Abrégé

A valve controller includes a housing (118) defining an interior volume, and a transmission assembly (110) at least partially disposed in the interior volume of the housing. The transmission assembly includes a shaft coupled to a cam sub-assembly, which includes a first side and a second side opposite the first side, a first cam, and a second cam coupled to the first cam. Each of the first and second cams includes a bore arranged to receive the shaft and a lobe. The lobe of the first cam and the lobe of the second cam being at least partially coplanar. A first switch (130) and a second switch (134) are disposed in the interior volume of the housing and adjacent to the transmission assembly. The lobe of the first cam is arranged to activate the first switch and the lobe of the second cam is arranged to activate the second switch.

Classes IPC  ?

• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme

Abrégé

A magnet reed switch assembly. The magnetic reed switch assembly includes a reed switch having a body and a pair of electrical contacts disposed in the body. A ring magnet has a bore, and a portion of the body of the reed switch is disposed within the bore, with the ring magnet positioned close to the pair of electrical contacts. The ring magnet is movable along the axis of the body between a first position and a second position. A plunger includes a proximal end coupled to the ring magnet and a distal end having a sensing magnet. When a ferrous target is disposed near the sensing magnet, the plunger moves toward the ferrous target causing the ring magnet to move from the first position to the second position, and the reed switch to move from an open state to a closed state.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

A target magnet mechanism for a proximity switch. The target magnet mechanism includes a plurality of magnets disposed in an alternating magnetic pole configuration forming a narrowed, polarity reversing magnetic field. A center magnet has a magnetic polarity opposite the magnetic polarity of a sensing magnet of the proximity switch. A flanking magnet includes a magnetic polarity opposite the magnetic polarity of the center magnet and the same as the sensing magnet. So configured, the plurality of magnets trigger the proximity switch to an activated state by pulling on a magnetic field of the proximity switch via the opposed polarity of the center magnet and the sensing magnet. In addition, the plurality of magnets release the proximity switch back to an unactivated state by pushing on the magnetic field of the proximity switch via the same polarity of the flanking magnet and the sensing magnet.

Classes IPC  ?

• H03K 17/95 - Commutateurs de proximité utilisant un détecteur magnétique
• H03K 17/97 - Commutateurs actionnés par le déplacement d'un élément incorporé dans ce commutateur utilisant un élément mobile magnétique

Abrégé

A switch adapter can include a base having one or more openings, a support coupled to the base, and one or more retainers for coupling a switch to the adapter. The support can have one or more openings between its interior and exterior. The retainer can be adapted to couple to at least one of the base, the support, and a combination thereof. The switch adapter can include one or more switches, such as a replacement switch, and can be adapted for replacing a limit switch with a proximity switch. A proximity switch can be coupled to a switch adapter in one or more positions, and a switch adapter can be adapted to couple with a plurality of different switch mounts. A switch adapter can include a mass compensator for adjusting its center of gravity.

Classes IPC  ?

• H01H 3/16 - Organes moteurs, c. à d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur adaptés pour être actionnés dans une position limite ou autre position prédéterminée dans le trajet d'un corps, le mouvement relatif de l'interrupteur et du corps ayant principalement un autre but que d'actionner l'interrupteur, p.ex. un interrupteur
• H01H 9/02 - Supports, enveloppes ou capots
• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

Actuation apparatus for use with magnetically-triggered proximity switches are described herein. An example apparatus includes an actuator shaft (116) having a first segment (168) and a second segment (170), the first segment intersecting the second segment. The first segment (168) defines a first end (172) of the actuator shaft, and the second segment (170) defines a second end (174) of the actuator shaft opposite the first end. The second segment further defines a slot (178). The apparatus further includes a detector magnet assembly (120) coupled to the first segment (168) of the actuator shaft (116) adjacent the first end (172). The apparatus further includes a switch arm (114) coupled to the second segment 170 of the actuator shaft (116). The switch arm (114) includes a first end, a second end opposite the first end, and a portion located between the first and second ends of the switch arm. The portion of the switch arm (114) is positioned in the (slot (178) of the actuator shaft.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

A target detection assembly includes a detection member adapted to generate a first input signal, and an emulator module is removably secured to the detection member. The emulator module includes an emulator housing assembly removably secured to the detection member and a selection portion is disposed on the emulator housing assembly. The selection portion is configured to be oriented in a first and second selection mode. In the first selection mode, a first emulation circuit disposed within the emulator housing assembly receives the first input signal, processes the first input signal, and outputs a first output signal that is different than the first input signal. In the second selection mode, a second emulation circuit disposed within the emulator housing assembly receives the first input signal, processes the first input signal, and outputs a second output signal that is different than the first input signal and the first output signal.

Classes IPC  ?

• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
• H01R 29/00 - Pièces de couplage pour coopération sélective avec une pièce complémentaire de différentes façons pour établir différents circuits, p.ex. pour la sélection de tension, pour la sélection série-parallèle

Abrégé

A discontinuous shaft assembly includes a first shaft arranged for rotation about a first axis and including an end arranged for placement adjacent the wall at a first desired location disposed on a first side of the wall, with a magnetic portion carried by the first shaft. The assembly also includes a second shaft arranged for rotation about a second axis and including an end arranged for placement adjacent the wall of the enclosure at a second desired location disposed on a second side of the wall, with a magnetic portion carried by the second shaft. The first magnetic portion is arranged to cooperate with the second magnetic portion so that rotation of the first shaft about the first axis causes rotation of the second shaft about the second axis.

Classes IPC  ?

• H02K 7/00 - Dispositions pour la mise en œuvre d'énergie mécanique associées structurellement aux machines dynamo-électriques, p.ex. association structurelle avec des moteurs mécaniques d'entraînement ou des machines dynamo-électriques auxiliaires
• F16D 27/02 - Embrayages actionnés magnétiquement; Leur commande ou leurs circuits électriques à électro-aimants incorporés dans l'embrayage, c. à d. avec des bagues collectrices

Abrégé

A valve controller assembly (10) includes a first switch (12A) that generates a first input signal (14) based on an operational parameter of a control valve (16), and a docking assembly (20) is communicatively coupled to the first switch (12A). A switching module (22) is removably secured to and communicatively coupled to the docking assembly (20) such that the first switch (12A) is communicatively coupled to the switching module (22) when the switching module (22) is secured to the docking member. The switching module (22) includes a first emulation circuit (24) adapted to receive the first input signal (14), process the first input signal (14), and output a first output signal (26) that is different than the first input signal (14).

Classes IPC  ?

• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
• F16K 31/04 - Moyens de fonctionnement; Dispositifs de retour à la position de repos magnétiques utilisant un moteur

Abrégé

A quick-disconnect connector assembly includes a housing having a bore that extends up to but not through a first end of the housing. The connector assembly also includes a proximity switch disposed within the bore, and the proximity switch includes a switch body, a first contact member, and a second contact member. A portion of each of the first and second contact members extends from the switch body towards a second end of the housing. In a first switch position, a contact of a displaceable switching assembly is in contact with the first contact member, and in a second switch position, the contact is in contact with the second contact member. The connector assembly also includes an external connection assembly including a first pin that is electrically coupled to the first contact member and a second pin that is electrically coupled to the second contact member.

Classes IPC  ?

• H01R 13/703 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé actionné par l'engagement ou le retrait des pièces de couplage
• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• F15B 15/28 - Moyens pour indiquer la position, p.ex. fin de course

Abrégé

A system and method for configuring a field device of a control system is provided. The system includes a mobile computing device for communicating with a wireless adapter coupled to the field device. The mobile computing device receives an application module via a wireless network communication module. The application module, when executed by a processor, configures the field device via a wireless direct communication module. The mobile computing device includes a user-friendly graphic display to provide and receive information associated with the configuration of the field device.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
• H04W 4/02 - Services utilisant des informations de localisation

Abrégé

A configurable process control device (10), which includes a field device(12), such as a valve position controller, that can be configured by a user to emulate any one of a plurality of different types of process control devices, is provided with an electronic display assembly (16). The electronic display assembly is operatively connected with a control circuit (18) that is arranged to respond to the specific configuration of the field device to cause the electronic display assembly to display information relevant to the specific type of control device the field device has been configured to emulate. The information may include safety certification information specific to each of the different types of process control devices that the field device can be configured to emulate.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques

Abrégé

Apparatus for fluid control device monitoring are disclosed. An example apparatus includes a body through which a shaft extends. The shaft is to be coupled to an actuator. An angular position of the shaft is based on a position of the actuator. The apparatus includes a target coupled to the shaft and a circuit including a user configurable switch and a proximity switch. The user configurable switch is configurable to a first state or a second state. When the user configurable switch is in the first state and the target is distant from the proximity switch, the circuit is to output a first signal. When the user configurable switch is in the second state and the target is distant from the proximity switch, the circuit is to output a second signal different than the first signal.

Classes IPC  ?

• H01H 19/06 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes
• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

Magnetic switches are disclosed herein. An example apparatus includes a mount 104 and a switch actuator assembly 102 coupled to the mount. The switch actuator assembly includes a body 106, a trigger 200, and a first magnet 204 oriented to be attracted to a second magnet 202. Movement of the body from a first position to a second position causes relative movement between the first magnet and the second magnet and relative movement between the trigger and a switch.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• H03K 17/97 - Commutateurs actionnés par le déplacement d'un élément incorporé dans ce commutateur utilisant un élément mobile magnétique

Abrégé

A magnetically-triggered proximity switch includes a cylindrical switch body and a bias member non-movably secured within the switch body. The proximity switch also includes first and second normally-closed contacts and first and second normally-open contacts. The proximity switch further includes a spherical contact magnet disposed within the switch body, with the contact magnet being movable relative to the bias member from a first switch position and a second switch position. In the first switch position, an attraction to the bias member maintains the contact magnet in contact with the first and second normally- closed contacts, thereby completing a circuit between the first and second normally-closed contacts. In the second switch position, an attraction to a movable target external to the switch body moves the contact magnet into contact with the first and second normally-open contacts, thereby completing a circuit between the first and second normally-open contacts.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

An enclosed proximity switch assembly includes a top enclosure and a bottom enclosure that are coupled to form an interior volume. A shaft protrusion upwardly extends from a top surface of the top enclosure, and an interior bore portion having an enclosed volume is defined within the shaft protrusion to form a portion of the interior volume. A first end of a vertical shaft is rotatably disposed within the interior bore portion such that the shaft rotates relative to the top and bottom enclosures. A samarium cobalt target magnet is coupled to the shaft, and the target magnet interacts with a samarium cobalt driver magnet within a proximity switch when the target magnet is rotated within a predetermined distance of a top portion of the proximity switch. The interaction causes a switch to move from a first state to a second state, or vice versa.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• H01H 19/06 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes

Abrégé

Proximity switches are disclosed that preferably are provided in a hermetically sealed unit that can be used in harsh environments and under significant pressures, such as underwater and in nuclear power facilities, without having any parts that would require replacement or periodic maintenance. The proximity switches are preferably switches actuated by physical movement of a contact in response to changing magnetic forces. The switches are preferably disposed in a body tube optionally including a hermetic seal assembly to seal an open end of the body tube and/or a ferrule that prevents electrical wires attached to the switch inside the body tube from being pulled away from the switch. Further, the switches preferably maintain a contact pressure between electrical contacts sufficient to withstand acceleration seismic testing of 10g with no contact discontinuity.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• H01H 9/04 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes

Abrégé

Proximity switches include a hermetically sealed unit that can be used in harsh environments and under significant pressures, such as underwater and in nuclear power facilities, without having any parts that would require replacement or periodic maintenance. The proximity switches are preferably switches actuated by physical movement of a contact in response to changing magnetic forces. The switches are preferably disposed in a body tube optionally including a hermetic seal assembly to seal an open end of the body tube and/or a ferrule that prevents electrical wires attached to the switch inside the body tube from being pulled away from the switch. Further, the switches preferably maintain a contact pressure between electrical contacts sufficient to withstand acceleration seismic testing of 10g with no contact discontinuity.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• H01H 9/04 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes

Abrégé

Wireless flow monitoring devices are described. A device to wirelessly monitor a flow of material is described that includes a housing having a first surface and a second surface opposite the first surface, the second surface having an aperture. A lever is secured within the housing to rotate about a pivot point in response to the flow of material, where a portion of a first arm of lever is formed from a paddle arm, where an end of the paddle arm extends out the aperture of the second surface of the housing, and where a paddle is affixed to the paddle arm to be positioned within the flow of material. The device includes a magnet that is actuated by a second arm of the lever to move an amount proportional to the first arm of the lever, a portion of the magnet extending beyond the first surface of the housing, and a wireless position monitor mounted to the first surface of the housing so that a motion path of the portion of the magnet extending beyond the first surface of the housing is disposed within a channel in the base of the wireless position monitor, where the channel serves as a sensor to detect movement of the magnet.

Classes IPC  ?

• G01F 1/28 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètre à force d'entraînement, p.ex. du type à palette ou à poussée
• G01F 15/06 - Dispositifs d'indication ou d'enregistrement
• H01H 35/40 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide actionnés par des dispositifs permettant l'écoulement continu d'un fluide, p.ex. un moulinet

Abrégé

Methods and apparatus to determine a position of a valve are disclosed. An example apparatus disclosed herein includes a rotary valve assembly and a visual indicator assembly coupled to the rotary valve assembly to indicate a position of a fluid control member of the rotary valve assembly. The visual indicator assembly includes a follower and a shell surrounding the follower. A position of the follower is to correspond to the position of the fluid control member. The example apparatus further includes an electronic position monitor coupled to the shell to determine valve position information based on the position of the follower.

Classes IPC  ?

• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme

Abrégé

A switch module used for position sensing may be operated in a number of modes for compatibility with a number of legacy position sensing products. A dry switch circuit can be configured to provide a direct output, emulating dry reed, high- side or low- side switched configurations. Alternatively, the dry switch circuit can be connected to an input of a NAMUR circuit to provide the known current output for that standard. In another configuration the dry switch can be selectively coupled to one of two NAMUR circuits allowing the switch module to provide a low-to-high current NAMUR output or a high-to- low current NAMUR output.

Classes IPC  ?

• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou
• F15B 15/28 - Moyens pour indiquer la position, p.ex. fin de course
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme

Abrégé

A safety station for use in a process plant includes one or more leverless limit switches to detect activation of one or more parts of the safety station. The safety station further includes a wireless transmitter coupled to the leverless limit switches to transmit signals associated with the safety station to a base station device, which is communicatively coupled to one or more control and/or monitoring devices.

Classes IPC  ?

• G05B 9/02 - Dispositions de sécurité électriques
• A61H 35/02 - Bains pour parties déterminées du corps, p.ex. douches pour la poitrine pour les yeux

Abrégé

Wireless monitoring systems for use with pressure safety devices are described. An example wireless monitoring system includes a field device and a wireless transceiver coupled to the field device to receive a signal generated by the field device. The wireless transceiver has a self-contained power module. A wireless interface is communicatively coupled to the wireless transceiver without an interposing intrinsically safe barrier panel. The wireless interface wirelessly receives the signal from the wireless transceiver.

Classes IPC  ?

• G05B 23/02 - Test ou contrôle électrique
• G08C 17/00 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil
• G05B 9/00 - Dispositions de sécurité

Abrégé

A valve signature diagnosis and leak testing device includes a spool valve operatively connected to a pilot valve, the pilot valve being configured to position the spool valve to one of an open position and a closed position. A blocker valve is fluidly connected to a control fluid outlet of the spool valve. An electrical module is operatively connected to the pilot valve, a supply of control fluid, and the blocker valve, the electrical module being capable of sending pulsed electrical signals to the pilot valve and the blocker valve to selectively position the spool valve and the blocker valve to an open or closed position.

Classes IPC  ?

• F15B 19/00 - Test des systèmes ou appareils de manœuvre utilisant la pression d'un fluide, dans la mesure où ils ne sont pas prévus ailleurs

Abrégé

An automatic speed searching device for a partial stroke test of a control valve includes a spool valve operatively connected to a pilot valve and a blocker valve. An electrical module is operatively connected to the pilot valve, a supply of control fluid, and the blocker valve. In an open position of the spool valve, a first control fluid inlet is fluidly connected to a first control fluid outlet, and in a closed position of the spool valve the first control fluid outlet is fluidly connected to a second control fluid outlet. A method of determining an optimum stroke speed includes iteratively powering a main and secondary solenoid in the electrical module and updating parameters to move a control element of the control valve until movement of the control element is within a desired range.

Classes IPC  ?

• F15B 19/00 - Test des systèmes ou appareils de manœuvre utilisant la pression d'un fluide, dans la mesure où ils ne sont pas prévus ailleurs

Abrégé

An enclosed proximity switch assembly includes a top enclosure and a bottom enclosure that are coupled to form an interior volume. A shaft protrusion upwardly extends from a top surface of the top enclosure, and an interior bore portion having an enclosed volume is defined within the shaft protrusion to form a portion of the interior volume. A first end of a vertical shaft is rotatably disposed within the interior bore portion such that the shaft rotates relative to the top and bottom enclosures. A samarium cobalt target magnet is coupled to the shaft, and the target magnet interacts with a samarium cobalt driver magnet within a proximity switch when the target magnet is rotated within a predetermined distance of a top portion of the proximity switch. The interaction causes a switch to move from a first state to a second state, or vice versa.

Classes IPC  ?

• H01H 19/18 - Organes moteurs, p.ex. bouton rotatif adaptés pour être actionnés dans une position limite ou autre position prédéterminée dans le trajet d'un corps, le mouvement relatif de l'interrupteur et du corps ayant principalement un autre but que d'actionner l'interrupteur, p.ex. interrupteur de
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• H01H 19/06 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes

Abrégé

A poppet valve assembly to control a pneumatic actuator may include a housing having a central bore. A first module may be disposed within the central bore, and the first module may have a first and second poppet valve. A second module may also be disposed within the central bore, and the second module may have a third and fourth poppet valve. A supply of pressurized fluid may be in fluid communication with a plurality of control valves such that pressurized fluid from the control valves opens and closes the poppet valves. The supply of pressurized fluid may also be in fluid communication with the first module and the second module such that the opening and closing of the poppet valves controls the position of the pneumatic actuator.

Classes IPC  ?

• F15B 11/00 - Systèmes de servomoteurs dépourvus d'asservissement
• F15B 13/042 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique actionnés par la pression du fluide

Abrégé

A magnetically-triggered proximity switch includes a cylindrical switch body and a first magnet non-movably secured within the switch body. The proximity switch also includes a pivoting cross arm. A second magnet may be movably disposed within the switch body, and the second magnet may be rigidly connected to the cross arm. When a magnetic target is not located within a specified range of the second magnet, the first magnet attracts the second magnet, thereby pivoting the cross arm into a first switch position and closing a first circuit. However, when the magnetic target is located within the specified range, the magnetic attraction between the target and the second magnet is greater than between the second magnet and the first magnet. The second magnet is displaced towards the target away from the first magnet, thereby pivoting the cross arm into a second switch position.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran

Abrégé

A magnetic target (22) is provided for use with a magnetic proximity switch. The magnetic target includes a cylindrical body tube (24) having an open end that partially defines a bore. A stationary magnet (28) is located within the bore opposite the open end, and a movable magnet (30) is disposed within the bore between the stationary magnet and the open end. An adjusting member (26) is received into the bore, and a contact surface of the adjusting member engages the movable magnet (30). When the adjusting member (26) is axially displaced, the contact surface causes a corresponding displacement of the movable magnet (30) relative to the stationary magnet (28), eventually causing the magnetic flux field of each magnet to expand in a radial direction away from the longitudinal axis of each magnet. The stationary magnet and the movable magnet may be either axially-magnetized samarium-cobalt magnets or axially- magnetized neodymium magnets.

Classes IPC  ?

• H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p.ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
• H01F 7/02 - Aimants permanents

Abrégé

A rotary actuator (100) comprises a housing (102), a shaft (104), at least one piston (106), and at least one closed-wound power spring coupled to the shaft. The housing defines a cavity. The shaft (104) is disposed supported within the cavity of the housing and adapted for rotational displacement between a first position and a second position. The at least one piston (106) is supported within the cavity of the housing and operatively coupled to the shaft. The piston is adapted for sliding displacement in association with rotational displacement of the shaft. The at least one closed- wound power spring (108) is disposed within the cavity of the housing and operatively coupled to the shaft (104). So configured, the closed-wound power spring biases the shaft and the at least one piston into a predetermined relationship.

Classes IPC  ?

• F15B 15/06 - Schéma mécanique de montage caractérisé par les moyens transformant le mouvement de l'élément entraîné par le fluide en mouvement de l'organe terminal qui est actionné pour la transformation mécanique d'un mouvement rectiligne en un mouvement non rectiligne