• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F16F - Springs; shock-absorbers; means for damping vibration
• F16F 13/20 - Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper characterised by comprising also a pneumatic spring

Patent holdings for IPC class F16F 13/20

Total number of patents in this class: 22

10-year publication summary

Principal owners for this class