Adjustable, lockable devices

Details Adjustable, lockable devices Adjustable, lockable devices

1995-04-19

1998-02-24

Poon, Peter M.

Brakes

Internal-resistance motion retarder

With means for locking parts together temporarily

267202, F16F 932

Patent

active

057203695

ABSTRACT:
An adjustable length strut having a unique locking device. An annular spring within a housing surrounds an actuator rod. An actuator member engages one end of the annular spring axially compressing it and causing radial bulging resulting in locking the rod in position relative to the housing. Numerous embodiments are disclosed which may replace gas springs in such applications as seat height adjusters, chair arm adjusters and seatback adjusters. An embodiment is disclosed employing a switch to activate and deactivate the actuator member.

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