Adjustable, lockable devices

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. Numero...

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Bibliographic Details
Main Author THORN; RICHARD P
Format Patent
LanguageEnglish
Published 24.02.1998
Edition6
Subjects
BEDS
BLASTING
CHAIRS
COFFEE MILLS
DOMESTIC ARTICLES OR APPLIANCES
ENGINEERING ELEMENTS AND UNITS
FURNITURE
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HUMAN NECESSITIES
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SOFAS
SPICE MILLS
SPRINGS
SUCTION CLEANERS IN GENERAL
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary: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.
Bibliography:Application Number: US19950424925