Brakes – Internal-resistance motion retarder – With means for locking parts together temporarily
Patent
1987-09-24
1989-05-09
Kashnikow, Andres
Brakes
Internal-resistance motion retarder
With means for locking parts together temporarily
248161, 267 6412, 267131, 267226, F16F 932
Patent
active
048280801
ABSTRACT:
The adjusting mechanism is used for exerting a force on two components moveable relative to one another and comprises a cylinder, a piston and a piston rod. A guide rod is also provided on the piston and is guided in a guide connection of a bottom cylinder casting. A control piston is displaceably guided in a longitudinal bore of the piston and in a further longitudinal bore of the guide rod. The piston contains transfer ducts, which are either obturated by the control piston or are freed or exposed by a smaller diameter portion of the control piston. An inner cylinder chamber is completely filled with a flowable or fluid grease. As a result, the piston rod can be locked in position by the control piston closing the transfer ducts and, on releasing or opening the latter, the piston rod can be moved. The locking of the adjusting mechanism in a specific position, as is particularly required in the case of tiltable chairs, is consequently facilitated in comparison to known adjusting mechanisms. In addition, by using flowable grease, the sealing of the adjusting mechanism is made simpler.
REFERENCES:
patent: 2453855 (1948-11-01), Oliver
patent: 3177980 (1965-04-01), Porter
patent: 3236515 (1966-02-01), Ackerman
Giroflex Entwicklungs AG
Graham Matthew C.
Kashnikow Andres
Kleeman Werner W.
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