Pneumatic springs and other telescopic systems

Details Pneumatic springs and other telescopic systems Pneumatic springs and other telescopic systems

1978-01-31

1979-08-07

Scott, James R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 6162, 188 1A, H01H 316, G08B 2100

Patent

active

041639707

ABSTRACT:
A telescopic system formed of a relatively slidable plunger rod and cylinder is operated as a pneumatic spring equipped with an end-stroke electrically-actuated indicator. The plunger rod is fitted with a damping piston which is slidably mounted thereon between two stops secured thereto and used as valve members for partially obturating a groove formed on the piston face and communicating with an axial passage through the piston. The cylinder bottom and the slidable piston constitute the two associated contacts of an electric switch and are respectively connected to the terminals of an electric circuit energizing an indicator.

REFERENCES:
patent: 3919509 (1975-11-01), Schnitzius

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