Electrically conductive pneumatic spring

Details Electrically conductive pneumatic spring Electrically conductive pneumatic spring

1979-06-21

1981-08-04

Scott, James R.

Geometrical instruments

200 6162, H01R 4100, H01H 300, T16F 902, B60Q 180 4

Patent

active

042818842

ABSTRACT:
In the illustrative embodiment of a current-carrying pneumatic spring disclosed, flow of electric current between external terminals on the cylinder member and piston rod member of the spring is provided by a contact element fixed on one of the members and carrying one or more contact faces which are resiliently biased into sliding engagement with an axially elongated face portion of the other member. Flow of electric current between the external terminals may thereby be provided over a range of positions or over all positions of axial movement of the piston rod member inward and outward of the cylinder cavity.

REFERENCES:
patent: 2247843 (1941-07-01), Kamenarovic
patent: 2881403 (1959-04-01), Vltavsky
patent: 3812312 (1974-05-01), Andersen et al.
patent: 3844247 (1974-10-01), Collis et al.
patent: 3919509 (1975-11-01), Schnitzius
patent: 4030716 (1977-06-01), Freitag
patent: 4089512 (1978-05-01), Allinquant

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