US 4,400,600 AGranted

Gas spring arrangement operating as an electrical connection

AssigneeStabilus GmbH

InventorsHerbert Freitag, Klaus Schnitzius

Life of this patent

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Abstract

A gas spring arrangement in which conductive terminals on the cylinder and piston rod of a gas spring are connected by a conductive path insulated from the cylinder and piston rod. The path may be provided in part by contact elements on the cylinder and piston rod outside the cylinder cavity which engage each other when the piston rod approaches its axially terminal position during inward movement into the cavity. The path may also be provided in part by an insulated conductor helically wound on the piston rod in the cavity or outside. It may also include an axially elongated conductor secured to the axial cylinder wall outside the cavity.

Claims16

Dependent claims

A gas spring arrangement comprising:

(a) a cylinder member having an axis and being formed with a cavity, said cylinder member including an annular end wall transverse to said axis;
(b) a body of gas under superatmospheric pressure in said cavity;
(c) a piston rod member axially movable inward and outward of said cavity in sealing engagement with said end wall between two terminal positions;
(d) fastening means on respective axially terminal portions of said cylinder and piston rod members outside said cavity for fastening said members to respective objects;
(e) a first, electrically conductive terminal on said cylinder member outside said cavity;
(f) a second, electrically conductive terminal on said piston rod member outside said cavity;
(g) conductive means connecting said first and second electrically conductive terminals during at least a portion of the movement of said piston rod member between said two terminal positions, said conductive means extending substantially the entire length of said cylinder and piston rod members and including a portion of an elongated, flexible conductor which is axially deformed during said movement of the piston rod member;
and
(h) insulating means electrically insulating said conductive means from said cylinder and piston rod members.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/200,059Filed 23 Oct 1980 · division
Priority: DE 274837628 Oct 1977
Granted: 23 Aug 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F16F 9/029
Details: electrical, e.g. connections or contacts
H01R 4/64
Characterised by the form or material of the contacting members: connections between or with conductive parts having primarily a non-electric…
F16F
Springs
H01R
Electrically-conductive connections

Family

Serial952,092Parent of this division · filed 17 Oct 1978
US 4,316,098 AParent of this division
US 4,400,600 AThis patent

From the US filing history. Foreign family members aren’t listed.

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