초록 ▼

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 ar

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.

대표청구항 ▼

In a pneumatic spring-type electrical connector including a cylinder member having an axis and bounding a sealed cavity therein, a piston rod member secured to said cylinder member for axial movement inward and outward of said cavity, respective fastening elements on said members outside said cavity

In a pneumatic spring-type electrical connector including a cylinder member having an axis and bounding a sealed cavity therein, a piston rod member secured to said cylinder member for axial movement inward and outward of said cavity, respective fastening elements on said members outside said cavity, respective terminals on said members outside said cavity, said cylinder member having an axially elongated face portion of electrically conductive material in said cavity, said face portion carrying a film of non-conductive lubricant, a compressed gas in said cavity biasing said piston rod member outward of said cavity, and current carrier means permitting flow of electric current between said terminals, the improvement in said current carrier means which comprises: (a) a conductive contact element fixed on said piston rod member and having at least one contact face; (b) resilient means biasing said at least one contact face into sliding engagement with said axially elongated face portion during said movement of the piston rod member with a force sufficient for breaking said lubricant film; and (c) conductive means connecting said face portion and said contact face to said terminals respectively.