Composite door lock plunger
AssigneeTrimark Corporation
InventorBarbara J. Pickar
Life of this patent
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Abstract
An approved plunger assembly is provided for a door handle. The plunger assembly includes a metallic plunger and a plastic link, which are connected so as to slide together between extended and retracted positions. The plastic link minimizes friction between the plunger assembly and the housing of the door handle, and minimizes wear between the link and the pivot plate which moves the plunger assembly from the extended position to the retracted position. The metallic plunger provides increased wear-resistance from contact with the striker plate or frame which surrounds the door in which the door handle is mounted.
Claims10
A plunger assembly for a door handle, comprising:
- a plunger made from wear-resistant material having a first coefficient of friction;
- a plunger tunnel for housing the plunger, the tunnel supporting movement of the plunger;
- and
- a link made from material having a second coefficient of friction, the second coefficient of friction being lower than the first coefficient of friction;
- the plunger and link being connected so as to move together between extended and retracted positions relative to the tunnel.
Dependencies are inferred from the claim text.