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US 4,291,416 AGranted
Chain tensioner
OwnerHerbert W. Hoeptner, IIIinventor
Life of this patent
Estimating the term…
Abstract
A chain tensioner comprises: a plunger yieldably urged and displaceable in one direction to transmit chain tensioning force to a chain, and a wedgable means co-acting with the plunger to block its retraction.
Claims12
A tensioning device for tensioning a chain, comprising
- (a) an axially elongated body means having a stem portion with a bore therein,
- (b) a plunger carried by the body means and movable axially relative thereto in the bore, and a first compression spring in the bore urging the plunger axially in a first direction to exert biasing force operable to tension said chain,
- (c) the body means having an interior ramp surface facing the plunger, the ramp tapering inwardly in a second direction which extends generally opposite said first direction,
- (d) wedgable means located between the ramp surface and the plunger, and urging means urging the wedgable means into wedging engagement with the ramp surface and the plunger whereby the plunger may be displaced by the first spring in said one direction but is blocked against displacement in said opposite direction,
- (e) and a holder defining a socket receiving said stem portion for locating said stem portion so that said plunger is urged in a chain tensioning direction by said first spring.
2 more elements
Dependencies are inferred from the claim text.