Chain Tensioner and improved plunger retention thereof

Details Chain Tensioner and improved plunger retention thereof Chain Tensioner and improved plunger retention thereof

1997-12-23

1999-06-15

Jeffery, John A.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Load responsive tension adjuster or shifter

474111, 474140, F16H 708, F16H 722, F16H 718

Patent

active

059116412

ABSTRACT:
A chain tensioner (19) having a housing (23) and a plunger (29), in which the housing includes a mounting surface (39) to be in face-to-face relationship with a wall surface (35) of the engine block (E). The tensioner includes a retainer member (43;81) having a retaining portion (55;85) and a wall-engaging portion (41;87). Before assembly, the retaining portion (55;85) engages a shoulder (65) on the plunger (29) to keep it within its bore (25) When the housing (23) of the tensioner is bolted to the engine block (E), the wall-engaging portion (41;87) engages the wall surface (35), and tightening of the bolts gradually moves the retaining portion (55;85) to a position in which it no longer engages the plunger (29), thus permitting the plunger to move outward of its bore.

REFERENCES:
patent: 4826470 (1989-05-01), Breon et al.
patent: 5006095 (1991-04-01), Suzuki
patent: 5088966 (1992-02-01), Suzuki et al.
patent: 5304099 (1994-04-01), Deppe et al.
patent: 5720684 (1998-02-01), Mott
patent: 5730674 (1998-03-01), Ott

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