Rachet tensioner

Details Rachet tensioner Rachet tensioner

1998-07-30

2000-05-09

Bucci, David A.

Endless belt power transmission systems or components

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

Tension adjuster or shifter driven by electrical or fluid motor

474101, F16H 708

Patent

active

060596783

ABSTRACT:
A ratchet tensioner comprising a ratchet (1) having a first ratchet prong (6) engageable with one of ratchet teeth (T) at a position displaced from the axis (O) of a ratchet shaft (3) toward the free end of a plunger (5), and a second ratchet prong (7) receivable between two adjacent ones of the ratchet teeth (T) at a position located on a line (N) extending through the axis (O) of the ratchet shaft (3) perpendicular to an axis of the plunger (5) when the first ratchet prong (6) is in mesh with the one ratchet tooth (T). A projecting length (S2) of the second prong (7), which is measured from the axis (O) of the ratchet shaft (3) to the top of the second ratchet prong (7) in a direction parallel to the perpendicular line (N), is made smaller than a corresponding projecting length (S1) of the first ratchet prong (6) at least by an amount equal to the given manufacturing tolerance in the production of the ratchet.

REFERENCES:
patent: 4822320 (1989-04-01), Suzuki
patent: 4874352 (1989-10-01), Suzuki
patent: 4881927 (1989-11-01), Suzuki
patent: 5006095 (1991-04-01), Suzuki
patent: 5030169 (1991-07-01), Kiso et al.
patent: 5913742 (1999-06-01), Nakamura et al.

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