Machine element or mechanism – Gearing – Backlash take-up
Patent
1998-09-24
2000-02-01
Herrmann, Allan D.
Machine element or mechanism
Gearing
Backlash take-up
74402, 74498, F16H 5518, B62D 312
Patent
active
060190124
ABSTRACT:
An apparatus for use in turning steerable wheels of a vehicle includes a first gear (16) and a second gear (14). The first gear (16) is movable along an axis (24) to reduce clearance between meshing teeth (18 and 20) on the gears (14 and 16). A lash adjustment assembly (46) is operable to adjust the clearance between the teeth (18 and 20) of the gears (14 and 16). The lash adjustment assembly (46) includes a threaded member (60). An external thread convolution (66) on a shank portion (64) of the threaded member (60) engages an internal thread convolution (68) on the first gear (16). A spring (72) has a plurality of turns (78) which are coiled around the shank portion (64) of the threaded member (60). One end portion of the spring (72) is connected to the shank portion (64) of the externally threaded force member (60). The opposite end portion (74) of the spring (72) is movable between an active condition in which it is effective to transmit force to a housing (30) and an inactive condition in which it is effective to transmit force to the threaded member (60).
REFERENCES:
patent: 2984121 (1961-05-01), Folkerts
patent: 3252348 (1966-05-01), Folkerts
patent: 3600965 (1971-08-01), Folkerts
patent: 3884091 (1975-05-01), Hay
patent: 5392666 (1995-02-01), Lin
patent: 5906133 (1999-05-01), Gilbert
Co-pending U.S. Pat. appln. Ser. No. 08/905,172, filed Aug. 1, 1997, entitled "Lash Adjustment Assembly".
Herrmann Allan D.
TRW Inc.
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