Gear mechanism for brake adjustment

Details Gear mechanism for brake adjustment Gear mechanism for brake adjustment

1985-01-14

1987-02-24

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74439, 74458, 74522, 188 795K, 188196M, F16D 6548, F16H 116

Patent

active

046448128

ABSTRACT:
Adjusting mechanism is provided for the brakes of a highway trailer. A brake lever is actuated by a pneumatic cylinder and carries a worm gear which is mounted for turning with the lever, and also independently of the lever. The worm gear is splined for non-rotatable reception of a brake shaft. A saddle pinned to the lever carries a tapered worm which meshes with the worm gear. The worm gear is axially split, and the two halves thereof are forced axially away from one another by the worm under load into engagement with surfaces fixed relative to the lever for frictionally fixing said gear relative to said lever. The tapered worm also wedges the periphery of the gear into frictional engagement with a surrounding part of the lever. The worm is turnable to adjust the rotational position of the gear and hence of the brake shaft when not under load, and the worm is lockable in adjusted position.

REFERENCES:
patent: 2173660 (1939-09-01), Perkins
patent: 3398590 (1968-08-01), Campbell et al.
patent: 3901357 (1975-08-01), Reitz et al.
patent: 4057128 (1977-11-01), Coupland
patent: 4121703 (1978-10-01), Moss
patent: 4310087 (1982-01-01), Gawler
patent: 4380276 (1983-04-01), Sweet et al.
patent: 4484665 (1984-11-01), Svensson
patent: 4499978 (1985-02-01), Norcross
patent: 4561523 (1985-12-01), Ott

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