Brake shoe adjuster

Details Brake shoe adjuster Brake shoe adjuster

1985-04-15

1986-11-04

Reger, Duane A.

Brakes

Position adjusters

Slack

188 795K, F16D 6556

Patent

active

046206183

ABSTRACT:
Disclosed is an automatic slack adjuster (50) for maintaining a substantially constant clearance (C) between a braking member and a rotatable braking surface in a brake released condition between a braking member (8) having a frictional layer (1) and a rotatable braking surface (12) of the type including an elongate power screw (2) having threads (4) threadingly engaged with threads of a rotatable nut member (6). Clearance (C) is maintained upon application of the brake by an operator by means of an adjustment member (16) that is preferably in splined engaged relationship with nut member (18) and causes nut member (6) to rotate and advance braking member (8) in a clearance correcting direction upon application of the brake of an operator by means of a drive train driven by power screw (2) preferably comprising a first drive means (20) integral with power screw (2), rack means (22), second drive means (24) and third drive means (34) operably engaged with adjustment member (16). Adjuster (50) is further provided with clutch means (26) adapted to stop upon engagement between frictional liner (10) and braking surface (12) and rotational directional control means preferably in the form of one-way ratchet assembly (38) adapted to prevent nut member (6) from backing off upon release of the brake by the operator.

REFERENCES:
patent: 3351163 (1967-11-01), Sander et al.
patent: 3392810 (1968-07-01), Svensson
patent: 4440268 (1984-04-01), Karlsson

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