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US 4,398,623 AGranted
Internal shoe drum brake adjusting device
AssigneeAutomotive Products plc
InventorDuncan W. Osborne
Life of this patent
Estimating the term…
Abstract
An internal shoe drum brake automatic adjuster comprising a strut extending between one brake shoe and a wedge mounted between the strut and an abutment on the other brake shoe. The wedge is spring loaded to increase the spacing between the adjacent end of the strut and the abutment. The abutment is pivoted to the shoe and spring loaded against the wedge to maintain a clearance `S` between the abutment and a stop secured to the shoe.
Claims6
An internal shoe drum brake having an automatic adjuster and comprising;
- two brake shoes;
- a strut extending from one of said brake shoes towards the other of said brake shoes;
- an abutment means pivoted to said other brake shoe and having a free end thereof capable of limited movement relative to said other brake shoe;
- a stop means on said other brake shoe and which has a lost-motion connection with the free end of the abutment means so as to limit the movement of the free end;
- a wedge mounted on said other brake shoe and located between the free end of the abutment means and the strut;
- a spring biasing the wedge to increase the spacing between the free end of the abutment means and the strut;
- and a second spring loading the free end of the abutment means against the wedge.
4 more elements
Dependencies are inferred from the claim text.