Brakes – Wheel – Transversely movable
Patent
1980-09-19
1982-10-12
Butler, Douglas C.
Brakes
Wheel
Transversely movable
188331, 188341, F16D 5120
Patent
active
043534414
ABSTRACT:
In a drum brake assembly a pair of brake shoes (12, 14) are carried by a backing plate (10) and are engageable with the brake drum (18) to effect a service brake application. A parking lever (26) cooperates with the pair of brake shoes to engage the shoes with the brake drum and effect a parking brake application. A connector (34, 84, 94, 96) is slidably carried by the backing plate and pivotally anchors at least one of the brake shoes to the backing plate. The connector (34, 84) or another structure (128) transmits braking torque from one brake shoe to the other only during a parking brake application. The connector is releasably secured to the backing plate in a fixed position by a latch (36, 88, 114) which is connected to the parking lever. Movement of the parking lever to a position effecting a parking brake application causes the latch to release the connector for sliding movement relative to the backing plate. When a service brake application is effected, the connector remains fixed to the backing plate and the brake functions as a non-servo drum brake. When the parking brake is operated, the connector is released by the latch and is movable in the direction of brake drum rotation. Consequently, the brake functions as a servo drum brake during parking brake applications.
REFERENCES:
patent: 2775315 (1956-12-01), Maruhn et al.
patent: 2989150 (1961-06-01), Compton
patent: 3951243 (1976-04-01), Chouings
patent: 4249646 (1981-02-01), Roberts
Butler Douglas C.
Decker Ken C.
Schoenle Paul David
The Bendix Corporation
LandOfFree
Dual mode drum brake does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual mode drum brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual mode drum brake will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-219806