ELECTRIC DRUM OR DRUM-IN-HAT PARK BRAKE
First Claim
1. A linear actuation assembly comprising:
- a. a differential assembly andb. a pair of linear actuators in communication with the differential assembly;
wherein the pair of linear actuators are movable along an axis so that during movement of at least a portion of each of the pair of linear actuators a pair of brake shoes respectively are moved to create a brake force or moved to release a brake force, andwherein the differential assembly distributes power equally to each of the pair of linear actuators until resistance of one of the pair of brake shoes increases then the differential assembly ceases to provide power to a brake shoe with increased resistance and distributes the power from the brake shoe with increased resistance to a brake shoe of lower resistance until a brake force is created.
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Accused Products
Abstract
A linear actuation assembly comprising: (a) a differential assembly and (b) a pair of linear actuators in communication with the differential assembly; wherein the pair of linear actuators are movable along an axis so that during movement of each of the pair of linear actuators a pair of brake shoes are moved to create a brake force or moved to release a brake force, and wherein the differential assembly distributes power equally to each of the pair of linear actuators until resistance of one of the brake shoes increases then the differential assembly ceases to provide power to the brake shoe with increased resistance and distributes the power from the brake shoe with increased resistance to a brake shoe of lower resistance until a brake force is created.
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Citations
20 Claims
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1. A linear actuation assembly comprising:
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a. a differential assembly and b. a pair of linear actuators in communication with the differential assembly; wherein the pair of linear actuators are movable along an axis so that during movement of at least a portion of each of the pair of linear actuators a pair of brake shoes respectively are moved to create a brake force or moved to release a brake force, and wherein the differential assembly distributes power equally to each of the pair of linear actuators until resistance of one of the pair of brake shoes increases then the differential assembly ceases to provide power to a brake shoe with increased resistance and distributes the power from the brake shoe with increased resistance to a brake shoe of lower resistance until a brake force is created. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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3. The linear actuation assembly of claim ,wherein one of the pair of linear actuators is located on a first side of the differential assembly and one of the pair of linear actuators is located on a second side of the differential assembly.
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15. A brake assembly comprising:
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a. a pair of spaced apart brake shoes each including a first end and a second end and b. a linear actuator assembly located between the first end of the pair of spaced apart brake shoes, the linear actuator comprising; i. a motor, ii. a differential assembly in communication with the motor, and iii. a pair of spaced apart linear actuators in communication with the differential assembly and each of the pair of spaced apart linear actuators in communication with a first end of one of the pair of spaced apart brake shoes; wherein the motor supplies power to the differential assembly and the differential assembly distributes the power to each of the linear actuators and the linear actuators move the brake shoes equally until one of the brake shoes experience a higher resistance and then the differential assembly shifts power and supplies additional power to the brake shoe with a lower resistance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification