Patent ID: 9476469
Filing Date: 2016-10-25
CPC Classification: F16D

Claim Text:
1. 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 at least a portion of each of the pair of linear actuators a pair of brake shoes respectively are moved to create a parking brake force or moved to release a parking brake force, wherein when a parking brake is applied, 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 the parking brake force is created, wherein the differential assembly is located between the pair of brake shoes, wherein the differential assembly is connected to a motor and the motor provides the power to the differential assembly and the differential assembly transfers power to the pair of linear actuators, and wherein the motor drives a worm gear and the worm gear transfers the power to a ring gear of the differential assembly.