公开(公告)号：US20140062178A1

公开(公告)日：2014-03-06

申请号：US14015065

申请日：2013-08-30

Applicant: Caterpillar Inc.

Inventor： Satchit Pradip Panse ,  Paul Watts ,  Jinglian Sun ,  Frank Arriaga ,  Mark Thompson

IPC: B60T7/20

CPC classification number: B60T7/20

Abstract: A method and system releases a spring parking brake of an anchored machine. A hydraulic fluid source is provided. A towing force is applied to the anchored machine, and the applied towing force is sensed by a sensor. The sensor sends a signal to a hydraulic fluid source control device. The hydraulic fluid source control device causes hydraulic fluid from the hydraulic fluid source to be supplied to the spring parking brake to release the spring parking brake.

Abstract translation: 一种方法和系统释放锚定机器的弹簧驻车制动器。 提供液压流体源。 拖曳力被施加到锚定机器上，施加的牵引力由传感器感测。 传感器向液压源控制装置发送信号。 液压流体源控制装置使来自液压流体源的液压流体被供给到弹簧驻车制动器以释放弹簧驻车制动器。

公开(公告)号：US20210340999A1

公开(公告)日：2021-11-04

申请号：US16864210

申请日：2020-05-01

Applicant: Caterpillar Inc.

Inventor： Ryan Robert Stoffel ,  John Michael Connelly ,  Beau Daniel Kuipers ,  Satchit Pradip Panse

IPC: F15B1/24 ,  E02F9/22

Abstract: An accumulator includes an accumulator housing defining a first end, a second end opposite to the first end, and a hollow chamber. The accumulator also includes a piston slidably disposed within the hollow chamber and adapted to displace between the first and second ends. The piston divides the hollow chamber into a gaseous chamber proximate to the first end of the accumulator housing and a hydraulic chamber proximate to the second end of the accumulator housing. Further, the piston defines a first side surface in communication with the gaseous chamber and a second side surface spaced apart from the first side surface. The second side surface is in communication with the hydraulic chamber. A cavity of the piston is in communication with the second side surface and extends from the second side surface towards the first side surface. The cavity is in fluid communication with the hydraulic chamber.