The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 1997
Filed:
Feb. 26, 1996
Nabco Ltd., Wilmerding, PA (US);
Abstract
A brake device equipped with an actuator having a power-transmission member generating a pushing force by receiving a drive force so as to advance. A pressure-detection device is provided for detecting the reaction pressure being applied to the power-transmission member and a clearance controller is provided for making the power-transmission member perform a return stroke. A brake shoe is attached to the power-transmission member and generates a braking force on the wheel tread surface. Such clearance controller is provided with a stroke memory unit which detects when the pressure signal from the pressure-detection device has reached a reference value when the pushing force of the power-transmission member is output and memorizes the stroke position of the power-transmission member as the reference stroke position. A computational processor determines the return stroke position by which the power-transmission member is separated from the wheel tread surface and the clearance stroke fraction established in advance using the reference stroke position, when the pushing force is released.