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:
Mar. 21, 1989
Filed:
Dec. 15, 1987
John A Urban, Plainwell, MI (US);
Lucas Industries Public Limited Company, Birmingham, GB;
Abstract
A drum-type brake and actuating system therefor comprised of a camshaft, cam and actuator mechanism that are contained within an actuator housing and a tubular shaft which journals the camshaft. A lubricant fitting permits lubricant to be introduced into both the tubular member and the actuator housing. In addition, an automatic adjuster is contained within an adjuster housing which communicates with the actuator housing and a pressure responsive valve that permits lubricant introduced through a grease fitting to be discharged from the adjuster housing. An expandable member is contained within the actuator housing for compensating for effective volume variations and precluding the exhaust of lubicant and the introduction of air during such changes.