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:
Nov. 15, 1977
Filed:
Feb. 23, 1976
Boleslaw M Klimek, Des Plaines, IL (US);
The Echlin Manufacturing Company, Branford, CT (US);
Abstract
A valve for controlling the operation of spring brake chambers in spring brake actuators used in tractor-trailer combinations. The valve is adapted for use with two spring brake actuators and two sources of supply pressure and includes an integral check valve for permitting fluid to flow from either source into the valve but from neither source into the other source. The valve further includes apparatus for alternately providing communication between output port(s) to the spring brake actuators and the check valve or an exhaust port.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile