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:
Jul. 28, 1987
Filed:
Dec. 01, 1986
Graham V Kipling, Agincourt, CA;
Diesel Equipment Limited, Toronto, CA;
Abstract
A modulator valve has a modulator member which is slidably mounted in a cylinder and through which an air flow passage extends. A valve member is slidably mounted in the air flow passage and is operable to open and close the through passage. By providing a resilient actuator for displacing the modulator member in a first direction and a stop for arresting the movement of the flow control valve while permitting movement of the modulator valve it is possible to provide for modulated opening and closing of the control valve by balancing the pressure applied by the resilient actuator against the air pressure applied to the modulator member downstream of the through passage.