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. 20, 1984
Filed:
May. 10, 1982
Larry E Monigold, Cadillac, MI (US);
Ordale Lewis, Cadillac, MI (US);
Kysor Industrial Corporation, Cadillac, MI (US);
Abstract
A mechanical engine protection system includes a temperature responsive valve, a pressure sensing valve and a mechanical shutdown actuator. The valves and actuator are fluidly interconnected so that the actuator is shifted from a run position to a shutdown position upon the occurrence of a high engine operating temperature condition or a low oil pressure condition. The temperature responsive valve includes an inlet port, an outlet port and a drain port. A valve element is positioned by a thermally responsive unit or motor to selectively interconnect the outlet port with either the inlet port or the drain port. The pressure sensing valve includes an inlet port, an outlet port, a drain port and a pilot port. A diaphragm motor positions a valve element in response to the pressure signal applied to the control port to selectively interconnect the outlet port with the inlet port or the drain port. The shutdown actuator includes an inlet port, an actuator rod and a spring loaded diaphragm motor.