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:
Aug. 11, 1981
Filed:
Mar. 02, 1979
Harold C Davidson, Chillicothe, IL (US);
John H Parks, Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
PCT No. PCT/US79/00128 Sec. 371 Date Mar. 2, 1979 Sec. 102(e) Date Mar. 2, 1979 PCT Filed Mar. 2, 1979 PCT Pub. No. WO80/01821 PCT Pub. Date Sept. 4, 1980 A system for shutting-down an engine upon overspeeding thereof comprises an engine-driven shaft (19) having a flyweight mechanism (27) connected thereto and engageable with a reciprocally mounted trip shaft (32). The trip shaft (32) is, in turn, engageable with a pivotal latch (33) which is adapted to normally hold a spring-loaded control piston (44) in an inactive first position for permitting normal engine operation. A cable (12) connects the control piston (44) to a flapper valve (11), pivotally mounted in the intake manifold (13) of an engine. The manifold (13) is adapted to be closed upon tripping of the latch (33) to disengage the control piston (44) to permit its movement to an activated second position when the engine speed exceeds a predetermined maximum speed. Closing of the flapper valve (11) will create a vacuum in the intake manifold (13) which, in turn, opens a vacuum valve (14) mounted thereon to responsively move a rack (16) of a fuel control system (17) to a closed position to prevent communication of fuel to the engine.