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. 05, 1997
Filed:
Jul. 12, 1995
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In an automatic decompression device for an engine, having a decompression cam supported on a camshaft adjacent to a valve operating cam for movement between a biased valve opening position in which the decompression cam causes a cam surface to project beyond a base circle portion of the valve operating cam to bias open an exhaust valve or an intake valve in a compression stroke of the engine, and a retracted position in which the decompression cam retracts the cam surface inwardly of the base circle portion of the valve operating cam under centrifugal forces acting on the counterweight against spring forces of a spring when the engine operates at a relatively high rotational speed, to prevent oil from being trapped between the decompression cam and the camshaft and allow the decompression cam to operate smoothly to decompress the engine when the engine starts at low temperatures. A decompression cam includes a plurality of recesses defined at circumferentially spaced intervals on the inner circumferential surface of the decompression cam, the recesses define therebetween lands for limiting the range of movement of the decompression cam in a plane perpendicular to the axis of a camshaft.