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:
Jun. 20, 2000
Filed:
Sep. 17, 1998
Gregory E Costley, Lacon, IL (US);
Thomas S Lane, Metamora, IL (US);
Larry R Mitzelfelt, Jr, Metamora, IL (US);
Jeffrey R Ries, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A two speed governor for an internal combustion engine includes a flyweight assembly rotatably mounted in a housing. The riser is positioned in the housing and operably connected to the flyweight assembly. The riser is moveable between a retracted position, and intermediate position and an advanced position. A first spring is operably mounted in the housing to bias the riser toward its retracted position when the riser is located anywhere between its retracted position and its advanced position. A second spring is operably mounted in the housing to bias the riser toward its retracted position when the riser is between its intermediate and advanced positions. The second spring has a pre-load but is inoperable when the riser is between its retracted position and its intermediate position.