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:
May. 04, 1982
Filed:
Nov. 01, 1979
Ralph B Henson, Creve Coeur, IL (US);
James L Martin, Chillicothe, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
In fuel injectors of the type which include a rotating plunger (12) having a double helix, or 'double scroll', control edges (62, 64), a control edge configuration is disclosed which improves the starting characteristics of certain internal combustion engines. A starting groove (76) and a starting projection (78) are provided in the control edges (62, 64) which simultaneously greatly increase the amount of fuel injected into the combustion space and retard engine timing. Also provided is a control mechanism (92-96) which prevents the injectors from accidently or intentionally rotating to the start position when the engine is running.