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:
Sep. 07, 1999
Filed:
May. 20, 1997
Applicant:
Inventor:
George Nicholas Felton, Kent, GB;
Assignee:
Lucas Industries, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417462 ; 417440 ; 123450 ; 123506 ;
Abstract
A fuel pump is disclosed which comprises a plunger reciprocable under the influence of a cam surface. The cam surface is shaped to include a first region and a second region. As the plunger moves under the influence of the first region, a pressure wave is generated which is able to reach a spill valve prior to the plunger moving under the influence of the second region to generate a pressure sufficient to open a delivery valve.