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. 03, 1991
Filed:
Oct. 15, 1990
Applicant:
Inventor:
Peter A Collingborn, Gilligham, GB;
Assignee:
Lucas Industries public limited company, West Midlands, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123506 ; 123447 ; 123450 ;
Abstract
A distributor type fuel injection pump has a main pumping plunger and an auxiliary plunger operable in synchronism by a cam. Also provided is a fluid pressure operable spill valve which is opened when the pressure of fluid developed by the auxiliary plunger becomes sufficiently high. The fluid displaced by the auxiliary plunger causes movement of a shuttle and the movement of the shuttle is halted to cause operation of the spill valve, by an hydraulic lock which is created when the movement of the shuttle closes an escape path from the end of the cylinder in which it is located.