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:
Apr. 20, 1982
Filed:
Nov. 28, 1979
Ivor Fenne, Greenford, GB;
Richard J Andrews, Guildford, GB;
Lucas Industries Limited, Birmingham, GB;
Abstract
A fuel pumping apparatus includes an injection pump which is supplied with fuel through a passage from a feed pump. A throttle member having a groove is angularly adjustable to determine the rate of fuel flow. For this purpose the groove has variable communication with a port at the end of the passage. The throttle member has a further groove which when the throttle is closed to prevent fuel flow to the injection pump, places the port in communication with a further port connected to a low pressure. This allows fuel to be expelled from the injection pump so that delivery of small amounts of fuel to the engine does not occur when the throttle is closed.