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:
Jan. 05, 2010
Filed:
Jan. 31, 2008
Paul John Smith, Peterborough, GB;
Paul John Smith, Peterborough, GB;
Perkins Engines Company Limited, Peterborough, GB;
Abstract
A fuel system is disclosed. The fuel system has a first pump supplying fuel at a first pressure. The fuel system also has a fuel filter fluidly connected downstream of the first pump. The fuel system further has a second pump receiving fuel at a second pressure and fluidly connected downstream of the fuel filter. The fuel system additionally has a first passage fluidly connecting an outlet of the first pump to an inlet of the first pump. The fuel system also has a valve located within the first passage and configured to selectively allow fuel flow through the first passage. The fuel system further has a second passage fluidly connecting an inlet of the second pump to the valve, wherein the second pressure acts on the valve to affect fuel at the first pressure to flow to the inlet of the first pump via the first passage when the second pressure is greater than a predetermined pressure.