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. 22, 1998
Filed:
Jun. 27, 1995
Applicant:
Inventors:
Paul Buckley, Rainham, GB;
Ian Roy Thornthwaite, Hempstead, GB;
John Roderick Jefferson, Rainham, GB;
Assignee:
Lucas Industries public limited company, Solihull, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417462 ; 417221 ;
Abstract
A pump is disclosed having a variable cam arrangement under the influence of which a plunger is reciprocable. The variable cam arrangement comprises a plurality of cam rings which in an embodiment of the pump are relatively moveable in order to adjust the shape of the effective cam surface of the cam arrangement, and hence adjust the delivery rate of the pump.