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. 25, 2006
Filed:
May. 13, 2002
Applicants:
Colin Andrew Mead, Dorchester, GB;
Alan Thomas Parsons, Dorchester, GB;
Stephen Arthur Pointer, Dorchester, GB;
Mark Arwyn Bennett, Guildford, GB;
Inventors:
Colin Andrew Mead, Dorchester, GB;
Alan Thomas Parsons, Dorchester, GB;
Stephen Arthur Pointer, Dorchester, GB;
Mark Arwyn Bennett, Guildford, GB;
Assignee:
QinetiQ Limited, , GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 49/00 (2006.01); F04B 1/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention relates to a pumping system. The design of the system is such that bi-directional operation can be achieved using a significantly smaller and hence lighter unit than those currently available. It uses the direction of rotation of the drive shaft to control the opening and closure of the by-pass means for controllably returning the fluid to the first reservoir.