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:
Oct. 02, 2018
Filed:
Jan. 31, 2013
Quantex Patents Limited, London, GB;
Richard Paul Hayes-Pankhurst, London, GB;
QUANTEX PATENTS LIMITED, London, GB;
Abstract
A pump is formed by a housing () having a fluid inlet () and a fluid outlet () and containing a rotor () forming with the housing () chambers () that, on rotation of the rotor () by a drive, convey fluid from the inlet () to the outlet () to pump the fluid. A seal assembly () is arranged between the outlet () and the inlet (). The seal assembly () includes a membrane () that contacts the rotor () and a flexible resilient spring member () that provides a force urging the membrane () against the rotor (). The spring member () thus, on rotation of the rotor (), moves radially relative to the axis of rotation of the rotor () and is arranged to provide a force on the rotor () via the membrane () that is constant and a minimum to maintain a seal between the rotor () and the seal () for a given outlet pressure of the pumped fluid.