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. 23, 2003
Filed:
Jun. 26, 2001
Frederic Gagnon, Chatham, CA;
Siemens Canada Limited, Ontario, CA;
Abstract
An apparatus and method for reducing heat transfer between a motive force device and a valve. The apparatus consists of a regulator valve. The valve comprises a wall defining a flow passage disposed along a longitudinal axis. A closure member is disposed in the flow passage for rotation about an axis oblique to the longitudinal axis. The closure member is movable to a first position to prevent flow in the flow passage and the closure member is also movable to a second position to permit flow in the flow passage. A motive force device is disposed along the axis and coupled to the closure member by an insulator member. The motive force device is disposed such that it can rotate the closure member between the first position and the second position about the axis. The valve also comprises a spacing chamber having an inner wall and an outer wall. The inner wall forms a volume that houses the insulator member, the outer wall of the spacing chamber is coupled to the motive force device and the flow passage. The method comprises coupling a chamber having a defined volume to the motive force device and the regulator valve; and connecting the driveshaft of the motive force device to the actuating shaft of the valve with an insulator member.