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:
Aug. 13, 2002
Filed:
Jul. 07, 2000
Ronn G. Smith, Sheridan, WY (US);
Big Horn Valve, Inc., Sheridan, WY (US);
Abstract
The invention described herein is an electrically operated rotary actuator. It is intended primarily for use with the axially rotated VOST valve in applications requiring remote or automatic valve operation, although it may have other applications. The actuator delivers 180 degrees of angular displacement to the rotating member of the VOST valve, as required to open or close the valve. It also effects a small axial displacement to provide seal separation during rotation to minimize seal wear. The actuator is designed to produce low friction and a high torque-to-mass ratio relative to existing actuators. Once operated by an electric signal, the actuator is designed to latch in either the open or closed position without holding current or other externally applied energy.