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:
Nov. 27, 2007
Filed:
Aug. 24, 2005
Albert S. Davis, Richmond, TX (US);
John M. Saldivar, Richmond, TX (US);
David R. Mefford, The Woodlands, TX (US);
Frank J. Arriens, Houston, TX (US);
Daryl L Ard, Kemah, TX (US);
Anthony Laitkep, Wharton, TX (US);
Leonard Martinak, Friendswood, TX (US);
Larry Vyvial, Rosenberg, TX (US);
Jim Mohrfield, Houston, TX (US);
Albert S. Davis, Richmond, TX (US);
John M. Saldivar, Richmond, TX (US);
David R. Mefford, The Woodlands, TX (US);
Frank J. Arriens, Houston, TX (US);
Daryl L Ard, Kemah, TX (US);
Anthony Laitkep, Wharton, TX (US);
Leonard Martinak, Friendswood, TX (US);
Larry Vyvial, Rosenberg, TX (US);
Jim Mohrfield, Houston, TX (US);
Cameron International Corporation, Houston, TX (US);
Abstract
A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includes a first slot disposed therethrough. A second slot is disposed in the rotating sleeve, wherein at least one of the slots is a helical slot. An axle engages both the first slot and the second slot. A shaft is coupled to the axle and extends through a connector flange that is coupled to an upper end of the lower housing. A piston is coupled to the shaft and movably disposed within an upper housing that is coupled to the connector flange. Axial movement of the piston within the upper housing will result in rotational movement of the rotating sleeve.