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:
Feb. 10, 2009
Filed:
Jun. 14, 2007
Applicants:
William J. Mcdonald, Houston, TX (US);
Timothy F. Price, Rockwall, TX (US);
Inventors:
William J. McDonald, Houston, TX (US);
Timothy F. Price, Rockwall, TX (US);
Assignee:
Dexter Magnetic Technologies, Inc., Elk Grove Village, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/12 (2006.01); F16K 31/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wellbore valve includes a valve operator arranged to move axially along an interior of the wellbore, the valve operator arranged to operate a valve. A valve actuator is disposed proximate the valve operator. The valve actuator is arranged to move from one longitudinal position to another. A linear magnetic gear is coupled at an input element thereof to the valve actuator. The gear is coupled at an output element thereof to the valve operator such that motion of the valve actuator is transferred to the valve operator.