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:
Jul. 06, 1976
Filed:
Jun. 02, 1975
Applicant:
Inventor:
Henry Wayne Blackwell, TX, US;
Assignee:
Dresser Industries, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 53 ; 166 66 ; 166 84 ; 277 28 ;
Abstract
A stuffing box and associated control system having the facilities for sensing a leak past the polished rod seals and for correcting the leak by adjustment of the seals, utilizes a pressurized piston system for tightening the seals around the polished rod and also features means for signalling the well operator about the leak, for shutting down the pumping apparatus, and for achieving a final pack-off of the wellhead.
Blackwell, Henry. (1976). Stuffing box control system (U.S. Patent No. 3967678). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3967678
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile