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. 02, 1993
Filed:
Dec. 02, 1991
Applicant:
Inventors:
Osmaly Osorio, San Tome, VE;
Arcangel Hernandez, San Tome, VE;
Assignee:
Corpoven, S.A., Caracas, VE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 84 ; 277 64 ; 277 66 ;
Abstract
A reciprocable polished rod projects through a housing and a stuffing box downstream of the housing. A plurality of packings are provided in the upper portion of the housing and contacting the rod preventing fluid leakage from the housing. A retainer holds the packings in place and adjustable pressure is exerted on the retainer and on the packings.
Osorio, Osmaly. (1993). Polished rod protection and sealing device (U.S. Patent No. 5257812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5257812
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile