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:
Apr. 01, 1986
Filed:
Oct. 17, 1984
Gary W Knox, Langley, OK (US);
Other;
Abstract
A stuffing box for the reciprocal polish rod of a producing oil and/or gas well bore, the rotatable rod of a pump, or the like and comprising a housing disposed around the outer periphery of the rod and concentrically arranged with respect thereto to provide a cooling chamber around the outer periphery of the rod, upper and lower bushing members disposed in the housing and around the outer periphery of the rod for assuring an efficient axial alignment between the rod and the housing during reciprocation of the rod, annular sealing members interposed between the bushings and the rod for precluding leakage of fluid therebetween with the use of the usual packing assemblies, a charging seal provided at the lowermost bushing and responsive to pressure differentials acting thereacross for admitting fluid into the cooling chamber while precluding movement of fluid from the cooling chamber around the charging seal, a valved internal passageway provided in the stuffing box providing communication between the cooling chamber and a fluid reservoir for automatically controlling circulation of the fluid to and from the cooling chamber as required during operation of the stuffing box and rod, and one embodiment of the stuffing box including a fluid seal for isolating the cooling chamber from any fluid which may be present in the fluid reservoir.