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. 07, 1989
Filed:
Dec. 15, 1988
Applicant:
Inventors:
David J Larkins, Brampton, CA;
John C Schneider, Acton, CA;
Assignee:
Hydrochem Developments Ltd., Brampton, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277105 ; 277-9 ; 277 59 ; 277 64 ; 277104 ; 277123 ; 366331 ;
Abstract
A shut off seal in a device having a rotatable shaft extending through a nozzle side entry structure of a tank is provided by means of a slidable stuffing box housing which can be moved by jack screws into engagement with a sealing collar fastened to the shaft inboard of the housing. The arrangement enables the changing of the packing about the shaft without draining the tank.