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:
Aug. 21, 1984
Filed:
Jun. 02, 1983
Applicant:
Inventor:
William V Adams, Scotts, MI (US);
Assignee:
Durametallic Corporation, Kalamazoo, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 15 ; 277 22 ; 277 59 ; 277 65 ; 277134 ;
Abstract
A double or tandem mechanical seal construction having as an integral part thereof a pumping structure for effecting circulation of buffer fluid. The shaft sleeve is provided with surface irregularities thereon, such as a series of circumferentially spaced slots, so that the shaft sleeve functions as a pumping rotor. The surrounding seal stator has supply and discharge ports extending radially therethrough, which ports extend substantially tangentially with respect to the shaft sleeve so that the latter, due to its rotation, will effectively pump and hence circulate the cooling or buffer fluid through the buffer chamber.