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:
Jun. 07, 1983
Filed:
Apr. 19, 1982
Anthony C Back, Slough, GB;
Crane Packing Limited, Slough, GB;
Abstract
A shaft seal including a sealing element and a drive ring assembly for mounting the sealing element with respect to a shaft, for rotation therewith; the drive ring assembly comprising a pair of concentric rings one mounted within the bore of the other, a plurality of circumferentially spaced radial clamping screws in screw threaded engagement with the outer ring, so that they may be tightened against the outer surface of the inner ring, the abutting surfaces of the screws and the inner ring being mutually inclined, so that tightening of the screws against the inner ring, will cause the inner ring to move axially towards a shoulder on the bore of the outer ring, so as to compress a sealing ring positioned between the shoulder and the opposed end of the inner ring, thereby causing the sealing ring to expand radially into sealing engagement with the opposed surfaces of the shaft and the outer ring, while at the same time said screws deform the inner ring into clamping engagement with the shaft.