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:
Oct. 26, 1976
Filed:
Feb. 27, 1976
Dennis E Kemp, Jr, South Orange, NJ (US);
Other;
Abstract
The present invention relates to a self-compensating rotary seal member such as is used in low pressure applications, i.e. where a drive shaft extends through a container wall. The seal member is characterized by an elastomeric collar member mounted on the drive shaft within a housing, the ends of the collar being in frictional driving connection with a spaced pair of thrust washers, the washers in turn being yieldingly pressed against wear plates formed of material having a low coefficient of friction. Sealing is effected in a direction axially of the shaft by the interfit of the collar about the shaft, and in the direction normal to the axis by the frictional and rotary engagement of the thrust washers against portions of the wear plate or plates surrounding the shaft and disposed at the ends of the housing. Since the seal, in a radial direction, is effected between surfaces aligned normal to the direction of rotation of the shaft, substantial degrees of eccentricity can be accommodated, as can a degree of tilting of the shaft relative to the housing.