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. 17, 1981
Filed:
Aug. 13, 1979
Applicant:
Inventor:
Reginald K Ringel, Decatur, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 343 ; 277226 ;
Abstract
A liquid-filled radial seal (12) includes an annular seal portion (36) and an annular body portion (34) connected thereto and defining an internal chamber (44) with an incompressible liquid (56) therein. The seal portion (36) has a sealing surface (64) and a cross sectional configuration tapering divergingly away from the sealing surface (64) to a cylindrical reference boundary (38) located between the portions (34,36). The chamber is spaced radially away from the reference boundary (38) and the free radial distance between the chamber (44) and the sealing surface (64) is preferably a preselected proportion of the overall radial height of the seal.