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:
Feb. 14, 1978
Filed:
Jan. 28, 1976
Ronald A Jackowski, Palatine, IL (US);
Chicago Rawhide Manufacturing Co., Elgin, IL (US);
Abstract
A hub cap assembly for vehicle axles which includes a rigid hub cap body with a sidewall portion and a radially inwardly directed flange having a window therein so that the lubricant level in the axle housing can be seen without removing the hub cap. The window is received by a flange having inner and outer axially directed surfaces and an inner edge defining an opening in the cap body. The window unit includes a transparent central panel and a mounting portion comprising first and second annular, generally axially extending window-mounting flanges which are spaced radially apart from each other so as to define an annular seal-receiving groove. One window-mounting flange has an axially facing end portion snugly received against the outer axially directed surface, and another window-mounting flange extends partly through the cap body opening. The other or second window-mounting flange includes a locking device with a part which snugly engages the inner axially directed surface of the flange. A seal ring is disposed in the seal-receiving groove, with the locking device and the first window-mounting flange engaging the inner and outer axially directed surfaces of said window-receiving flange respectively. This serves to compress the seal ring axially between a part of the groove and the outer axially directed flange surface, thereby establishing an oil-tight seal between the cap body and the window unit.