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, 1977
Filed:
Jul. 09, 1975
Applicant:
Inventors:
Robert J Deller, Cincinnati, OH (US);
Edwin L Carmel, Cincinnati, OH (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M / ;
U.S. Cl.
CPC ...
184-64 ; 1841 / ; 184 / ; 308 95 ;
Abstract
A pressurized lubricant charging and leak detection apparatus and method to fill the lubricant reservoir of a wheel hub with lubricant and detect lubricant leaks therefrom. The apparatus includes a tubular filling probe which may be inserted into the hub which is connected through valving to a pressurized lubricant supply to fill the reservoir with lubricant and there with a pressurized air supply to charge air into the reservoir until a constant air pressure is established in the reservoir; whereafter, a drop in air pressure within the reservoir indicates lubricant leak from the hub.