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. 04, 1977
Filed:
Mar. 19, 1973
Applicant:
Inventor:
Harold L Reinsma, Dunlap, IL (US);
Assignee:
Caterpillar Tractor Company, Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01m / ;
U.S. Cl.
CPC ...
184 / ; 141-7 ; 340242 ; 184-64 ;
Abstract
An apparatus and method for vacuum evacuation and pressure filling of a lubricant reservoir are provided which includes a sequence timing and shutoff mechanism for controlling evacuation, testing for air leaks, and filling with lubricant. Visual indication of mechanism performance is provided. A charging gun is adapted for sealingly mating with an opening in the reservoir. Alternatively, a pointed probe utilizable with stoppers of the conventional as well as vented type may be used.