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. 13, 2001
Filed:
Oct. 20, 1999
Applicant:
Inventors:
Walter Fritz, Immenstaad, DE;
Reinhold Mayer, Eriskirch, DE;
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 3/118 ;
U.S. Cl.
CPC ...
F16K 3/118 ;
Abstract
The device for complete draining of the oil in a component of a motor vehicle such as hydraulic steering, transmission with converter or automatic transmission which has within the component, an oil drain valve for at least one oil chamber in the component, which oil drain valve is automatically opened when the plug of the component is removed.