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:
Jul. 02, 2002
Filed:
Sep. 12, 2001
Clemens Nienhaus, Neunkirchen-Seelscheid, DE;
GKN WalterSchied GmbH, , DE;
Abstract
A device to fill or deflate a tire of a vehicle, such as a tractor, is arranged on the wheel rim of a wheel. The device includes a housing with a second connecting port to connect to a first connecting port . An inner member is supported in the housing . The inner member and housing are both rotatable relative towards each other. The inner member has a third connecting port to connect to a connection , which leads to the pressure supply. A control valve is provided and coupled with the second connecting port. An annular chamber is connected to the second connecting port and the third connecting port . The annular chamber is formed between the housing and the inner member . Two seals are provided between the housing and the inner member . The seal laterally closes off the annular chamber . The seals are arranged on the inner member and abut, due to the pressurization of the annular chamber, a respective one of the mating surfaces connected to the housing