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:
Aug. 06, 2002
Filed:
Sep. 25, 2000
Stefan Beetz, Idar-Oberstein, DE;
Klaus Reichel, Domsuhl, DE;
PNP Luftfedersysteme GmbH, Crivitz, DE;
Abstract
Known oscillating motors have inter alia starting difficulties resulting from the fact that the sliding seal ring is subject to pressures applied within said ring, even at a standstill. According to the invention, an oscillating motor is provided, comprising a sliding seal ring capable of axially sliding on a journal ( ) of the output shaft ( ) and which rests on an internal surface of the cover ( ) with a sliding and sealing surface. Annular rings which are located on the cover side of the sliding seal ring ( ) are connected through pressure compensation bores ( ) and pressure compensation channels ( ) to the side of the sliding seal ring ( ) oriented towards the pressure chamber ( ) or the discharge chamber ( ). Static pressure in the housing ( ) of the diagonal seal ring ( ) and dynamic pressure in the pressure chambers ( ) can thus be compensated.