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:
Feb. 06, 2001
Filed:
Mar. 20, 2000
Klaus Reichel, Domsühl, DE;
Stefan Beetz, Idar-Oberstein, DE;
PNP Luftfedersysteme GmbH, Crivitz, DE;
Abstract
Known oscillating motors tend to present scaling problems; in particular they are often inadequately sealed in relation to the outside. The scaling elements also have a short service life as a result of the considerable strains to which they are subjected. The invention therefore provides an oscillating motor whose annular sealing ring consists of a sliding sealing ring (,) and a soft sealing ring, said rings being positioned next to each other on a common axis. The soft sealing ring is configured as a diagonal sealing ring (,) and is located on the sides of the pressure or discharge chambers (,). The sliding sealing ring (,) is configured so that it is torsionally rigid in relation to the rotor (,). For this purpose, it preferably has two axial grooves (,), said grooves being arranged so that they are parallel and in pairs. The grooves (,) correspond to driver elements (,) located on the rotor wings (,).