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:
Dec. 15, 1981
Filed:
Aug. 17, 1979
Eugen Unterstrasser, Aschau, DE;
Netzsch-Mohnopumpen GmbH, Selb, DE;
Abstract
Improved joint seal for the rotor drive of an eccentric screw machine comprises a sealing cuff of elastomeric or thermoplastic material with a radially exterior rim bead connected to the outer joint sleeve by means of an exterior supporting ring, and a radially interior rim bead with a generally axis-parallel ring apron radially outward thereof. An interior supporting ring with an axis-parallel annular limb connects the radially interior rim bead of the cuff to a coupling rod of the joint with the annular limb of the interior supporting ring clasped between the radially interior rim bead and the ring apron disposed outwardly thereof on the sealing cuff. The radially exterior rim bead may be connected to the joint sleeve by means of an exterior suporting ring similar to the interior supporting ring.