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:
Jun. 05, 2001
Filed:
Nov. 04, 1999
Alexander Zernickel, Herzogenaurach, DE;
Jörg Wagner, Oberreichenbach, DE;
Horst Döppling, Herzogenaurach, DE;
INA Walzlager Schaffler oHG, , DE;
Abstract
The invention concerns a radial piston pump comprising a rotating pump shaft having an end portion connected to a rotationally fixed eccentric ring, said radial piston pump further comprising an eccentric bearing arranged on an outer peripheral surface of the eccentric ring, the eccentric bearing comprising a needle roller bushing having radially inward directed flanges between which bearing needle rollers are arranged for rolling, at least one pump plunger arranged in a pump housing and extending radially of the pump shaft being supported by an end face on the needle roller bushing, while the end portion of the pump shaft is supported in a housing via an adjacent second support bearing. According to the invention the eccentric ring and an inner ring of the support bearing (,) are configured as a one-piece bushing (,) shaped without chip removal, said one-piece bushing (,) being force-locked on the pump shaft (,) by a centric region (,), and both the centric region (,) and an eccentric region (,) of said one-piece bushing (,) comprise a radially outward directed flange (,) on an outer end so that an inseparable assembly consisting of the eccentric bearing (,) and the support bearing (,) is formed.