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:
Apr. 13, 1993
Filed:
Jan. 29, 1992
Ernst Elsner, Herbrechtingen, DE;
J. M. Voith GmbH, Heidenheim, DE;
Abstract
The invention concerns a coupling with a hub, for transmitting a torque to a shaft, with a cylindrical annular chamber arranged in the hub at a slight spacing from the shaft. The annular chamber can be pressurized with an hydraulically actuated servo valve arranged in the hydraulic fluid channel connecting to said annular chamber. A separate hydraulic fluid channel serves to actuate the servo valve. As control pressure is admitted to this second hydraulic fluid channel, the servo valve opens and establishes the connection between the first hydraulic fluid channel and the annular chamber for admission of a high-pressure medium. The advance of the connecting nipples onto the hub may be effected by remote actuation, thus enabling an automatic roll change, for instance in a rolling mill, without difficult and time-consuming manual assembly in congested space conditions.