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:
Jul. 19, 1988
Filed:
Feb. 25, 1987
Karl Hiestand, Pfullendorf, DE;
SMW Schneider & Weisshaupt GmbH, Meckenbeuren, DE;
Abstract
An apparatus for operating the clamping jaws of a chuck. The clamping jaws are coupled with an adjustment member which, for producing an adjustment movement is in driving connection with an adjusting drive mechanism. The latter is formed by a two-part rotary motor that is disposed externally of the main spindle and is concentric thereto. The rotary motor is rotatably mounted as a self-contained unit. One functional member of the rotary motor is driveable directly by the main spindle and is drivingly supported thereon. The other functional member is drivingly connected with the adjustment member. To maintain the clamping force, the two functional members can be positively secured to one another. To undertake an adjustment movement, the two functional members can be infinitely variably moved relative to one another.