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. 20, 1982
Filed:
Aug. 08, 1979
Werner Babel, Pfronten-Meilingen, DE;
Maho Werkzeugmaschinenbau Babel & Co., Pfronten-Meilingen, DE;
Abstract
A switching device for variable speed gears in machine tools having an assembly which includes a plurality of axially disposed, rotatably-driven cam discs, each of which is associated with an electric microswitch. Non-rotatable spacers serve to position the cam discs. A spherical key bed clamp axially clamps the cam discs together while permitting rotation of individual ones thereof. A non-rotating indicating disc displays the present RPM or respective gear stage. A shock absorber in the individual gear trains between switching bars and their respective electric motors provides sufficient damping and cushioning to prevent a hard start-up impact when the motor is switched on or when a sliding gear block is engaged. The shock absorber may include an elastic linkage or an elastic spur gear in a toothed wheel gear reduction unit located between the motor drive shaft and the link shaft.