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:
Jan. 17, 1984
Filed:
Oct. 07, 1981
David K Stock, Green Bay, WI (US);
Robert J Wech, Green Bay, WI (US);
Amplas, Inc., Green Bay, WI (US);
Abstract
In a clutch-brake mechanism wherein an input member rotates first in one direction and then in the other, an axially shiftable output member, spline-connected to an output shaft, is clutched to the input member while it rotates in one direction and is declutched and braked while the input member rotates in the opposite direction. The output member has a driven clutch element facing in one axial direction for cooperation with a driving clutch element on the input member and has an oppositely facing braking element cooperating with a relatively stationary braking element which, however, is adjustingly rotatable. All said elements have axially projecting circumferentially spaced teeth for slipless torque transmission. A barrel cam rotating in synchronism with the input member control shifting of the output member through a lever that has a fulcrum, a connection with the output member spaced from the fulcrum, and a cam follower portion engaging the cam. The fulcrum is mounted for movement parallel to the output member axis, but pneumatic cylinders bias it in both directions towards a medial position from which it is displaced during full engagement of the braking elements and the clutching elements. A sensor responsive to fulcrum position can provide for automatic braking in response to excessive resistance to output member rotation.