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:
Nov. 22, 1983
Filed:
Mar. 23, 1981
Donald L Miller, Horseheads, NY (US);
Facet Enterprises, Incorporated, Tulsa, OK (US);
Abstract
A single surface electromagnetic cone clutch or braking device is disclosed which transmits torque from an input shaft to a drive plate member, through a plurality of spherical members, to a conical friction ring member and then to the output member. The spherical members are located in mutually opposing conical recesses within the drive plate member and an annular flange which is secured to the friction ring member. The clutch engaging forces are increased by the camming action of the spherical members in the conical recesses. The drive plate member also has a flexing member which permits the drive plate member to flex axially in order to minimize backlash noise associated with spherical balls engaging conical recesses. The armature is disposed normal to the electromagnetic winding to enable a large axially directed flex path to provide for a strong clutch engaging force. The friction ring member is threadably connected to the armature with relative movement prevented between the armature and the friction ring member by an axial wear and thread retarder member. The axial wear and thread retarder member biases the armature toward the pole faces of the electromagnetic winding. This biasing force insures that the threads in the friction ring member cooperatively engage the threads in the armature member. The biasing force of the retarder member biases the forward flank of the threads of the further ring member into engagement with the forward flank of the thread of the armature regardless of the thread clearance between the threads.