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:
May. 01, 1990
Filed:
Jun. 17, 1988
Applicant:
Inventor:
John H Buscher, East Amherst, NY (US);
Assignee:
HSC Controls, Inc., Buffalo, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335229 ; 335230 ; 335279 ;
Abstract
A torque motor including a frame of soft magnetic material, such as soft iron, spaced first end portions on the frame, an armature which is a magnet, spaced second end portions on the armature, a mounting member for mounting the armature on the frame for allowing motion of the armature relative to the frame, each of the end portions of the armature including a north pole and a south pole, air gaps between the end portions of the frame and the end portions of the armature, a coil mounted on the frame, and the armature being in the form of a laminate with a central layer being a rare earth magnet between outer layers of magnetic material.