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:
Jun. 05, 1979
Filed:
Jan. 26, 1978
Gerald H Leland, Dayton, OH (US);
Ledex, Inc., Dayton, OH (US);
Abstract
A rotary solenoid has a substantially constant clearance air gap, adapted to proportional operation, includes a generally cup-shaped case of ferromagnetic material, an energizing coil is received in the case adjacent, an annular stator member is received in the open end of said case adjacent said coil and has at least one arcuately formed pole member, an armature has sector-shaped poles corresponding in arcuate spacing and in number to the stator poles, a plate is carried on one end of said armature and defines with the case at least one pair of cooperating non-inclined, arcuately-extending ball bearing recesses, and can conveniently define the extent of rotation of said armature.