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. 31, 1994
Filed:
Jun. 24, 1992
Mikhail Godkin, San Diego, CA (US);
Other;
Abstract
An embodiment has an armature member having a linear core with transverse open slots distributed over its length. Two sets of coils are disposed in the slots and distributed over the length of the core preferably in an overlapping interlaced pattern such that when the sets of coils, or corresponding sub-sets of the coils, are simultaneously energized the magnetic forces produced by one augments the forces produced by the other to produce a greater total force. The armature member also has disposed on opposite sides of the core and parallel to the core a pair of linear commutators. A field member has a carriage which travels rectilinearly along the core between the commutators. Dual sets of brushes are linearly mounted on the carriage at opposite sides to communicate with the commutators. The dual sets of coils can be energized in parallel or in series via the brush/commutator contacts or each set of coils can be energized separately by independently powering the set's corresponding set of brushes. An impedance matching device allows armatures to be joined colinearly to increase the effective stroke of the field member without an impedance anomaly at the juncture.