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Class 29/27B - Commutator


Subclass of Class 29 - Metal working
No. of patents: 11
Last issue date: 04/22/2008


NumberTitleIssue Date
7360289Apparatus for milling a surface
The present invention provides an apparatus for use on a roof or the like which incorporates an insulation material. The invention allows workers to shave the insulating layer to smooth, remove high spots, or create slopes, valleys or sumps, in order to achieve posi...
04/22/2008
7219411Method for manufacturing commutator having commutator segments
A feed rate of a single-point cutting tool, which is an axial relative moving distance of the cutting tool along an outer peripheral surface of an unfinished commutator product per revolution of the unfinished commutator product, is reduced in an end part of a cutti...
05/22/2007
6952067Rotary electric machine and a method of producing the same
A surface of a commutator 5 is rubbed by a shakedown brush 21 other than ordinary brushes 11 to produce a carbon coat, whereby a shakedown process can be reduced or abolished. ...
10/04/2005
6293320Multi-purpose machining apparatus
A precision multi-purpose machining apparatus for facilitating lathing, milling, drilling, sawing or routing operations typically using a rotary-type cutting tool. In a preferred embodiment the multi-purpose machining apparatus of this invention is charac...
09/25/2001
5454284Commutator finishing methods and apparatus
Commutators of armatures for electric motors or other dynamo-electric machines are finished by subjecting them to inspection and turning operations. The first inspection operation determines the minimum amount of material that can be cut while producing a...
10/03/1995
5177842Apparatus for finishing surface of commutator of motor
An apparatus for finishing a surface of a commutator of a motor, in which a distance between a surface to be finished and a reference position is measured in advance prior to the surface-finishing, and thereafter, turning, cutting or buffing is performed....
01/12/1993
5174001Method and apparatus for finishing grooved articles
Grooves in an article such as a commutator are filled with a soft brittle material before a grooved surface of the article is cut. With the grooves thus filled, the cutting is performed continuously and smoothly without involving formation of burrs projec...
12/29/1992
4686730Semi-automatic armature assembly slot cleaner
An apparatus for cleaning the slots of newly assembled armatures of chips and burrs. The apparatus includes centrally or radially mounted cylinder means and a plurality of radially aligned blades, with suitable linkage means connected threrebetween for mo...
08/18/1987
4653965Automatic mica undercutter
An improved machine for undercutting the commutator of a DC motor. Designed specifically to undercut the mica insulation slots of a commutator, the device includes drive means to allow slippage of an undercutting assembly so that saw and spindle assembly ...
03/31/1987
4406192Apparatus for machining a planar side face of a piston ring
Apparatus for machining the planar side face of a piston ring having a cutting tool holder reciprocable with respect to the planar side faces of the piston rings in the axial direction thereof. A cutting tool is secured to the cutting tool holder so that ...
09/27/1983
4355553Portable turning tool
A portable turning tool for removing material from a worn component of a device such as a motor generator. The portable turning tool has a support member which is fixedly secured to the device in such a position so as to have a centrally located opening t...
10/26/1982
 
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