| Patent Number |
Title Of Patent |
Date Issued |
| 7262525 |
Rotor and motor having the same |
August 28, 2007 |
| A rotor of a motor includes a cylindrical rotor shaft that is formed through plastic working. The shaft includes a positioning portion that is formed in an inner peripheral surface of the cylindrical shaft by the plastic working of the shaft. The positioning portion is detachably eng |
| 7030525 |
Method for manufacturing motor yoke, motor yoke, and motor |
April 18, 2006 |
| A cylindrical portion of a motor yoke has a securing portion to secure a stator core at an axial section except the axial ends of the cylindrical portion. When manufacturing the yoke, at first, a work is prepared that corresponds to the yoke before the securing portion is formed. A mandr |
| 6720701 |
Method of manufacturing commutator, apparatus for manufacturing commutator, and commutator |
April 13, 2004 |
| A method of manufacturing a commutator includes the steps of punching a commutator forming plate out of a plate member having a plurality of projections formed at predetermined intervals in such a way that the projections extend in parallel to one another, forming the commutator form |
| 6701603 |
Method of manufacturing yoke of electric rotating machine |
March 9, 2004 |
| A cup shaped yoke made of sheet material has an opening portion provided in a side wall on an axial end side, a shoulder portion provided in the sidewall on another axial end side, a magnet installation portion for installing a magnet, which is provided in the side wall between the o |
| 6700295 |
Rotor of electric motor and manufacturing method thereof |
March 2, 2004 |
| A rotor core includes a plurality of first core sheets and a plurality of second core sheets. The first core sheets and the second core sheets are laminated in the axial direction of the rotor core. Each first core sheet includes a plurality of first teeth laid out in a ring form on a sa |
| 6643911 |
Method of manufacturing yoke through multistage-drawing process |
November 11, 2003 |
| A plate material is drawn to form a first-drawing product in the shape of an elliptically cylindrical container having an elliptical cross section. Then, the first-drawing product is drawn to form a re-drawing product in the shape of a generally circular cylindrical container. Next, the |
| 6568064 |
Method of manufacturing motor yoke |
May 27, 2003 |
| In a method of manufacturing a partly flat yoke having curved circumferential walls to which magnets are to be attached and having parallel flat circumferential walls which constitute main magnetic paths and whose each radial thickness is larger than that of the curved circumferentia |
| 6489703 |
Commutator forming plate, commutator, motor with commutator and manufacturing the same |
December 3, 2002 |
| In a commutator forming plate to be rounded into a cylinder which is to be cut at constant angular intervals to form a plurality of commutator segments after being filled with insulating material, a plurality of lands rising at given intervals on one surface of a plate is provided and a |
| 6018977 |
Method of forming a cylindrical boss and a die therefor |
February 1, 2000 |
| A crude work having a cylindrical boss formed integrally with a base plate is processed to a final product by a press work without using additional machining. An inner diameter of the boss is enlarged by a punch, and at the same time an outer diameter of the boss is shrunk by an outer di |
| 5440800 |
Method of pre-applying soldering material to a motor commutator |
August 15, 1995 |
| A method of adhering in advance a soldering material to a location on each of a plurality of claw-shaped portions of a commutator at which a winding for the armature of an electric motor is to be electrically connected thereto, for ensuring a strong and reliable electrical connection bet |
| 5313697 |
Method of manufacturing a link rod of a wiper for a motor vehicle |
May 24, 1994 |
| A link rod of a wiper for a motor vehicle, comprising: a cylindrical section; a pair of flat sections formed at opposite ends of the cylindrical section, respectively by crushing the opposite ends of the cylindrical section from above and below; and a pair of resinous coupling joints |
| 5255425 |
Method of manufacturing laminated core for dynamo-electric machine |
October 26, 1993 |
| A method of manufacturing a laminated core for a dynamo-electric machine, having a shaft and a plurality of core sheets with through holes in the center thereof for inserting the shaft therethrough and a plurality of slot holes in the peripheral portion thereof. In the same method, there |
| 5213008 |
Link rod of wiper for motor vehicle and method of manufacturing the same |
May 25, 1993 |
| A link rod of a wiper for a motor vehicle, comprising: a cylindrical section; a pair of flat sections formed at opposite ends of the cylindrical section, respectively by crushing the opposite ends of the cylindrical section from above and below; and a pair of resinous coupling joints |
| 5204574 |
Commutator for a motor and method of manufacturing the same |
April 20, 1993 |
| Four side walls surrounding a recess in the center of a commutator segment are extended to overhang toward the recess comprising claws and cut-and-raised protrusions, thereby ensuring that the commutator segment is securely engaged with the resin filled in the recess against any of the |
