Claims
- 1. A direct current commutator motor adapted to be driven by a direct current power source obtained by rectifying an alternating current power source, said motor comprising:a first brushes adapted to be electrically connected with a plus pole of the direct current power source, said first brush being made of a non-metallic material having a high resistivity; a second brush adapted to be electrically connected with a minus pole of the direct current power source, said second brush being made of a material having a low resistivity; a commutator having a rotor wire winding, said first and second brushes being slidingly engaged with said commutator to supply the electric current to the rotor wire winding; and a capacitor connected parallel to an output of the direct current power source.
- 2. The direct current commutator motor according to claim 1, wherein said first brush is a carbon brush containing no metal and said second brush is a metal-mixed graphite brush.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-170492 |
Jun 1999 |
JP |
|
Parent Case Info
This is a continuation of U.S. patent application Ser. No. 09/575,667, filed Jun. 15, 2000, now abandoned, the contents of which are expressly incorporated by reference herein in its entirety.
US Referenced Citations (11)
Foreign Referenced Citations (6)
Number |
Date |
Country |
0078417 |
May 1983 |
EP |
2234757 |
Feb 1991 |
GB |
2274552 |
Jul 1994 |
GB |
54-16242 |
Jun 1979 |
JP |
55068847 |
May 1980 |
JP |
57196851 |
Dec 1982 |
JP |
Non-Patent Literature Citations (4)
Entry |
English Language Abstract of JP 54-16242, Jun. 27, 1979. |
English Language Abstract of JP 57-196851, Dec. 2, 1982. |
English Language Abstract of JP 55-068847, May 23, 1980. |
“University Physics”, 6th ed., Sears et al., Addition-Wesley Publishing Company, p. 537. |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/575667 |
Jun 2000 |
US |
Child |
10/229290 |
|
US |