Electricity: circuit makers and breakers – Solid contact – Plural actuators operate single switch
Reexamination Certificate
2006-04-25
2006-04-25
Enad, Elvin G. (Department: 2832)
Electricity: circuit makers and breakers
Solid contact
Plural actuators operate single switch
C200S341000
Reexamination Certificate
active
07034240
ABSTRACT:
An electric tool includes a power supply, a controlling apparatus and a two-way motor. The motor includes first and second leads. The controlling apparatus includes a first conductive element connected with the anode of the power supply, a second conductive element connected with the cathode of the power supply, a switching device comprising a carrier for carrying and switching the conductive elements between a neutral position, a first operative position and a second operative position. In the neutral position, the conductive elements do not contact the leads of the motor. In the first operative position, the first end of the first conductive element contacts the first lead of the motor and the second end of the second conductive element contacts the second lead of the motor. In the second operative position, the second end of the first conductive element contacts the second lead of the motor and the first end of the second conductive element contacts the first lead of the motor.
REFERENCES:
patent: 4351581 (1982-09-01), Wied
patent: 4678871 (1987-07-01), Wong
patent: 5170851 (1992-12-01), Kress et al.
patent: 6489578 (2002-12-01), Jung et al.
patent: 6555775 (2003-04-01), Van Bokhoven et al.
patent: 494835 (2002-07-01), None
Enad Elvin G.
Kamrath Alan D.
Klaus Lisa
Nikolai & Mersereau , P.A.
Yeou Yeng Industry Co. Ltd.
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