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Class Information
Number: 310/47
Name: Electrical generator or motor structure > Dynamoelectric > Rotary > Magnetic motors > Portable or hand tool (e.g., dry shavers)
Description: Subject matter in which the dynamoelectric device is arranged to be transported or operated while held in the hand.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5796188 |
Battery-powered medical instrument with power booster |
Aug. 18, 1998 |
| 5793130 |
Miniature electric generator and lighting apparatus |
Aug. 11, 1998 |
| 5712518 |
Electric motor drive unit for surgical tools |
Jan. 27, 1998 |
| 5702420 |
Motorized suction punch forceps |
Dec. 30, 1997 |
| 5684351 |
Electrical driving device comprising more than one permanent-magnet-excited rotor and a shaver comprising said driving device |
Nov. 4, 1997 |
| 5614774 |
Air inducer for electric power tool |
Mar. 25, 1997 |
| 5565719 |
Hand power tool |
Oct. 15, 1996 |
| 5550416 |
Control mechanism of revolving speed of an electric tool |
Aug. 27, 1996 |
| 5485042 |
Motor drive unit with torque control circuit |
Jan. 16, 1996 |
| 5298821 |
Battery-powered tool |
Mar. 29, 1994 |
| 5170851 |
Electric tool |
Dec. 15, 1992 |
| 5168186 |
Spindle motor |
Dec. 1, 1992 |
| 5099160 |
Powered hand tool having an enclosed-ventilated drive motor |
Mar. 24, 1992 |
| 5093593 |
Surgical handpiece with motor having positive sensor location |
Mar. 3, 1992 |
| 5089729 |
Power tool with brush shifting and reversing switch assembly |
Feb. 18, 1992 |
| 5089738 |
Battery-driven handtool |
Feb. 18, 1992 |
| 5012147 |
Domestic vibration apparatus with lever drive |
Apr. 30, 1991 |
| 4905423 |
Electric rotary power tool apparatus holdable by hand during operation, kit comprising the same, and novel switch means therefor |
Mar. 6, 1990 |
| 4873461 |
Electric motor sterilizable surgical power tool |
Oct. 10, 1989 |
| 4868435 |
Single phase synchronous motor vibration apparatus |
Sep. 19, 1989 |
| 4866319 |
Erasing machine |
Sep. 12, 1989 |
| 4791327 |
Drive mechanism for a domestic vibration apparatus |
Dec. 13, 1988 |
| 4760297 |
Small appliance driven by unidirectional single-phase synchronous motor |
Jul. 26, 1988 |
| 4733118 |
Low damping torque brushless D.C. motor |
Mar. 22, 1988 |
| 4709752 |
Cooling arrangement for heat generating electrical components |
Dec. 1, 1987 |
| 4689534 |
Electrically driven hand-operated tool |
Aug. 25, 1987 |
| 4595850 |
Variable torque motor for hygienic apparatus |
Jun. 17, 1986 |
| 4581499 |
Switch limit assembly |
Apr. 8, 1986 |
| 4486176 |
Hand held device with built-in motor |
Dec. 4, 1984 |
| 4420703 |
Permanent magnet motor driven window lifter |
Dec. 13, 1983 |
| 4385276 |
Mounting of semiconductor sensing means for an electromagnetic tachometer in a portable electric tool |
May. 24, 1983 |
| 4278907 |
D.C. Subfractional horsepower motor with flux shunt for variable RPM adjustment |
Jul. 14, 1981 |
| 4237393 |
Drive motor for a dental handpiece |
Dec. 2, 1980 |
| 3992778 |
Electric clipper |
Nov. 23, 1976 |
| 3946486 |
Portable electrical shaver with pivotally mounted motor |
Mar. 30, 1976 |
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