Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-10-05
1998-08-18
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 47, 310 40MM, 606180, 429 9, 429149, 429628, H02K 714, F02M 900
Patent
active
057961883
ABSTRACT:
A medical instrument, such as a surgical drill, includes a battery-powered handpiece and a booster. The handpiece includes an electrical device, such as a motor, having an operating characteristic responsive to changes in DC voltage and a battery that applies a first DC voltage to the electrical device. The booster is disposed externally of the handpiece body and includes a DC power source and a cable for connecting the DC power source with the battery in the handpiece to apply a second DC voltage to the electrical device. The operating characteristic of the electrical device, e.g., speed, is modified by selectively coupling or decoupling the booster from the handpiece.
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Stephan Steven L.
Williams Timothy A.
Xomed Surgical Products, Inc.
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