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US 6,686,572 B1Granted
Two-stage heating device for a handle
OwnerShih-Hsiung Wuinventor
Life of this patent
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Abstract
A handle includes a tubular member including two parallel helical recessed portions formed on an outer periphery thereof, a rubber jacket mounted around the tubular member, and two heating coils of different heating efficiency being respectively mounted in the parallel helical recessed portions for heating the rubber jacket. Two-stage control of heating for controlling the temperature of the rubber jacket in response to the temperature of the environment is provided.
Claims5
A handle comprising:
- a tubular member including two parallel helical recessed portions formed on an outer periphery thereof;
- a rubber jacket mounted around the tubular member;
- and
- two heating coils of different heating efficiency being respectively mounted in the parallel helical recessed portions for heating the rubber jacket.
1 more element
Dependencies are inferred from the claim text.