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US 6,310,322 B1Granted
Heated roller and heated roller assembly
AssigneeRaymond Industrial Ltd.
InventorsZheng Qing Yang, Yuan Kun Zhang
Life of this patent
Estimating the term…
Abstract
A heated roller assembly includes a heating platform, a plurality of rollers disposed on the heating platform and a circuit for automatically controlling a surface temperature of each roller. The heated rollers of the heated roller assembly include an outer portion and an inner portion disposed within the outer portion. The inner portion is made of thermoset plastic and includes a groove and a heating element disposed within the groove.
Claims21
A heated roller assembly, comprising:
- a heating platform;
- a plurality of rollers disposed on the heating platform, wherein each roller includes
- an outer portion;
- an inner portion made of thermoset
- plastic disposed within the outer
- portion and having a groove and a
- heating element disposed within the
- groove;
- and
- a circuit for automatically controlling a surface temperature of each roller including a control roller disposed adjacent to the plurality of rollers and having a temperature sensing element for detecting the surface temperature of the control roller, and a comparator responsive to the temperature sensing element for adjusting the power applied to the heating element of each roller.
7 more elements
A heated roller assembly, comprising:
- a heating platform;
- a plurality of rollers disposed on the heating platform, wherein each roller includes
- an outer portion;
- an inner portion made of thermoset
- plastic disposed within the outer
- portion and having a groove and a
- heating element disposed within the
- groove;
- and
- a circuit for automatically controlling a surface temperature of each roller having a control roller disposed adjacent to the plurality of rollers, wherein the control roller includes a thermistor for detecting the surface temperature of the control roller and a thermofuse for terminating power to each roller when the surface temperature of the control roller exceeds a predetermined surface temperature, and a comparator responsive to the thermistor for adjusting the power applied to the heating element of each roller.
7 more elements
A heated roller for heating hair, comprising:
- an outer portion;
- and
- an inner portion disposed within the outer portion made of thermoset plastic and having a groove and a heating element disposed within the groove such that the heating elements not in contact with outer portion.
Dependencies are inferred from the claim text.