Tightenable electrical sleeve heater

Details Tightenable electrical sleeve heater Tightenable electrical sleeve heater

1998-06-05

1999-10-05

Walberg, Teresa

Electric heating

Heating devices

With heater-unit housing, casing, or support means

338226, H05B 358

Patent

active

059618680

ABSTRACT:
An electrical heater for heating an object having a generally cylindrical outer surface has a helicoidal coil having a plurality of turns centered on an axis and inner and outer ends and adapted to fit around the object in contact with the outer surface thereof. A source of electricity is connected to the inner end for supplying electricity thereto and thereby heating the coil. An anchor fixed on one of the turns adjacent the outer end is connected to an element extending to the anchor for drawing the outer end and anchor together and thereby reducing an inside diameter of at least an outer turn of the coil and tightening the outer turn around the object around which the coil is fitted.

REFERENCES:
patent: 4091355 (1978-05-01), Beck
patent: 4181060 (1980-01-01), Payne
patent: 5456592 (1995-10-01), Shindo
patent: 5798504 (1998-08-01), Schwarzkopf

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