The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 15, 1985

Filed:

Dec. 22, 1981
Applicant:
Inventors:

Heinrich W Steinel, D-4840 Rheda-Wiedenbrueck, DE;

Hans Siwon, D-8201 Obing, DE;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ; B67D / ; H01C / ;
U.S. Cl.
CPC ...
219230 ; 219241 ; 219302 ; 219505 ; 219530 ; 219540 ; 219541 ; 2221465 ; 2351 / ; 235135 ; 338 / ;
Abstract

An apparatus for liquifying a rod of binding by application of heat includes a die-cast aluminum heating member having an elongated conical first channel decreasing in diameter from an inlet adapted to receive a rod of liquifiable bonding material through an elastic funnel surrounding the inlet to an outlet for discharging liquified material through a one-way valve. An electric heater is disposed in a second channel in said member parallel to the first channel and includes an elongated electrically insulating and elastic housing defining a cylindrical cartridge receiving at least one flat PTC resistor disposed between at least a pair of pressure bodies in the housing on opposite sides of the least one PTC resistor. At least one elongated, curved leaf spring is disposed between one of the pressure bodies and at least one PTC resistor for applying pressure to the bodies and the at least one PTC resistor to maintain constant contact pressure therebetween even under thermal expansion and contraction.


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Steinel, Heinrich. (1985). Electrically heated apparatus employing a ptc heater for liquifying a (U.S. Patent No. 4493972). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4493972

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