Pyrolytic boron nitride heating unit

Details Pyrolytic boron nitride heating unit Pyrolytic boron nitride heating unit

1992-09-29

1994-08-30

Evans, Geoffrey S.

Electric heating

Heating devices

With heating unit structure

118725, 118726, 392389, C23C 1400, H05B 310

Patent

active

053430220

ABSTRACT:
A pyrolytic boron nitride heating unit composed of a dielectric base of boron nitride and a pyrolytic graphite heating element having contact ends for connection to an external power supply through a contact assembly comprising graphite posts connected to the contact ends with each post having a pyrolytic boron nitride coating and exposed attachment ends spaced a predetermined minimum distance from the contact ends for connection to the power supply. The contact assembly preferably also includes flexible graphite washers for connection between the contact ends and the graphite posts.

REFERENCES:
patent: 1528388 (1925-03-01), Speiers
patent: 2640861 (1953-06-01), Kremers
patent: 3637980 (1972-01-01), Fox et al.
patent: 4164646 (1979-08-01), Grise
patent: 4264803 (1981-04-01), Shinko
patent: 4755658 (1988-07-01), Wilsey
patent: 4927994 (1990-05-01), Leger
patent: 5031229 (1991-07-01), Chow
patent: 5059770 (1991-10-01), Mahawili
patent: 5155652 (1992-10-01), Logan et al.
patent: 5233165 (1993-08-01), Maumus et al.
Patent Abstracts of Japan vol. 16, No. 200 (E-1201) May 13, 1992 and JP.A. 04 032 182 (Toshiba Lighting & Technol Corp.) Feb. 4, 1992.

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