Defrosting heater with concentric glass tubes separated by...

Details Defrosting heater with concentric glass tubes separated by... Defrosting heater with concentric glass tubes separated by...

2007-05-08

2007-05-08

Campbell, Thor S. (Department: 3742)

Electric resistance heating devices

Heating devices

Radiant heater

C219S553000, C313S110000

Reexamination Certificate

active

10495780

ABSTRACT:
A defrost heater, in which the strength of an insertion force needed for inserting a second glass tube in a plug is specified to be smaller than that needed for inserting a first glass tube in a plug. Thereby, dispersion in the insertion force needed for attaching the plug with a double glass tube can be reduced, and the assembling efficiency is improved.

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International Search Report for application No. PCT/JP02/07426 dated Oct. 29, 2002.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 51025/1989 (Laid-Open No. 144385/1990), (Fujitsu General Ltd.), Dec. 7, 1990 and a partial English translation.

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