Thermal deburring apparatus and method

Details Thermal deburring apparatus and method Thermal deburring apparatus and method

1984-05-11

1985-12-31

Dority, Jr., Carroll B.

Combustion

Process of combustion or burner operation

Starting or shutdown procedure

431 74, F23N 520

Patent

active

045618399

ABSTRACT:
To avoid venting of a deburring chamber and associated equipment after charge of the chamber with an explosive mixture if a spark plug (3a) has failed to ignite the mixture, a glow ignition block (4) is located in the path of gas communication between a mixing block (3) in which the spark plug is retained, and a glow plug (8) is located to have its glow portion exposed to the combustible gas mixture, preferably in a bypass (9) to a main gas path. A thermal element (12) monitors whether, upon application of an ignition pulse to the spark plug (3a), ignition has occurred by sensing a sharp temperature pulse; upon failure to sense such a temperature pulse, the glow plug is energized for ignition of the combustible mixture thereby. The spark plug may be of the vehicular internal combustion engine type; and the glow plug may, for example, be similar to "pre-glow" plugs used in vehicular-type Diesel engines.

REFERENCES:
patent: 2920450 (1960-01-01), Seglem
patent: 4474547 (1984-10-01), Drexel et al.
patent: 4487576 (1984-12-01), Martini

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