Apparatus and method for anticipating an empty spool condition

Details Apparatus and method for anticipating an empty spool condition Apparatus and method for anticipating an empty spool condition

1977-08-08

1978-10-10

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 36, 242 57, B65H 7500, B65H 2504

Patent

active

041192796

ABSTRACT:
A pressure sensitive valve is mounted on the barrel of a magnet wire spool to be closed by wire wrapped on the barrel. Superatmospheric pressure is maintained internally of the barrel which is released upon opening of the valve by removal of the wire from the spool. A pressure-sensing device activates in response to such pressure release to provide a warning signal or suitable control function.

REFERENCES:
patent: 1300257 (1919-04-01), Felland
patent: 1988255 (1935-01-01), Soons
patent: 2910555 (1959-10-01), Tunstall
patent: 2948258 (1960-08-01), Koechel
patent: 3288385 (1966-11-01), Markakis
patent: 3292170 (1966-12-01), D'Angelo

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