Device for applying symbols to protein-containing material

Details Device for applying symbols to protein-containing material Device for applying symbols to protein-containing material

1983-02-10

1985-09-17

Envall, Jr., Roy N.

Electric heating

Metal heating

Of cylinders

219 1057, 219121LV, 219229, 12830313, 128804, H05B 646

Patent

active

045422745

ABSTRACT:
A device for applying marking symbols to an animal's hide, a piece of meat's surface and like protein-containing tissue by locally dielectrically heating the tissue using high frequency electromagnetic energy to thereby dissect the protein structure and produce a mark having a different color than the surrounding tissue. The device comprises a stamping member including a metal symbol electrode having a protruding portion which is applied in use to the protein-containing tissue and an electrically insulating holder, such as a refractory material, in which the electrode is protrudingly mounted; a high frequency generator having a frequency range of from 2 to 22 MHz, most preferably from 2 to 4 MHz, and an output power of from 20 to 1000 Watts; and preferably a switching means for selectively establishing electrical connector between the stamping member and the high frequency generator to thereby send electromagnetic energy into the tissue upon which the protruding portion of the electrode is applied. The electrode remains cold and the operation is therefore painless to a live animal while only minimally altering the meat and hide. An earth connection for the protein-containing tissue is not necessary when the generator's output resistance is 50 Ohms or less.

REFERENCES:
patent: 1995725 (1935-03-01), Wappler
patent: 3916143 (1975-10-01), Farrell

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