Hemorrhage alarms

Details Hemorrhage alarms Hemorrhage alarms

1977-04-04

1980-03-11

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

128638, 200 6104, 200DIG2, 200 52R, G08B 2100, H01H 3500

Patent

active

041930681

ABSTRACT:
A hemorrhage alarm system having an electrically operated signal device, a source of electrical current, a circuit connecting said current source and signal device, a normally open switch in said circuit and a means swelling on contact with blood and body fluid acting on said switch to close it on contact with blood and body fluid.

REFERENCES:
patent: 2043857 (1936-06-01), Montgomery
patent: 2258554 (1941-10-01), Heyer et al.
patent: 2326557 (1943-08-01), Peirce
patent: 2432367 (1947-12-01), Andresen
patent: 2749536 (1956-06-01), Sperling
patent: 3245068 (1966-04-01), Wegryn et al.

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