Signal apparatus

Details Signal apparatus Signal apparatus

1989-12-04

1990-12-18

Cuchlinski, Jr., William A.

Signals and indicators

Alarms

Liquid level

116155, 116167, 248125, G01F 2300, G10K 110

Patent

active

049778501

ABSTRACT:
A signal apparatus comprising a post-mountable arm adapted at one end to be mounted on a vertical stand post and having provided at the other end thereof a bell adapted to be struck by a counter-weight mounted on one end of a balance beam when blood reaches a predetermined level in a blood collection bag hung from the other end of the balance beam which is mounted on the said post below the said arm, and a hook adapted to receive a second bag removably hung thereon.

REFERENCES:
patent: 44447 (1864-09-01), O'Donnell
patent: 531557 (1894-12-01), Paetow
patent: 954423 (1910-04-01), Cramer
patent: 1289618 (1918-12-01), Billings
patent: 1441191 (1923-01-01), Weiss
patent: 2143706 (1939-01-01), Mathey
patent: 2212620 (1940-08-01), Scully et al.
patent: 2897853 (1959-08-01), Anstine
patent: 3115152 (1963-12-01), Goldberg et al.
patent: 3557789 (1971-01-01), Poitras
patent: 4678049 (1987-07-01), Gummere et al.

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