Current limiting circuit and electronic fuse for use in foam inj

Details Current limiting circuit and electronic fuse for use in foam inj Current limiting circuit and electronic fuse for use in foam inj

1996-09-06

1998-06-09

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 23, H02H 504

Patent

active

057644632

ABSTRACT:
A fire extinguishing system in which a calculated quantity of a liquid chemical foamant is introduced into the main water stream being directed at a fire equipped with a protective circuit for limiting the amount of average current flowing within a motor driving a fluid pump used to inject the chemical foamant, in addition to an electronic fuse circuit for automatically shutting off the power being supplied to the low-level electronics.

REFERENCES:
patent: 4324294 (1982-04-01), McLoughlin et al.
patent: 4969076 (1990-11-01), Schutten et al.
patent: 5187653 (1993-02-01), Lorenz
patent: 5222009 (1993-06-01), Scharnick et al.
patent: 5232052 (1993-08-01), Arvidson et al.
patent: 5483136 (1996-01-01), Marcinkiewicz

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