Dual function pressure/vacuum switch

Details Dual function pressure/vacuum switch Dual function pressure/vacuum switch

1998-08-20

1999-11-30

Douglas, Steven O.

Fluent material handling, with receiver or receiver coacting mea

Automatic control of flow cutoff or diversion

Level or overflow responsive

141209, 141392, 141225, 141226, B65B 130

Patent

active

059924799

ABSTRACT:
A fuel nozzle with both a Venturi shut-off mechanism and an electronic pressure switch shut-off mechanism. The increased reliability can be obtained at minimal increased cost if the two pressure-activated mechanisms are combined in a single housing so that each sensing port in effect becomes the reference pressure for the other.

REFERENCES:
patent: 3946773 (1976-03-01), Hansel
patent: 4913200 (1990-04-01), Carow
patent: 5184309 (1993-02-01), Simpson et al.
patent: 5307848 (1994-05-01), Murray

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