Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Drip prevention
Patent
1995-04-11
1997-04-15
Walczak, David J.
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
Drip prevention
141192, 137847, 137855, 222108, 239120, 239571, B65B 104, B65B 304, B67C 300
Patent
active
056200323
ABSTRACT:
An improved non-drip nozzle valve which can be retro-fitted onto existing fuel dispensing nozzles comprises an expanding integral wire frame made from two spaced, interconnected C-shaped springs. Once inserted into the throat of the fuel dispensing nozzle, the C-shaped springs expand the frame to engage the inner wall of the nozzle. Each C-shaped portion of the frame is provided with a rubber flap valve half. The two halves of the flap valve overlap each other when the fuel flow is discontinued to prevent any remaining fuel from dripping or spilling out of the end of the nozzle. When the fuel is being pumped, the flow pressure is great enough to unseat the flap valve halves allowing fuel to freely flow past the valve.
REFERENCES:
patent: 2446571 (1948-08-01), Browne
patent: 3923425 (1975-12-01), Porter et al.
patent: 4213488 (1980-07-01), Pyle
patent: 4556093 (1985-12-01), Jones
patent: 4846836 (1989-07-01), Reich
patent: 5377729 (1995-01-01), Reep
Litman Richard C.
Maust Timothy L.
Walczak David J.
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