Double action trigger sprayer

Details Double action trigger sprayer Double action trigger sprayer

1996-03-25

1998-01-27

Kaufman, Joseph

Dispensing

With discharge assistant

With bypass or return to supply

2223831, 239333, B67D 540

Patent

active

057114595

ABSTRACT:
The present invention is a continuous action trigger sprayer for spraying liquid material. It includes a main housing having connectors to a container and having an operation cylinder and a liquid chamber. It also includes a pumping element which is within the operation cylinder and has a valve seat, a one-way valve and a pumping rod, which permits liquid material to pass therethrough in a relative direction toward a spray nozzle, but not toward the liquid chamber. There is a relief valve having a seat with an opening therethrough and a relief passage to bleed liquid back to the container and which cooperates with the pumping element. There is also a trigger which moves the pumping element.

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patent: 4079865 (1978-03-01), Kutik
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patent: 4830046 (1989-05-01), Holt
patent: 5465880 (1995-11-01), Glynn
patent: 5575407 (1996-11-01), Foster et al.
patent: 5622287 (1997-04-01), Glynn

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