Dispensing – Drip – leakage or waste catching or disposal – Return to main supply
Patent
1977-11-14
1979-03-27
Spar, Robert J.
Dispensing
Drip, leakage or waste catching or disposal
Return to main supply
222189, 222385, 239331, 417541, B05B 1102
Patent
active
041461550
ABSTRACT:
A pumping system is disclosed in which a storage compartment formed by a spring-loaded piston and cylinder assembly cooperates with a trigger actuated, spring loaded piston and cylinder assembly to store some product during a pressure stroke and discharge that product on a subsequent intake stroke to maintain a stream or spray issuing from the system. In a preferred embodiment, the trigger is part of a lever so constructed as to apply to the trigger actuated piston and cylinder assembly a force which is greater than the force applied to the trigger by the finger of a person. The lever projects outwardly beyond the outlet orifice of the pumping system and forms a ramp and opening for returning drips from the outlet orifice to the trigger actuated piston and cylinder assembly and ultimately to the container. The storage compartment preferably includes a strainer which strains product flowing through the storage compartment in order to inhibit clogging of the outlet orifice of the pumping system. A vent structure is also provided which includes a guide for guiding the trigger actuated piston and cylinder assembly to prevent distortion of a resilient seal of the vent structure.
REFERENCES:
patent: 2974880 (1961-03-01), Stewart et al.
patent: 3228571 (1966-01-01), O'Donnell et al.
patent: 3908870 (1975-09-01), Nozawa et al.
patent: 3927834 (1975-12-01), Tada
patent: 3967762 (1976-07-01), Machon
patent: 4022354 (1977-05-01), Kotuby
patent: 4079865 (1978-03-01), Kutik
patent: 4081111 (1978-03-01), Sandow
Cecil Howard E.
Kutik Louis F.
Security Plastics Inc.
Silverberg Fred A.
Spar Robert J.
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