Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Moving solid surface engages material to be sprayed
Patent
1990-01-24
1991-01-08
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Moving solid surface engages material to be sprayed
234570, 234575, 2345812, 222383, 222402, B05B 9043
Patent
active
049829009
ABSTRACT:
A dual function trigger sprayer in which a pump housing is formed with fastening means thereon to secure the housing to a shroud, and has structure at opposite ends defining an inlet chamber and an outlet chamber, respectively. A double ended piston is reciprocable in the housing to effect dispensing of product from a container on which the sprayer is attached, and an outlet valve controls flow from the outlet chamber. A passageway extends through the piston to enable flow between the inlet and outlet chambers, and a restrictor is associated with the passageway to restrict flow between the chambers in such a way that a relatively slow actuation of the piston will result in product flowing from the outlet chamber back into the inlet chamber, defining a child safety feature. Relatively firm, rapid actuation of the piston, on the other hand, will cause the outlet valve to open for dispensing of product. The housing, piston and restrictor may be preassembled as a subassembly for inventory and subsequent assembly with a shroud and actuator. Several unique nose piece valve constructions are also disclosed, and a filter is disposed between the outlet valve and the nozzle to filter particulate matter from the product to prevent blockage of the nozzle.
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patent: 4596344 (1988-06-01), Corsette
patent: 4702419 (1989-10-01), Luchsinger
Kashnikow Andres
Lambert Dennis H.
Weldon Kevin
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