Oil sprayer with hand operated air pump
AssigneeProgressive International Corporation
InventorsMichael W. K. Young, Jochen Schapers, Wei Young
Life of this patent
Estimating the term…
Abstract
A liquid sprayer incorporating an air pump to force pressurized air into the interior of a receptacle. The air pump is operated, by stroking of a cover. The cover has an opening allowing finger access to the plunger of a spray nozzle in one rotated position of the cover, the cover being held in that position. In another rotated position the cover is released for stroking. A piston on the cover projects into a central tubular portion on the cap with valving sealing allowing air to be drawn past the piston and forced into the receptacle. The spray nozzle is offset from the tubular portion and the plunger is accessible through the cover without removing the same.
Claims7
A liquid sprayer comprising:
- a receptacle defining an interior space for receiving a liquid to be sprayed, said receptacle having an open top to allow liquid to be introduced into said interior space;
- a removable cap mounted on said top to close off said interior space;
- a cover slidably received over the cap;
- an air pump formed by components on said cap and cover operated by stroking of said cover on said cap to force atmospheric air under pressure into said interior space, said air pump including valving components retaining pressurized air within said interior space;
- a spray nozzle assembly mounted in said cap selectively allowing spraying of liquid from said interior space under air pressure developed by said air pump within said interior space;
- said spray nozzle including a plunger protruding above said cap;
- said cover having an opening therein allowing finger access to said plunger;
- said cover having features interfit to prevent stroking in at least one rotated position of said cover, said opening in said cap aligned with said spray nozzle plunger when said cover is in said rotated position, said cover rotatable to another position whereat said features are not interfit to allow said stroking of said cover.
Dependencies are inferred from the claim text.