Spray device and method

Details Spray device and method Spray device and method

2007-02-27

2007-02-27

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

Moving solid surface engages material to be sprayed

C239S533100, C222S129000, C128S200140, C604S239000

Reexamination Certificate

active

11347902

ABSTRACT:
A spray device including a barrel having a bypass and at least two spaced stoppers defining a first and second chambers and a spray nozzle. Movement of the first stopper drives the second stopper to the bypass and the fluid in the first chamber into the second chamber, mixing the fluid and substance. Continued movement of the first and second stoppers drives the mixture through the spray nozzle. The spray device may include a third stopper having a body in the tubular barrel which is moved toward the spray nozzle. The movement of the third stopper provides space for the mixture and prevents unpressurized fluid from flowing through the spray nozzle. The third stopper includes an axial stalk. The stalk may be deformable or the stalk may be separate from the body and the spray nozzle includes a longitudinal internal passage which provides communication with the spray port.

REFERENCES:
patent: 2688967 (1954-09-01), Huber
patent: 4888002 (1989-12-01), Braginetz et al.
patent: 5588799 (1996-12-01), Kreitmeier
patent: 5865799 (1999-02-01), Tanaka et al.
patent: 5944698 (1999-08-01), Fischer et al.

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