Backpack sprayer with an expandable accumulator chamber

Fluid sprinkling – spraying – and diffusing – Body or animal carried – Hand manipulated discharge means

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

239373, B05B 908

Patent

active

056718845

ABSTRACT:
An improved backpack sprayer, comprising a supply tank, an expandable accumulator, a pump mechanism, an intake valve, a discharge valve, and a spray wand with a nozzle. The expandable accumulator is preferably an elastomeric bladder, the function of which is to accumulate fluid from the supply tank under pressure. The volume of the bladder expands as pressurized fluid enters from the pump mechanism. As with most backpack sprayers, the pump mechanism is positioned adjacent to the bottom of the supply tank and is in fluid communication with the tank. The function of the pump mechanism is to pump fluid from the supply tank into the bladder. An intake valve, associated with an inlet opening of the bladder, enables a unidirectional flow of liquid from the pump to the bladder. Discharge of fluid from the bladder also occurs through the inlet opening upon the opening of a discharge valve. The discharge valve is normally closed to permit the bladder to accumulate a desired quantity of fluid. In the preferred embodiment, the discharge valve is hand-operated and located in a handle attached to a spray wand and nozzle. When the discharge valve is opened, the discharged fluid is directed from the accumulator and channeled through a hose, trigger handle, spray wand and spray nozzle.

REFERENCES:
patent: 1297865 (1919-03-01), Kirkwood
patent: 1520502 (1924-12-01), Lundblad
patent: 1902548 (1933-03-01), Fenwick, Jr.
patent: 2162057 (1939-06-01), Brandt et al.
patent: 2545319 (1951-03-01), Sundholm
patent: 2653848 (1953-09-01), Lee
patent: 3123254 (1964-03-01), Rabbyet et al.
patent: 3452905 (1969-07-01), Micallef
patent: 3519167 (1970-07-01), Rast
patent: 3746261 (1973-07-01), Nozawa et al.
patent: 3767078 (1973-10-01), Gortz et al.
patent: 3995774 (1976-12-01), Cooprider et al.
patent: 4142653 (1979-03-01), Masciaet et al.
patent: 4167941 (1979-09-01), Capra et al.
patent: 4222500 (1980-09-01), Capra et al.
patent: 4241853 (1980-12-01), Pauls et al.
patent: 4251032 (1981-02-01), Werding
patent: 4324350 (1982-04-01), Thompson
patent: 4419096 (1983-12-01), Leeper et al.
patent: 4423829 (1984-01-01), Katz
patent: 4735239 (1988-04-01), Salmon et al.
patent: 4787560 (1988-11-01), DeYoreo
patent: 4867208 (1989-09-01), Fitzgerald et al.
patent: 4875508 (1989-10-01), Burke, II et al.
patent: 4953753 (1990-09-01), Gortz
patent: 4955512 (1990-09-01), Sharples
patent: 5080652 (1992-01-01), Sancoff et al.
patent: 5105983 (1992-04-01), Sancoff et al.
patent: 5111971 (1992-05-01), Winer
patent: 5127554 (1992-07-01), Loychuk
patent: 5137175 (1992-08-01), Kowalski et al.
patent: 5167631 (1992-12-01), Thompson et al.
patent: 5180085 (1993-01-01), Schmid
patent: 5183185 (1993-02-01), Hutcheson et al.
patent: 5187498 (1993-02-01), Burger
patent: 5240151 (1993-08-01), Worm
patent: 5303853 (1994-04-01), Nye
patent: 5335853 (1994-08-01), Wirz
A Brochure of D.B. Smith & Co., Inc.'s Field King Backpack Sprayer--Royal Treatment For Roundup No date.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Backpack sprayer with an expandable accumulator chamber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Backpack sprayer with an expandable accumulator chamber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backpack sprayer with an expandable accumulator chamber will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2251918

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.