Toy water gun
First Claim
1. A water gun comprising a storage reservoir adapted to expand to a size sufficient to hold a range of liquid quantities and configured to restrict air from being held therein;
- an expandable pressure tank adapted to hold liquid and to expand under induced tension upon introducing liquid in excess of a selected volume therein and thereby exert a force upon the liquid;
a pump for drawing liquid from said storage reservoir and depositing the drawn liquid into said expandable pressure tank;
conduit means for conveying liquid from said expandable pressure tank to ambience; and
control means for controlling the flow of liquid through said conduit means.
1 Assignment
0 Petitions
Accused Products
Abstract
A water gun (10) is provided having a storage tank (18), a expandable pressure tank (19) having an elastic bladder (30) encased within an outer shell (29), and a pump (32) for conveying liquid from the storage tank to the expandable pressure tank. The conveyance of liquid into the expandable pressure tank causes the liquid to be pressurized by the biasing force of the elastic bladder. The pressurized liquid is released through a nozzle (21) coupled to the expandable pressure tank by actuation of a trigger (17). The storage tank may be collapsible to prevent the storage of air therein or be coupled to a fluid selective check valve to prevent air from being pumped into the pressure tank.
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Citations
22 Claims
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1. A water gun comprising a storage reservoir adapted to expand to a size sufficient to hold a range of liquid quantities and configured to restrict air from being held therein;
- an expandable pressure tank adapted to hold liquid and to expand under induced tension upon introducing liquid in excess of a selected volume therein and thereby exert a force upon the liquid;
a pump for drawing liquid from said storage reservoir and depositing the drawn liquid into said expandable pressure tank;
conduit means for conveying liquid from said expandable pressure tank to ambience; and
control means for controlling the flow of liquid through said conduit means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- an expandable pressure tank adapted to hold liquid and to expand under induced tension upon introducing liquid in excess of a selected volume therein and thereby exert a force upon the liquid;
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9. A water gun comprising
a liquid storage reservoir; -
an elastic pressure tank adapted to be expanded and contracted upon changes in the volume of liquid pumped therein; a pump; first conduit means for conveying liquid contained within said storage reservoir to said pump, said first conduit means including fluid sensitive check valve means for restricting the flow of liquids from said pump to said liquid storage reservoir and allowing the flow of gases from said pump to said liquid storage reservoir upon actuation of said pump; second conduit means for conveying liquid from said pump to said elastic pressure tank, said second conduit means including second check valve means for preventing the flow of liquids from said pressure tank to said pump; third conduit means for conveying liquid from said elastic pressure tank to ambience; and control means for controlling the flow of liquid through said third conduit means, whereby liquid within the storage reservoir is pumped into the elastic pressure tank through the first and second conduits thereby forcing the elastic pressure tank to its second configuration so as to pressurize liquid therein which is controllably released from the elastic pressure tank through the third conduit means by actuation of the control means, and whereby the air within the storage reservoir is prevented from being pumped into the pressure tank by the operation of the fluid sensitive check valve means. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A water gun comprising a storage reservoir;
- elastic pressure tank means for exerting pressure on a body of liquid therein;
means for preventing the flow of air from said storage reservoir to said pressure tank;
means for drawing liquid from said storage reservoir and depositing the drawn liquid into said elastic pressure tank means;
conduit means for conveying liquid from said elastic pressure tank means to ambience; and
control means for controlling the flow of liquid through said conduit means. - View Dependent Claims (17, 18, 19, 20, 21, 22)
- elastic pressure tank means for exerting pressure on a body of liquid therein;
Specification