Claims
- 1. A high pressure fluid spray gun comprising:
- a discharge nozzle;
- a source of high pressure fluid;
- a low pressure dump;
- a valve body for communicating said source to either said dump or said nozzle;
- a pair of hand held triggers; and
- said valve body being configured such that if an operator pulls on both said triggers said source communicates with said nozzle, and if an operator releases either of said triggers said source communicates with said dump.
- 2. A valve assembly for a pressurized fluid discharge device comprising:
- a valve body having a high pressure passageway and a low pressure passageway;
- an inlet for delivering a fluid to said passageways;
- a high pressure outlet for discharging fluid at a high pressure from said high pressure passageway;
- a low pressure outlet for discharging fluid at a pressure lower than said high pressure from said low pressure passageway;
- a first passage interconnecting said high and low pressure passageways;
- a second passage interconnecting said high and low pressure passageways, said second passage spaced apart from said first passage;
- a first valve seat and a first valve moveable with respect to said first valve seat for blocking said first passage when seated on said first valve seat; and
- a second valve seat and a second valve moveable with respect to said second valve seat for blocking said second passage when seated on said second valve seat;
- a first hand held actuator for seating said first valve against said first valve seat; and
- a second hand held actuator for seating said second valve against said second valve seat whereby simultaneous seating of said valves against said valve seats by said actuators causes said fluid to flow from said inlet, through said high pressure passageway, and out said high pressure outlet, and unseating either of said valves from said valve seats by releasing at least one of said actuators causes said fluid to flow from said inlet, through at least one of said passages to said low pressure passageway, and out said low pressure outlet.
- 3. A valve assembly as set forth in claim 2 including a first spring supported by said first valve and a second spring supported by said second valve, said first and second springs having a predetermined spring force for biasing said valves to said unseated position.
- 4. A valve assembly as set forth in claim 3 wherein said first and second valves are cylindrical pins having valve heads of larger diameter than said valves for supporting said first and second springs.
- 5. A valve assembly as set forth in claim 4 wherein said first and second springs are supported on said valve body at one end and abut said valve heads at an opposite end, respectively, such that said first and second springs are compressible between said valve heads and said valve body.
- 6. A valve assembly as set forth in claim 4 including a first valve head supported on said first valve and a second valve head supported on said second valve wherein said first and second actuators exert a force greater than a spring force on said valve heads for seating said valves against said valve seats.
- 7. A valve assembly as set forth in claim 1 wherein said first and second valves are disposed on opposites sides of said valve.
- 8. A valve assembly as set forth in claim 1, wherein said first and second actuators each include handles spaced from each other by 90.degree. relative to a control axis of said gun.
- 9. A pressurized fluid discharge device comprising:
- a main body;
- a high pressure conduit, supported by said main body and defining a central axis, said high pressure conduit having a high pressure outlet;
- a valve assembly housed in said main body and having a high pressure passageway, a low pressure passageway, a first passage interconnecting said high and low pressure passageways, a second passage interconnecting said high and low pressure passageways, a first valve moveable with respect to said main body and having a first valve seat, and a second valve moveable with respect to said main body and having a second valve seat, said first valve for blocking said first passage when seated on said first valve seat and said second valve for blocking said second passage when seated on said second valve seat;
- an inlet for delivering a fluid to said valve assembly;
- a first grip supported by said main body and extending out radially from said central axis, said first grip having a first actuator;
- a second grip supported by said main body and extending out radially from said central axis, said second grip spaced apart from said first grip and having a second actuator wherein said first and second actuators are moveable between a high pressure position and a low pressure position; and
- a low pressure conduit supported by said main body and having a low pressure outlet wherein said fluid flows from said inlet to said high pressure outlet when said first and second actuators are simultaneously positioned in said high pressure position causing said first and second passages to be blocked by said first and second valves, respectively, and said fluid flows from said inlet to said low pressure outlet when said at least one actuator is positioned in said low pressure position causing at least one passage to open between said high and low pressure passageways.
- 10. A pressurized fluid discharge device as set forth in claim 9 wherein said first grip is located at a position ninety degrees or less about said central axis from said second grip.
- 11. A pressurized fluid discharge device as set forth in claim 10 wherein said first and second grips are handles having first and second triggers, respectively, said first and second triggers for controlling said first and second actuators between said high and low pressure positions.
- 12. A pressurized fluid discharge device as set forth in claim 9 wherein said first and second valves are supported by first and second springs having a predetermined spring force wherein said first and second actuators exert a force greater than said spring force against said valve heads for seating said valves against said valve seats resulting in fluid flow from said inlet to said high pressure outlet.
- 13. A pressurized fluid discharge device as set forth in claim 12 including a first flange surrounding said first valve and a second flange surrounding said second valve, said first and second flanges of greater diameter than said valves, wherein said valves are unseated when said spring force is greater than said force of said actuators against said valve heads causing said first and second springs to react against said first and second flanges, respectively, causing said first and second passages to open and resulting in fluid flow from said inlet to said low pressure outlet.
- 14. A pressurized fluid discharge device as set forth in claim 13 wherein said first and second springs are supported on said valve body at one end and abut said valve heads at an opposite end such that said first and second springs are compressible between said valve heads and said valve body.
- 15. A pressurized fluid discharge device as set forth in claim 9 wherein said low pressure conduit is parallel to said central axis.
- 16. A pressurized fluid discharge device as set forth in claim 9 wherein a padded shoulder portion is provided on an opposed side of said valve from a high pressure outlet.
Parent Case Info
This application claims benefit of U.S. Provisional application No. 60/056,901, filed Aug. 22, 1997.
US Referenced Citations (8)