US3885739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid cleaning device
Assignee: Individual
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Filing: 1974-01-02
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Granted: 1975-05-27
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Expires: 1994-01-02
Abstract
Abstract In a pressure fluid cleaning device having a pump, a source of fluid, a motor for the pump, a speed control for the motor, a water gun having a pipe with a nozzle and connected to the pump, a fluid dump valve on the pipe and a normally open switch on the gun connected to the speed control; an improved control which includes a first grip depending from the valve including a valve control with a trigger pivotally mounted on the valve. A normally unseated valve assembly is provided within the valve and arranged so that retraction of the trigger closes the valve assembly blocking the dump valve. A second grip mounts the switch and includes a switch control adapted on movement to close the switch. A safety interlock is interposed between the valve control and the switch control so that the latter is actuated only after the valve is closed.
Inventors
- 👤 Phillip E Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:23
CPC Classifications
B; B05; B05B; B05B12/00; B05B9/00; B05B9/01; B05B9/03; B05B9/04; B05B9/0403; B08; B08B; B08B3/00; B08B3/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
298 words
In a pressure fluid cleaning device having a pump connected to a source of fluid and having an outlet, a prime mover driveably connected to said pump, an electrically controlled speed control connected to said prime mover, a water gun having a pipe and an outlet nozzle for ejection of fluid under pressure, a conduit between said pump outlet and pipe, a normally open dump valve on and in communication with the pipe upstream of said nozzle, and a normally open electric switch on the gun for operating said speed control, the improvement comprising: a first grip depending from said pipe; a valve control pivotally mounted on said valve including a depending trigger arranged forward of said grip and having a first inoperative position; a normally unseated valve assembly within said dump valve; said trigger having a second retracted position with said valve control operably engaging and seating said valve assembly cutting off flow through said dump valve; a second grip spaced rearwardly of said first grip secured to and depending from said pipe, said switch being mounted on said second grip; a switch control pivotally mounted on said second grip having a first inoperative position with one end spaced from said switch, and movable to a second position to close said switch; and a safety pin slidably mounted upon said pipe and at its ends interposed between and engaging said valve control and said switch control normally retaining said switch control in its first position; whereby retraction of said trigger to its second position releases said pin so that said switch control may be successively moved to a second position to energize said speed control to shift said prime mover from idling to maximum speed for ejection of fluid through said nozzle at an increased predetermined pressure.
Claim 2
Dependent Claim
298 words
In a pressure fluid cleaning device having a pump connected to a source of fluid and having an outlet, a prime mover driveably connected to said pump, an electrically controlled speed control connected to said prime mover, a water gun having a pipe and an outlet nozzle for ejection of fluid under pressure, a conduit between said pump outlet and pipe, a normally open dump valve on and in communication with the pipe upstream of said nozzle, and a normally open electric switch on the gun for operating said speed control, the improvement comprising: a first grip depending from said pipe; a valve control pivotally mounted on said valve including a depending trigger arranged forward of said grip and having a first inoperative position; a normally unseated valve assembly within said dump valve; said trigger having a second retracted position with said valve control operably engaging and seating said valve assembly cutting off flow through said dump valve; a second grip spaced rearwardly of said first grip secured to and depending from said pipe, said switch being mounted on said second grip; a switch control pivotally mounted on said second grip having a first inoperative position with one end spaced from said switch, and movable to a second position to close said switch; and a safety pin slidably mounted upon said pipe and at its ends interposed between and engaging said valve control and said switch control normally retaining said switch control in its first position; whereby retraction of said trigger to its second position releases said pin so that said switch control may be successively moved to a second position to energize said speed control to shift said prime mover from idling to maximum speed for ejection of fluid through said nozzle at an increased predetermined pressure.
Claim 3
Dependent Claim
29 words
In the pressure fluid cleaning device of claim 1, a support with a shoulder rest spaced rearwardly of said second grip, adjustably secured to and depending from said pipe.
Claim 4
Dependent Claim
123 words
In the pressure fluid cleaning device of claim 1, said dump valve including a body having a bore in communication with said pipe and an apertured seat terminating in an outlet; said valve assembly including an apertured float valve movable in said bore normally spaced at one end from said seat and having a seat at its other end; a control valve guidably mounted in said body extending into said bore normally spaced from the float valve seat; said control valve extending outwardly of said body into engagement with said valve control, whereby when said trigger is manually moved to its second position, said valve control axially moves said control valve to seat against said float valve which successively seats within said body.
Claim 5
Dependent Claim
33 words
In the fluid pressure cleaning device of claim 3, there being an axial passage through said float valve for equalizing fluid pressure on opposite Ends of said float valve and within said bore.
Claim 6
Dependent Claim
31 words
In the pressure fluid cleaning device of claim 1, the mounting of said safety pin including an apertured bracket mounted on and depending from said pipe rearwardly of said valve control.
Claim 7
Dependent Claim
57 words
In the pressure fluid cleaning device of claim 1, the operable connection of said switch to said speed control including a radio signal sending unit connected to said switch; a switch for said speed control; and a radio receiver connected to said speed control switch remote from and responsive to a signal from said radio sending unit.
Claim 8
Dependent Claim
45 words
In the pressure fluid cleaning device of claim 1, the switch control on said second grip including a shoulder control on and extending rearwardly of said switch control adapted for moving the switch control once it is released by said valve control and safety pin.
Claim 9
Dependent Claim
51 words
In the pressure fluid cleaning device of claim 7, the mounting of said safety pin including an apertured bracket secured to and depending from said pipe rearwardly of said valve control receiving one end of said safety pin, the other end of said pin being slidably mounted on said second grip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |