US3598316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fluid-sprayer
Assignee: Individual
•
Filing: 1970-02-25
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Granted: 1971-08-10
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Expires: 1990-02-25
Abstract
Abstract A rotary spray head is disclosed for effecting a washing action on inside surfaces of enclosures or for washing dust from gas or air streams. The head comprises a body mounted for rotation on a spindle and driven by reaction forces created by the effluence of fluid from nozzles on the body. The rotational velocity of the body is controlled by means of control nozzles mounted on the body to issue fluid in a direction counter to the drive nozzles when a free ball mounted in a valve chamber is unseated by the action of centrifugal forces and fluid is discharged from the control nozzles. The rotational velocity of the body may be adjusted by varying the pressure of the fluid supplied to the head or by altering the dimensions of the nozzles and the ball.
Inventors
- 👤 Harold C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:21
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A rotary fluid spray head comprising: a body, a hollow spindle mounting said body for rotation on an axis, first nozzle means mounted on said body for issuing fluid therefrom to impart rotary motion in one direction to said body, second nozzle means mounted on said body for issuing fluid in a direction substantially counter to said first-mentioned direction for retarding the rotary motion of said body, passage means providing fluid communication between said spindle and said first and second nozzle means, and valve means in said passage means for varying the flow of fluid through said second nozzle means in response to changes in the rotational velocity of said body on said axis.
Claim 2
Dependent Claim
114 words
A rotary fluid spray head comprising: a body, a hollow spindle mounting said body for rotation on an axis, first nozzle means mounted on said body for issuing fluid therefrom to impart rotary motion in one direction to said body, second nozzle means mounted on said body for issuing fluid in a direction substantially counter to said first-mentioned direction for retarding the rotary motion of said body, passage means providing fluid communication between said spindle and said first and second nozzle means, and valve means in said passage means for varying the flow of fluid through said second nozzle means in response to changes in the rotational velocity of said body on said axis.
Claim 3
Dependent Claim
113 words
A spray head according to claim 1 wherein said valve means includes a chamber in said body spaced outwardly from said axis, an inlet connecting said chamber to said spindle through said passage means and an outlet connecting said chamber to said second nozzle means through said passage means, means providing a valve seat around said outlet in said chamber, a valve element mounted in said chamber for displacement by centrifugal force outward of said axis, and means acting on said valve member to bias said member inwardly against said centrifugal force, so that seating and unseating of said valve member occurs in response to changes in the rotational velocity of the body.
Claim 4
Dependent Claim
98 words
A spray head according to claim 2 wherein said outlet is located in the bottom of said chamber, said valve member includes a ball, and said biasing means includes an upwardly diverging conical surface surrounding said outlet and engaging said ball, so that when the rotational velocity of the body is below a predetermined limit, the ball extends across the outlet to block fluid flow to the control nozzle, and when the rotational velocity exceeds the predetermined limit, the ball is displaced up the conical surface to expose the outlet and afford fluid flow to the control nozzle.
Claim 5
Dependent Claim
135 words
A spray head according to claim 3 wherein said inlet is located adjacent the top of said chamber, said valve seat means includes a recess surrounding said outlet and an annular seat mounted in said recess, said annular seat having a central aperture in registry with said outlet and being closely spaced from the bottom of said ball when said ball is engaged against said conical surface and extends across the aperture in said seat, and including a series of slots in said conical surface providing fluid communication between the top of said chamber and the space between said ball and said valve seat, so that fluid pressure is equalized on the top and bottom of the ball to increase the responsiveness of the valve means to changes in the rotational velocity of the body.
Claim 6
Dependent Claim
56 words
A spray head according to claim 1 wherein said second nozzle means is located outwardly of said axis a distance greater than the corresponding distance of said first nozzle means, so that reaction forces created by the effluence of fluid from the second nozzle means applies maximum torque to the body for retarding its rotational velocity.
Claim 7
Dependent Claim
127 words
A spray head according to claim 1 wherein said body is elongated and symmetrical in a direction transverse to its rotational axis and having opposite ends and sides, said first nozzle means including a pair of orifices carried by said sides for issuing fluid in substantially opposite directions with respect to said rotational axis to impart rotation to said body in said one direction, said second nozzle means including a pair of orifices carried in said ends for issuing fluid in substantially opposite directions with respect to said axis to impart rotation to said body counter to said one direction, said orifices in said first nozzle means having transverse slots inclined with respect to said rotational axis to cause fluid issuing therefrom to foRm a fan-shaped spray.
Claim 8
Dependent Claim
76 words
A spray head according to claim 1 wherein said body has a bore coaxial with said rotational axis, a sleeve mounted in said bore, said sleeve rotatably receiving said spindle, one end of said spindle having a head engaging axially against said sleeve and the other end of said spindle having external threads, and an internally threaded packing nut threadedly engaged on said external threads for limiting axial displacement of said body relative to said spindle.
Claim 9
Dependent Claim
123 words
A spray head according to claim 1 wherein first nozzle means is disposed in a plane normal to said rotational axis and said second nozzle means is disposed in a parallel plane spaced therefrom, said passage means including a series of lateral passages in said body in fluid communication with said first nozzle means and a like series of lateral passages in said body in fluid communication with said second nozzle means, a peripheral groove in said spindle in registry with said first-mentioned series and said second-mentioned series of lateral passages, and ports in said spindle providing fluid communication between said grooves and the interior of said spindle, so that fluid is continuously supplied to the nozzle means during rotation of the body.
Claim 10
Dependent Claim
30 words
A spray head according to claim 8 wherein said body is of stainless steel and said sleeve is of fluorinated hydrocarbon so that the body resists deterioration by corrosive fluids.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |