US3704553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle control valve for sandblasting and like spraying apparatus
Assignee: Individual
•
Filing: 1970-10-16
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Granted: 1972-12-05
•
Expires: 1990-10-16
Abstract
Abstract A gate valve is interposed in the delivery line between a spray nozzle and a source of air under pressure, in an area of minimum flow velocity. A threaded opening through the valve body intercepts the valve slide and connects opposed coupling members which slidably confine the slide between them. In one embodiment the coupling members are a nozzle and a hose collar, and the slide is manually adjustable. In a second embodiment the coupling members are a pair of adapters which connect the valve between sections of the delivery line, and the valve slide is adjustable by a power unit driven by air under pressure from said source.
Inventors
- 👤 Laverne F Hehr
- 👤 Raymond E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:51
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
In combination with sandblasting and like spraying apparatus including a nozzle having inlet and outlet ends, a source of fluid pressure, and delivery tube means communicating the nozzle with the source of fluid pressure, a nozzle control valve comprising a. a unitary valve body having therethrough a longitudinal bore having upstream and downstream ends and a transverse valve guide opening substantially normal to and intercepting said bore intermediate the ends thereof, b. a slide member mounted slidably in said guide opening and having an aperture therethrough, the slide member being reciprocative in the guide opening between one position of adjustment wherein the said aperture registers with said bore and another position of adjustment wherein the slide member intercepts and closes said bore, and c. coupling means on the body for communicating the upstream end of the bore with the source of fluid pressure and the downstream end of the bore with the inlet end of the nozzle.
Claim 2
Dependent Claim
157 words
In combination with sandblasting and like spraying apparatus including a nozzle having inlet and outlet ends, a source of fluid pressure, and delivery tube means communicating the nozzle with the source of fluid pressure, a nozzle control valve comprising a. a unitary valve body having therethrough a longitudinal bore having upstream and downstream ends and a transverse valve guide opening substantially normal to and intercepting said bore intermediate the ends thereof, b. a slide member mounted slidably in said guide opening and having an aperture therethrough, the slide member being reciprocative in the guide opening between one position of adjustment wherein the said aperture registers with said bore and another position of adjustment wherein the slide member intercepts and closes said bore, and c. coupling means on the body for communicating the upstream end of the bore with the source of fluid pressure and the downstream end of the bore with the inlet end of the nozzle.
Claim 3
Dependent Claim
62 words
The combination of claim 1 wherein the coupling means includes internal threads on the body surrounding said bore, and threaded connector means engaging said internal threads on the body on opposite sides of the slide member and slidably engaging the opposed faces of the slide member to restrict the passage of fluid pressure radially outward between said slide member and connector means.
Claim 4
Dependent Claim
33 words
The combination of claim 2 wherein the threaded connector means comprises a threaded inlet end portion of the nozzle and a threaded collar connected to the outlet end of the delivery tube means.
Claim 5
Dependent Claim
43 words
The combination of claim 1 wherein the delivery tube means includes a plurality of interconnected sections and the coupling means comprises a pair of adapters connecting the adjacent free ends of sections of the delivery tube means to opposite ends of said bore.
Claim 6
Dependent Claim
29 words
The combination of claim 1 including fluid pressure motor means having reciprocative output means connected to the slide member for reciprocating the latter selectively between said positions of adjustment.
Claim 7
Dependent Claim
51 words
The combination of claim 5 wherein the source of fluid pressure is a container for air under pressure, the fluid pressure motor is an air motor, and control means connects the air motor to the container for activating the motor selectively to reciprocate the slide member between said positions of adjustment.
Claim 8
Dependent Claim
61 words
The combination of claim 6 wherein the delivery tube means is flexible and of substantial length, whereby the nozzle may be moved to positions remote from the container, the air motor is located adjacent the container, and the control means includes adjustable valve means mounted adjacent the nozzle, and flexible tubing communicates the valve means with the container and air motor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |