US4723710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for spraying mixtures of solid and liquid materials
Assignee: High Pressure Tech Corp
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Filing: 1986-08-08
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Granted: 1988-02-09
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Expires: 2006-08-08
Abstract
Abstract An apparatus for spraying mixtures of solid and liquid materials includes a tank; a pump; an inlet line from the tank to the pump; a return line from the pump to the tank; a spraying nozzle; a nozzle supply line from the pump to the nozzle; a nozzle to the tank; and first and second valves for regulating the respective amounts of mixtures to be fed either to the nozzle, the nozzle supply line, the nozzle return line or the return line from the pump to the tank. By providing two separate valves and return lines, one at the pump and one at the nozzle, constant agitation of the tank contents is maintained and clogging anywhere in the system, particularly in the nozzle hose, is avoided.
Inventors
- 👤 II James C. Lucore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:09
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/0403; A; A01; A01C; A01C7/00; A01C7/004; A01M; A01M7/00; A01M7/0089; A01M7/0092; B05B15/00; B05B15/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
200 words
An apparatus for spraying mixtures of solid and liquid materials onto any desired area, comprising: a tank; a pump; an inlet line from said tank to said pump; a return line from said pump to said tank; a discharge nozzle; a nozzle supply line from said pump to said discharge nozzle; first valve means for regulating the respective amounts of mixture being fed to said return line and to said nozzle supply line; a nozzle return line from said nozzle supply line to said tank, said nozzle return line intersecting said nozzle supply line at said nozzle; and second valve means, at said intersection of said nozzle return line and said nozzle supply line, for regulating the respective amounts of mixture being fed to said discharge nozzle and to said nozzle return line, said second valve means being regulatable among a first configuration at which all flow in said nozzle supply line enters said nozzle, none being recycled through said nozzle return line, a second configuration at which all flow in said nozzle supply line enters said nozzle return line, none entering said nozzle, and intermediate configurations permitting varying ratios of flow to said nozzle and said nozzle return line.
Claim 2
Independent Claim
200 words
An apparatus for spraying mixtures of solid and liquid materials onto any desired area, comprising: a tank; a pump; an inlet line from said tank to said pump; a return line from said pump to said tank; a discharge nozzle; a nozzle supply line from said pump to said discharge nozzle; first valve means for regulating the respective amounts of mixture being fed to said return line and to said nozzle supply line; a nozzle return line from said nozzle supply line to said tank, said nozzle return line intersecting said nozzle supply line at said nozzle; and second valve means, at said intersection of said nozzle return line and said nozzle supply line, for regulating the respective amounts of mixture being fed to said discharge nozzle and to said nozzle return line, said second valve means being regulatable among a first configuration at which all flow in said nozzle supply line enters said nozzle, none being recycled through said nozzle return line, a second configuration at which all flow in said nozzle supply line enters said nozzle return line, none entering said nozzle, and intermediate configurations permitting varying ratios of flow to said nozzle and said nozzle return line.
Claim 3
Dependent Claim
15 words
An apparatus in accordance with claim 1, wherein said mixture comprises seed, mulch and water.
Claim 4
Dependent Claim
16 words
An apparatus in accordance with claim 1, wherein said first valve means comprises a gate valve.
Claim 5
Dependent Claim
47 words
An apparatus in accordance with claim 1, wherein said first valve means comprises two separate and adjacent gate valves, one in said nozzle supply line downstream of the intersection with said return line and one in said return line near the intersection with said nozzle supply line.
Claim 6
Dependent Claim
16 words
An apparatus in accordance with claim 1, wherein said second valve means comprises a gate valve.
Claim 7
Dependent Claim
52 words
An apparatus in accordance with claim 1, wherein said second valve means comprises two separate and adjacent gate valves, one in said nozzle supply line immediately upstream of the intersection with said nozzle return line and one in said nozzle return line immediately downstream of the intersection with said nozzle supply line.
Claim 8
Dependent Claim
16 words
An apparatus in accordance with claim 1, wherein said tank and said pump are vehicle mounted.
Claim 9
Dependent Claim
19 words
An apparatus in accordance with claim 1, wherein said nozzle return line enters the top region of said tank.
Claim 10
Dependent Claim
33 words
An apparatus in accordance with claim 1, wherein said inlet line from said tank to said pump, further includes an inlet end, said inlet end being positioned near the bottom of said tank.
Claim 11
Dependent Claim
36 words
An apparatus in accordance with claim 1, wherein said return line from said pump to said tank has an outlet end, said outlet end being positioned to enter said tank from the underside of said tank.
Claim 12
Dependent Claim
35 words
An apparatus in accordance with claim 1, wherein said first valve means includes protection means for preventing said first valve means from completely closing off said return line, whereby some degree of recycle constantly occurs.
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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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |