Patent US3857513A successfully refreshed from Google Patents.
US3857513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-automatic color change system for paint spray installation
Assignee: Gyromat Corp
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Filing: 1970-11-09
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Granted: 1974-12-31
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Expires: 1990-11-09
Abstract
Abstract A semi-automatic color change system for a paint spray installation is disclosed herein. The system includes selectively actuatable valving and controls uniquely arranged therefor in a manner to provide for the delivery of paint to a spray gun nozzle under comparatively low pressure during painting stages and to provide for the delivery of solvent to the same nozzle under comparatively high pressure during solvent flush or purge stages. Additionally, provision is made to discharge automatically or to dump paint in the spray nozzle and the paint supply lines into a reclaim receptacle prior to a solvent purge and preparatory to a ''''color-change'''' stage. The ''''dumping'''' is effected at high pressures. The selected employment of high pressures enables the purging and the recharging of the system with a new color paint to take place with great rapidity.
Inventors
- 👤 R Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/14; B05B12/149; B05B15/00; B05B15/50; B05B15/55
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A semi-automatic color change system for a paint spray installation having predetermined color change cycles having multiple stages including at least one solvent flush stage, said system comprising a. plural fluid delivery lines including at least two paint lines and one solvent line; b. a valve controlled paint spray nozzle; c. a fluid supply line communicating between said plural fluid delivery lines and said spray nozzle; d. a fluid pressure regulator interposed in said fluid supply line and being selectively controllable between first and second conditions in which fluid leaves said regulator at comparatively high pressures and comparatively low pressures, respectively; e. fluid pressure control means for said fluid pressure regulator to select the first or second of said conditions of operation in accordance with predetermined stages of said cycles; and f. selective fluid delivery control means permitting the communication with said supply line of only one of said fluid delivery lines at a time.
Claim 2
Dependent Claim
155 words
A semi-automatic color change system for a paint spray installation having predetermined color change cycles having multiple stages including at least one solvent flush stage, said system comprising a. plural fluid delivery lines including at least two paint lines and one solvent line; b. a valve controlled paint spray nozzle; c. a fluid supply line communicating between said plural fluid delivery lines and said spray nozzle; d. a fluid pressure regulator interposed in said fluid supply line and being selectively controllable between first and second conditions in which fluid leaves said regulator at comparatively high pressures and comparatively low pressures, respectively; e. fluid pressure control means for said fluid pressure regulator to select the first or second of said conditions of operation in accordance with predetermined stages of said cycles; and f. selective fluid delivery control means permitting the communication with said supply line of only one of said fluid delivery lines at a time.
Claim 3
Dependent Claim
48 words
The color change system of claim 1, in which a. said selective fluid delivery control means includes remotely controlled fluid valves interposed in each of said fluid delivery lines; b. all of said valves communicating directly with a manifold interposed between said valves and said fluid pressure regulator.
Claim 4
Dependent Claim
17 words
The color change system of claim 2, in which a. said valves are pneumatically or electrically actuated.
Claim 5
Dependent Claim
23 words
The color change system of claim 2, in which a. said fluid pressure regulator is electrically controlled between said first and second conditions.
Claim 6
Dependent Claim
92 words
The color change system of claim 1, which further includes a. a reclaim tank; a fluid discharge line communicating between said spray nozzle and said reclaim tank; c. a selectively actuatable dump valve interposed in said fluid discharge line; d. dump control means opening said dump valve for predetermined limited durations when said fluid pressure regulator is in a first condition and when one of said valves is arranged to admit air under high pressure into said fluid delivery lines; e. whereby paint is reclaimed from said nozzle under comparatively high pressure.
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |