US4119110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid purging system
Assignee: Milacron Inc
•
Filing: 1977-06-29
•
Granted: 1978-10-10
•
Expires: 1997-06-29
Abstract
Abstract A method of purging a particulate suspension fluid from a fluid system during system shut-down utilizes an unparticulated constituent as the purging fluid. The unparticulated constituent remains in the system during shut-down periods and is subsequently converted to a composite fluid of the type it was previously used to purge.
Inventors
- 👤 Kirby Lee Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:15
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/10; B01F35/145; B01F35/1452; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0419; Y10T137/4238; Y10T137/4245; Y10T137/4259; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A method of flushing a portion of a liquid reaction molding system containing a process liquid with particulate suspensions, which comprises: (a) discontinuing flow of a particulate suspension liquid into a portion of the liquid reaction molding system from a particulate fluid source; (b) flushing the particulate suspension liquid with a similar unparticulated liquid prior to system shutdown; (c) reconvening the flow of particulate suspension liquid and flushing the similar unparticulated liquid with particulate suspension liquid prior to system start-up; (d) mixing the flushed unparticulated fluid with process fluid from the particulate fluid source; and (e) adjusting the particulate content of the fluid source.
Claim 2
Independent Claim
104 words
A method of flushing a portion of a liquid reaction molding system containing a process liquid with particulate suspensions, which comprises: (a) discontinuing flow of a particulate suspension liquid into a portion of the liquid reaction molding system from a particulate fluid source; (b) flushing the particulate suspension liquid with a similar unparticulated liquid prior to system shutdown; (c) reconvening the flow of particulate suspension liquid and flushing the similar unparticulated liquid with particulate suspension liquid prior to system start-up; (d) mixing the flushed unparticulated fluid with process fluid from the particulate fluid source; and (e) adjusting the particulate content of the fluid source.
Claim 3
Independent Claim
117 words
A method of purging a particulated liquid process reagent from a predetermined portion of a liquid reaction molding system for shut-down and start-up, comprising the steps of: (a) flushing the liquid particulated process reagent from the predetermined portion of the system with a similar unparticulated reagent prior to system shutdown; (b) storing the unparticulated reagent in the predetermined portion of the system during system shutdown; (c) subsequently flushing the unparticulated reagent from the predetermined portion of system prior to system startup; (d) collecting the flushed reagent from step (c); (e) adding compensatory amounts of particulate matter to the collected reagent; and (d) jointly utilizing the compensated reagent with the process reagent in the liquid reaction molding system.
Claim 4
Independent Claim
117 words
A method of purging a particulated liquid process reagent from a predetermined portion of a liquid reaction molding system for shut-down and start-up, comprising the steps of: (a) flushing the liquid particulated process reagent from the predetermined portion of the system with a similar unparticulated reagent prior to system shutdown; (b) storing the unparticulated reagent in the predetermined portion of the system during system shutdown; (c) subsequently flushing the unparticulated reagent from the predetermined portion of system prior to system startup; (d) collecting the flushed reagent from step (c); (e) adding compensatory amounts of particulate matter to the collected reagent; and (d) jointly utilizing the compensated reagent with the process reagent in the liquid reaction molding system.
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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |