Patent US2878098A successfully refreshed from Google Patents.
US2878098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for preventing evaporation from reservoirs or the like
Assignee: Individual
•
Filing: 1957-07-23
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Granted: 1959-03-17
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Treloar Howard Archibald
- 👤 Dunstan Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:23
CPC Classifications
E; E02; E02B; E02B3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
6. A DEVICE FOR DISPENSING AN EVAPORATION PREVENTING SUBSTANCE ONTO THE EXPOSED SURFACE OF A BODY OF WATER; COMPRISING A NON-ROTATABLE UPSTANDING SUPPORT ADAPTED TO. BE MOUNTED AT THE BANK OF THE BODY OF WATER, A FLOAT MOVABLE VERTICALLY WITH RESPECT TO SAID NON-ROTATABLE SUPPORT AND DEPATED TO BE IMMERSED IN THE BODY OF WATER SO THAT THE VERTICAL POSITION OF SAID FLOAT IS DETERMINED BY THE LEVEL OF THE EXPOSED SURFACE OF THE BODY OF WATER, A SOURCE OF THE EVAPORATION PREVENTING SUBSTANCE LOCATED ON SHORE, CONDUIT MEANS LEADING FROM SAID SOURCE AND TERMINATING IN A A DISCHARGE SECTION WHICH IS MOVABLE VERTICALLY WITH SAID FLOAT SO THAT SAID DISCHARGE SECTION OPENS AT THE EXPOSED SURFACE OF THE BODY OF WATER TO DISCHARGE THE EVAPORATION PREVENTING SUBSTANCE THEREON, FLOW CONTROL MEANS INTERPOSED IN SAID CONDUIT MEANS FOR REGULATING THE FLOW OF THE EVAPORATION PREVENTING SUBSTANCE THERETHROUGH, AND MEANS TO ACTUATE SAID FLOW CONTROL MEANS IN RESPONSE TO THE RATE OF FLOW IN A SELECTED DIRECTION OF A FLUID WHICH INFLUENES THE RATE OF EVAPORATION OF WATER FROM THE EXPOSED SURFACE.
Claim 2
Dependent Claim
181 words
6. A DEVICE FOR DISPENSING AN EVAPORATION PREVENTING SUBSTANCE ONTO THE EXPOSED SURFACE OF A BODY OF WATER; COMPRISING A NON-ROTATABLE UPSTANDING SUPPORT ADAPTED TO. BE MOUNTED AT THE BANK OF THE BODY OF WATER, A FLOAT MOVABLE VERTICALLY WITH RESPECT TO SAID NON-ROTATABLE SUPPORT AND DEPATED TO BE IMMERSED IN THE BODY OF WATER SO THAT THE VERTICAL POSITION OF SAID FLOAT IS DETERMINED BY THE LEVEL OF THE EXPOSED SURFACE OF THE BODY OF WATER, A SOURCE OF THE EVAPORATION PREVENTING SUBSTANCE LOCATED ON SHORE, CONDUIT MEANS LEADING FROM SAID SOURCE AND TERMINATING IN A A DISCHARGE SECTION WHICH IS MOVABLE VERTICALLY WITH SAID FLOAT SO THAT SAID DISCHARGE SECTION OPENS AT THE EXPOSED SURFACE OF THE BODY OF WATER TO DISCHARGE THE EVAPORATION PREVENTING SUBSTANCE THEREON, FLOW CONTROL MEANS INTERPOSED IN SAID CONDUIT MEANS FOR REGULATING THE FLOW OF THE EVAPORATION PREVENTING SUBSTANCE THERETHROUGH, AND MEANS TO ACTUATE SAID FLOW CONTROL MEANS IN RESPONSE TO THE RATE OF FLOW IN A SELECTED DIRECTION OF A FLUID WHICH INFLUENES THE RATE OF EVAPORATION OF WATER FROM THE EXPOSED SURFACE.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |