Patent US1974069A successfully refreshed from Google Patents.
Patent US3381699A successfully refreshed from Google Patents.
US3381699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment apparatus
Assignee: WILSON R COFFMAN
•
Filing: 1965-10-22
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Granted: 1968-05-07
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Wilson R Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:20
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2531; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/8593; Y10T137/86389
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
232 words
AN APPARATUS ADAPTED TO INTRODUCE PREDETERMINED VOLUMES OF LIQUID CHEMICAL ADDITIVE INTO A STREAM OF WATER FLOWING THROUGH A MAIN INCLUDING, A WATER METER ARRANGED IN THE MAIN TO MEASURE THE VOLUME OF WATER FLOWING THERETHROUGH, CAM OPERATED SWITCH MEANS DRIVEN BY THE METER AND CONNECTED WITH A POWER SOURCE AND WITH A PAIR OF POWER LINES, SAID SWITCH MEANS SHIFTABLE INTO AND OUT OF CONTACT WITH EACH OF THE POWER LINES FOR EQUAL PERIODS OF TIME, A CUT-OFF SWITCH CONNECTED WITH SAID POWER LINES AND WITH A CLOCK MOTOR, A FIRST CAM DRIVEN BY THE CLOCK MOTOR AT A RATE FASTER THAN THE CAM OPERATED SWITCH MEANS AND ADAPTED TO SHIFT CONTACT IN THE CUT-OFF SWITCH FROM ONE OF THE POWER LINES TO THE OTHER OF SAID POWER LINES AFTER THE CLOCK MOTOR HAS OPERATED A PREDETERMINED PERIOD OF TIME, A SECOND CAM DRIVEN BY THE CLOCK MOTOR EACH TIME ONE OF THE POWER LINES IS CONTACTED AT THE FIRST MENTIONED SWITCH, NORMALLY OPEN SWITCH MEANS CONNECTED WITH THE POWER SOURCE AND WITH A PUMP MOTOR AND RELATED TO THE SECOND CAM, SAID SECOND CAM ADAPTED TO CLOSE THE SWITCH MEANS TO ENERGIZE THE PUMP MOTOR FOR A PREDETERMINED PERIOD OF TIME DURING EACH PERIOD WHEN THE CLOCK MOTOR IS ENERGIZED, AND A PUMP ARRANGED BETWEEN AND CONNECTED WITH THE MAIN AND A CHEMICAL SUPPLY AND DRIVEN BY THE PUMP MOTOR.
Claim 2
Independent Claim
232 words
AN APPARATUS ADAPTED TO INTRODUCE PREDETERMINED VOLUMES OF LIQUID CHEMICAL ADDITIVE INTO A STREAM OF WATER FLOWING THROUGH A MAIN INCLUDING, A WATER METER ARRANGED IN THE MAIN TO MEASURE THE VOLUME OF WATER FLOWING THERETHROUGH, CAM OPERATED SWITCH MEANS DRIVEN BY THE METER AND CONNECTED WITH A POWER SOURCE AND WITH A PAIR OF POWER LINES, SAID SWITCH MEANS SHIFTABLE INTO AND OUT OF CONTACT WITH EACH OF THE POWER LINES FOR EQUAL PERIODS OF TIME, A CUT-OFF SWITCH CONNECTED WITH SAID POWER LINES AND WITH A CLOCK MOTOR, A FIRST CAM DRIVEN BY THE CLOCK MOTOR AT A RATE FASTER THAN THE CAM OPERATED SWITCH MEANS AND ADAPTED TO SHIFT CONTACT IN THE CUT-OFF SWITCH FROM ONE OF THE POWER LINES TO THE OTHER OF SAID POWER LINES AFTER THE CLOCK MOTOR HAS OPERATED A PREDETERMINED PERIOD OF TIME, A SECOND CAM DRIVEN BY THE CLOCK MOTOR EACH TIME ONE OF THE POWER LINES IS CONTACTED AT THE FIRST MENTIONED SWITCH, NORMALLY OPEN SWITCH MEANS CONNECTED WITH THE POWER SOURCE AND WITH A PUMP MOTOR AND RELATED TO THE SECOND CAM, SAID SECOND CAM ADAPTED TO CLOSE THE SWITCH MEANS TO ENERGIZE THE PUMP MOTOR FOR A PREDETERMINED PERIOD OF TIME DURING EACH PERIOD WHEN THE CLOCK MOTOR IS ENERGIZED, AND A PUMP ARRANGED BETWEEN AND CONNECTED WITH THE MAIN AND A CHEMICAL SUPPLY AND DRIVEN BY THE PUMP MOTOR.
References Cited (Backward Citations)
US2280656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |