US3508567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas proportioner
Assignee: Airco Inc
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Filing: 1966-04-06
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Granted: 1970-04-28
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Expires: 1986-04-06
Abstract
No abstract record available.
Inventors
- 👤 James A Kirk
- 👤 Jerry P Helck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:47
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/465; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
A HAND TORCH COMPRISING AN ELONGATED BODY PORTION, COMBUSTION SUPPORTING GAS INLET MEANS IN SAID BODY PORTION AND FUEL GAS INLET MEANS IN SAID BODY PORTION IN THE REAR END THEREOF, A FIRST AND SECOND GAS CHAMBER IN SAID BODY PORTION, VALVE MEANS CONTROLLING FLOW FROM SAID INLET MEANS TO SAID GAS CHAMBER, MOTOR MEANS COMPRISING A FLEXIBLE DIAPHRAGM IN EACH OF SAID CHAMBERS, AN ELONGATED ROCKING LEVER PIVOTALLY CONNECTED TO EACH OF SAID DIAPHRAGMS, FULCRUM MEANS FOR SAID ROCKING LEVER, MEANS FOR ADJUSTING THE POSITION OF THE FULCRUM MEANS OF THE ROCKING LEVER, SAID ADJUSTING MEANS HAVING AT LEAST A PORTION THEREOF PROJECTING THROUGH SAID BODY PORTION AND ADAPTED TO BE CONTACTED WITH THE THUMB, MEANS INTERCONNECTING ONE OF SAID DIAPHRAGMS WITH SAID VALVE MEANS FOR CONTROLLING FLOW INTO ONE OF SAID CHAMBERS, ACTUATING MEANS FOR CONTROLLING THE POSITION OF SAID VALVE MEANS FOR CONTROLLING FLOW INTO THE OTHER OF SAID CHAMBERS, SAID ACTUATING MEANS HAVING AT LEAST A PORTION THEREOF PROJECTING THROUGH SAID ELONGATED BODY AND ADAPTED TO BE CONTACTED WTIH THE THUMB, SAID LAST MENTIONED PORTION BEING IN CLOSE PROXIMITY TO SAID AFOREMENTIONED PORTION OF SAID ADJUSTING MEANS SO THAT INITIATION OF FLOW AND CONTROL OF MIXTURE MAY BE EFFECTED BY ONLY SLIGHT MOVEMENT OF THE THUMB AND CONDUIT MEANS CONNECTING SAID GAS CHAMBERS TO OUTLET MEANS IN THE FORWARD END OF THE BODY PORTION.
Claim 2
Dependent Claim
228 words
A HAND TORCH COMPRISING AN ELONGATED BODY PORTION, COMBUSTION SUPPORTING GAS INLET MEANS IN SAID BODY PORTION AND FUEL GAS INLET MEANS IN SAID BODY PORTION IN THE REAR END THEREOF, A FIRST AND SECOND GAS CHAMBER IN SAID BODY PORTION, VALVE MEANS CONTROLLING FLOW FROM SAID INLET MEANS TO SAID GAS CHAMBER, MOTOR MEANS COMPRISING A FLEXIBLE DIAPHRAGM IN EACH OF SAID CHAMBERS, AN ELONGATED ROCKING LEVER PIVOTALLY CONNECTED TO EACH OF SAID DIAPHRAGMS, FULCRUM MEANS FOR SAID ROCKING LEVER, MEANS FOR ADJUSTING THE POSITION OF THE FULCRUM MEANS OF THE ROCKING LEVER, SAID ADJUSTING MEANS HAVING AT LEAST A PORTION THEREOF PROJECTING THROUGH SAID BODY PORTION AND ADAPTED TO BE CONTACTED WITH THE THUMB, MEANS INTERCONNECTING ONE OF SAID DIAPHRAGMS WITH SAID VALVE MEANS FOR CONTROLLING FLOW INTO ONE OF SAID CHAMBERS, ACTUATING MEANS FOR CONTROLLING THE POSITION OF SAID VALVE MEANS FOR CONTROLLING FLOW INTO THE OTHER OF SAID CHAMBERS, SAID ACTUATING MEANS HAVING AT LEAST A PORTION THEREOF PROJECTING THROUGH SAID ELONGATED BODY AND ADAPTED TO BE CONTACTED WTIH THE THUMB, SAID LAST MENTIONED PORTION BEING IN CLOSE PROXIMITY TO SAID AFOREMENTIONED PORTION OF SAID ADJUSTING MEANS SO THAT INITIATION OF FLOW AND CONTROL OF MIXTURE MAY BE EFFECTED BY ONLY SLIGHT MOVEMENT OF THE THUMB AND CONDUIT MEANS CONNECTING SAID GAS CHAMBERS TO OUTLET MEANS IN THE FORWARD END OF THE BODY PORTION.
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) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |