US3272483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: ACF Industries Inc
•
Filing: 1965-06-10
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Granted: 1966-09-13
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Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles L Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:44
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4304; F02M2700/4311
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A MULTISTAGE CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING (1) A BODY STRUCTURE HAVING AT LEAST ONE PRIMARY MIXTURE CONDUIT AND AT LEAST ONE SECONDARY MIXTURE CONDUIT FOR THE FLOW OF AIR AND FUEL MIXTURE THERETHROUGH; (2) IDLE AND MAIN FUEL SYSTEMS INCLUDING A MAIN FUEL NOZZLE FOR SAID PRIMARY CONDUIT; (3) A MAIN FUEL SYSTEM INCLUDING A MAIN FUEL NOZZLE FOR SAID SECONDARY CONDUIT; (4) MANUALLY OPERATED PRIMARY AND SECONDARY THROTTLES MOVABLY MOUNTED ON PRIMARY AND SECONDARY THROTTLE SHAFTS IN THE RESPECTIVE MIXTURE CONDUITS DOWNSTREAM OF SAID MAIN FUEL NOZZLE FOR CONTROLLING THE FLOW OF AIR-FUEL MIXTURE THERETHROUGH; (5) MEANS FOR SEQUENTIALLY OPENING SAID PRIMARY AND SECONDARY THROTTLES INCLUDING (A) A FOOT PEDAL ACTUATED LEVER ARM PIVOTALLY MOUNTED ON THE SAID SECONDARY THROTTLE SHAFT; (B) A SECONDARY THROTTLE LEVER FIXED TO SAID SECONDARY THROTTLE SHAFT; (C) A PRIMARY THROTTLE LEVER FIXED TO SAID PRIMARY THROTTLE SHAFT; (D) PUSHER MEANS CONSTITUTING A CONNECTING ROD OPERATIVELY CONNECTED BY WAY OF A SPLIT LEVER TO SAID FOOT ACTUATED LEVER ARM AND TO SAID PRIMARY LEVER FOR URGING THE LATTER IN A DIRECTION TO OPEN THE SAID PRIMARY THROTTLE, SAID PUSHER MEANS AND SPLIT LEVER HAVING MEANS TO ALLOW THE SAID SECONDARY THROTTLE TO CONTINUE MOVING IN A DIRECTION TO OPEN THE SAME AFTER THE SAID PRIMARY THROTTLE IS FULLY OPEN.
Claim 2
Dependent Claim
218 words
A MULTISTAGE CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING (1) A BODY STRUCTURE HAVING AT LEAST ONE PRIMARY MIXTURE CONDUIT AND AT LEAST ONE SECONDARY MIXTURE CONDUIT FOR THE FLOW OF AIR AND FUEL MIXTURE THERETHROUGH; (2) IDLE AND MAIN FUEL SYSTEMS INCLUDING A MAIN FUEL NOZZLE FOR SAID PRIMARY CONDUIT; (3) A MAIN FUEL SYSTEM INCLUDING A MAIN FUEL NOZZLE FOR SAID SECONDARY CONDUIT; (4) MANUALLY OPERATED PRIMARY AND SECONDARY THROTTLES MOVABLY MOUNTED ON PRIMARY AND SECONDARY THROTTLE SHAFTS IN THE RESPECTIVE MIXTURE CONDUITS DOWNSTREAM OF SAID MAIN FUEL NOZZLE FOR CONTROLLING THE FLOW OF AIR-FUEL MIXTURE THERETHROUGH; (5) MEANS FOR SEQUENTIALLY OPENING SAID PRIMARY AND SECONDARY THROTTLES INCLUDING (A) A FOOT PEDAL ACTUATED LEVER ARM PIVOTALLY MOUNTED ON THE SAID SECONDARY THROTTLE SHAFT; (B) A SECONDARY THROTTLE LEVER FIXED TO SAID SECONDARY THROTTLE SHAFT; (C) A PRIMARY THROTTLE LEVER FIXED TO SAID PRIMARY THROTTLE SHAFT; (D) PUSHER MEANS CONSTITUTING A CONNECTING ROD OPERATIVELY CONNECTED BY WAY OF A SPLIT LEVER TO SAID FOOT ACTUATED LEVER ARM AND TO SAID PRIMARY LEVER FOR URGING THE LATTER IN A DIRECTION TO OPEN THE SAID PRIMARY THROTTLE, SAID PUSHER MEANS AND SPLIT LEVER HAVING MEANS TO ALLOW THE SAID SECONDARY THROTTLE TO CONTINUE MOVING IN A DIRECTION TO OPEN THE SAME AFTER THE SAID PRIMARY THROTTLE IS FULLY OPEN.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |