Patent US3172923A successfully refreshed from Google Patents.
US3172923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power valve
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:31
CPC Classifications
F; F02; F02M; F02M7/00; F02M7/12; F02M7/133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
373 words
ON AN ENGINE HAVING MEANS FOR PRODUCING MANIFOLD VACUUM, A CARBURETOR INCLUDING SEPARATE THROTTLE BODY AND FUEL BOWL, AND FUEL BOWL COVER AND AIR HORN MEMBERS, AND A FUEL METERING SPACER SANDWICHED BETWEEN THE THROTTLE BODY AND FUEL BOWL MEMBER AND THE AIR HORN AND FUEL BOWL COVER MEMBER HAVING A CARBURETOR MAIN FUEL WELL PORTION SUSPENDED THEREFROM WITH A BOTTOM ADJACENT THE BOTTOM OF THE FUEL BOWL PORTION OF THE THROTTLE BODY AND FUEL BOWL MEMBER, A FUEL METERING ORIFICE IN SAID BOTTOM OF THE MAIN FUEL WELL PORTION, A POWER VALVE ASSEMBLY IN SAID CARBURETOR COMPRISING AN ANNULAR VALVE SEAT AROUND SAID METERING ORIFICE, A VALVE INCLUDING AN ANNULAR VALVE SURFACE POSITIONED BETWEEN THE BOTTOM OF SAID CARBURETOR MAIN FUEL WELL PORTION AND THE BOTTOM OF THE FUEL BOWL PORTION OF THE THROTTLE BODY AND FUEL BOWL MEMBER FOR RECIPROCAL MOVEMENT THEREBETWEEN INTO AND OUT OF CLOSING RELATION TO SAID METERING ORIFICE, AN LSHAPED PUSH ROD EXTENDING THROUGH THE METERING SPACER AND BETWEEN THE BOTTOMS OF THE MAIN FUEL WELL PORTION AND FUEL BOWL PORTION OF THE CARBURETOR, MEANS REMOVABLY SECURING SAID L-SHAPED PUSH ROD AT ONE END TO SAID VALVE AT A LOCATION REMOTE FROM THE MEETING ORIFICE WHEREBY ON MOVEMENT OF THE PORTION OF THE PUSH ROD EXTENDING BETWEEN THE BOTTOMS OF THE MAIN FUEL WELL PORTION AND FUEL BOWL PORTION OF THE CARBURETOR AWAY FROM THE METERING ORIFICE UNRESTRICTED FUEL FLOW AROUND THE COMPLETE CIRCUMFERENCE OF THE METERING ORIFICE IS PERMITTED, RESILIENT MEANS FOR BIASING THE PUSH ROD IN A DIRECTION TO SEAT THE VALVE ON THE VALVE SEAT, A CYLINDER RECESS IN THE AIR HORN AND FUEL BOWL COVER MEMBER, MEANS CONNECTING THE RECESS TO ENGINE MANIFOLD VACUUM THROUGH THE AIR HORN AND FUEL BOWL COVER MEMBER, THE METERING SPACER AND THE FUEL BOWL AND THROTTLE BODY MEMBER, A HOLLOW CYLINDRICAL PISTON SPACED FROM ONE END OF SAID L-SHAPED PUSH ROD AND MOUNTED IN SAID CYLINDER RECESS, SAID PISTON BEING CLOSED AT ONE END AND OPEN AT THE OTHER END TO THE MANIFOLD VACUUM IN THE CYLINDER RECESS AND RESILIENT MEANS STRONGER THAN THE FIRST MENTIONED RESILIENT MEANS IN THE CYLINDER RECESS FOR URGING THE OTHER END OF THE PISTON MEMBER INTO ENGAGEMENT WITH THE PUSH ROD.
Claim 2
Dependent Claim
373 words
ON AN ENGINE HAVING MEANS FOR PRODUCING MANIFOLD VACUUM, A CARBURETOR INCLUDING SEPARATE THROTTLE BODY AND FUEL BOWL, AND FUEL BOWL COVER AND AIR HORN MEMBERS, AND A FUEL METERING SPACER SANDWICHED BETWEEN THE THROTTLE BODY AND FUEL BOWL MEMBER AND THE AIR HORN AND FUEL BOWL COVER MEMBER HAVING A CARBURETOR MAIN FUEL WELL PORTION SUSPENDED THEREFROM WITH A BOTTOM ADJACENT THE BOTTOM OF THE FUEL BOWL PORTION OF THE THROTTLE BODY AND FUEL BOWL MEMBER, A FUEL METERING ORIFICE IN SAID BOTTOM OF THE MAIN FUEL WELL PORTION, A POWER VALVE ASSEMBLY IN SAID CARBURETOR COMPRISING AN ANNULAR VALVE SEAT AROUND SAID METERING ORIFICE, A VALVE INCLUDING AN ANNULAR VALVE SURFACE POSITIONED BETWEEN THE BOTTOM OF SAID CARBURETOR MAIN FUEL WELL PORTION AND THE BOTTOM OF THE FUEL BOWL PORTION OF THE THROTTLE BODY AND FUEL BOWL MEMBER FOR RECIPROCAL MOVEMENT THEREBETWEEN INTO AND OUT OF CLOSING RELATION TO SAID METERING ORIFICE, AN LSHAPED PUSH ROD EXTENDING THROUGH THE METERING SPACER AND BETWEEN THE BOTTOMS OF THE MAIN FUEL WELL PORTION AND FUEL BOWL PORTION OF THE CARBURETOR, MEANS REMOVABLY SECURING SAID L-SHAPED PUSH ROD AT ONE END TO SAID VALVE AT A LOCATION REMOTE FROM THE MEETING ORIFICE WHEREBY ON MOVEMENT OF THE PORTION OF THE PUSH ROD EXTENDING BETWEEN THE BOTTOMS OF THE MAIN FUEL WELL PORTION AND FUEL BOWL PORTION OF THE CARBURETOR AWAY FROM THE METERING ORIFICE UNRESTRICTED FUEL FLOW AROUND THE COMPLETE CIRCUMFERENCE OF THE METERING ORIFICE IS PERMITTED, RESILIENT MEANS FOR BIASING THE PUSH ROD IN A DIRECTION TO SEAT THE VALVE ON THE VALVE SEAT, A CYLINDER RECESS IN THE AIR HORN AND FUEL BOWL COVER MEMBER, MEANS CONNECTING THE RECESS TO ENGINE MANIFOLD VACUUM THROUGH THE AIR HORN AND FUEL BOWL COVER MEMBER, THE METERING SPACER AND THE FUEL BOWL AND THROTTLE BODY MEMBER, A HOLLOW CYLINDRICAL PISTON SPACED FROM ONE END OF SAID L-SHAPED PUSH ROD AND MOUNTED IN SAID CYLINDER RECESS, SAID PISTON BEING CLOSED AT ONE END AND OPEN AT THE OTHER END TO THE MANIFOLD VACUUM IN THE CYLINDER RECESS AND RESILIENT MEANS STRONGER THAN THE FIRST MENTIONED RESILIENT MEANS IN THE CYLINDER RECESS FOR URGING THE OTHER END OF THE PISTON MEMBER INTO ENGAGEMENT WITH THE PUSH ROD.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |