US3955835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas economizer
Assignee: Individual
•
Filing: 1975-02-21
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Granted: 1976-05-11
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Expires: 1995-02-21
Abstract
Abstract A gas economizer which comprises a union for insertion in a gas line leading to a gas appliance with the male portion of the union provided with a plurality of spirally extending fins to cause a swirling action in the gas passing therethrough.
Inventors
- 👤 Percy L. Farrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:01
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0206; F15; F15D; F15D1/00; F15D1/02; F16L19/0212; F16L19/0225
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A gas economizer for connection to the burner of an appliance comprising a male pipe union member having internal threads at one end thereof for connection to a gas pipe and external threads on the opposite end thereof, a female pipe union member having internal threads at one end for connection to a gas pipe and having a swivel coupling internally threaded mounted on the other end thereof for connection to the externally threaded portion of the male pipe union member, a convexed conical face formed on the end of said female union member having said coupler mounted thereon, a concaved conical face formed on the externally threaded end of said male union member for sealing engagement with the convexed face on said female union member, a converging opening extending through said male union member, and a plurality of spirally extending fins integrally formed on said male union member within said opening and projecting radially inwardly of said opening.
Claim 2
Dependent Claim
159 words
A gas economizer for connection to the burner of an appliance comprising a male pipe union member having internal threads at one end thereof for connection to a gas pipe and external threads on the opposite end thereof, a female pipe union member having internal threads at one end for connection to a gas pipe and having a swivel coupling internally threaded mounted on the other end thereof for connection to the externally threaded portion of the male pipe union member, a convexed conical face formed on the end of said female union member having said coupler mounted thereon, a concaved conical face formed on the externally threaded end of said male union member for sealing engagement with the convexed face on said female union member, a converging opening extending through said male union member, and a plurality of spirally extending fins integrally formed on said male union member within said opening and projecting radially inwardly of said opening.
Claim 3
Dependent Claim
64 words
A device as claimed in claim 1 wherein said opening in said male union member has a diameter greater than the diameter of the opening in said female union member and converges to a diameter substantially the same as the opening in said female union member to thereby create a high intensity swirling action in the mixture going into the burner of the appliance.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |