US3914937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbureted air preheater stove
Assignee: Motors Liquidation Co
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Filing: 1974-09-03
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Granted: 1975-10-28
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Expires: 1994-09-03
Abstract
Abstract An internal combustion rotary engine having a can type catalytic converter secured up close to the engine directly to the exhaust manifold is provided with a can type stove closed at only one end that fits over an upper end of the converter and is secured in place without requiring fasteners and is connected at the closed upper end by a tube with the air inlet of the engine''s carburetor so that fresh air is directed through the lower open end of the stove and then along the side and over the end of the converter and is heated thereby prior to delivery to the carburetor.
Inventors
- 👤 Walter C Heidacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:20
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02M31/093; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
An internal combustion engine having a carburetor and an exhaust manifold, said carburetor having an air cleaner with an air horn extending outwardly therefrom, a catalytic converter having a lower end connected to said exhaust manifold and a closed upper end proximate said air horn, and a stove having an open end and a closed end fitting over said converter a substantial longitudinal distance with air space therebetween and with said open stove end adjacent said lower converter end and said closed stove end opposite said closed upper converter end, said stove having angularly spaced radially inwardly extending integral projections having a press-fit with the exterior of said converter to maintain the air space annular between opposing sides of said stove and said converter and also to secure said stove to said converter, said closed stove end having an inwardly extending integral projection engaging said closed upper converter end to maintain the air space between the closed ends of said converter and stove, and a tube connecting said closed upper stove end to said air horn whereby said stove draws in atmospheric air through said open lower end and then longitudinally of said converter through said annular air space and then past the closed upper end of said converter with the thus heated air thereafter directed into said carburetor.
Claim 2
Dependent Claim
219 words
An internal combustion engine having a carburetor and an exhaust manifold, said carburetor having an air cleaner with an air horn extending outwardly therefrom, a catalytic converter having a lower end connected to said exhaust manifold and a closed upper end proximate said air horn, and a stove having an open end and a closed end fitting over said converter a substantial longitudinal distance with air space therebetween and with said open stove end adjacent said lower converter end and said closed stove end opposite said closed upper converter end, said stove having angularly spaced radially inwardly extending integral projections having a press-fit with the exterior of said converter to maintain the air space annular between opposing sides of said stove and said converter and also to secure said stove to said converter, said closed stove end having an inwardly extending integral projection engaging said closed upper converter end to maintain the air space between the closed ends of said converter and stove, and a tube connecting said closed upper stove end to said air horn whereby said stove draws in atmospheric air through said open lower end and then longitudinally of said converter through said annular air space and then past the closed upper end of said converter with the thus heated air thereafter directed into said carburetor.
Claim 3
Dependent Claim
250 words
An internal combustion engine having a carburetor and an exhaust manifold, said carburetor having an air cleaner with an air horn extending outwardly therefrom, a cylindrical catalytic converter having its longitudinal axis extending transverse to said air horn and having a lower end connected to said exhaust manifold and a closed upper end proximate said air horn, and a cylindrical sheet metal carburetor air preheater stove of larger diameter than said converter having an open end and a closed end, said stove fitting over said converter a substantial longitudinal distance with air space therebetween and with said open stove end adjacent said lower converter end and said closed stove end opposite said closed upper converter end, said stove having at least three angularly spaced radially inwardly extending integral projections having a press-fit with the exterior of said converter to maintain the air space annular between opposing sides of said stove and said converter and also to secure said stove to said converter, said closed stove end having at least one inwardly extending integral projection engaging said closed upper converter end to maintain the air space between the closed ends of said converter and stove, and a tube connecting said closed upper stove end to said air horn whereby said stove draws in atmospheric air through said open lower end and then longitudinally of said converter through said annular air space and then past the closed upper end of said converter with the thus heated air thereafter directed into said carburetor.
Claim 4
Dependent Claim
250 words
An internal combustion engine having a carburetor and an exhaust manifold, said carburetor having an air cleaner with an air horn extending outwardly therefrom, a cylindrical catalytic converter having its longitudinal axis extending transverse to said air horn and having a lower end connected to said exhaust manifold and a closed upper end proximate said air horn, and a cylindrical sheet metal carburetor air preheater stove of larger diameter than said converter having an open end and a closed end, said stove fitting over said converter a substantial longitudinal distance with air space therebetween and with said open stove end adjacent said lower converter end and said closed stove end opposite said closed upper converter end, said stove having at least three angularly spaced radially inwardly extending integral projections having a press-fit with the exterior of said converter to maintain the air space annular between opposing sides of said stove and said converter and also to secure said stove to said converter, said closed stove end having at least one inwardly extending integral projection engaging said closed upper converter end to maintain the air space between the closed ends of said converter and stove, and a tube connecting said closed upper stove end to said air horn whereby said stove draws in atmospheric air through said open lower end and then longitudinally of said converter through said annular air space and then past the closed upper end of said converter with the thus heated air thereafter directed into said carburetor.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |