US3102515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally coated intake manifold for internal combustion engines
Assignee: AO Smith Corp
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Filing: 1961-09-21
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Granted: 1963-09-03
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 James W Schwerdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:39
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10091; F02M35/10124; F02B; F02B77/00; F02B77/02; F02M33/00; F02M33/02; F02M33/04; F02M33/046; F02M35/10314; F02M35/10321; F02M35/10334; F02M35/1034; F02M35/10347; F02M35/10367; F02M35/104; F02M35/116; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F05; F05C; F05C2203/00; F05C2203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD OF IMPROVING THE TORQUE AND BRAKE HORSEPOWER EFFICIENCY OF AN INTERNAL COMBUSTION ENGINE, COMPRISING CASTING AN INTAKE MANIFOLD FOR AN INTERNAL COMBUSTION ENGINE, ROUGHENING THE INTERNAL SURFACES OF SAID INTAKE MANIFOLD, APPLYING A GLASS FRIT TO THE ROUGHENED SURFACE OF THE INTAKE MANIFOLD, FIRING SAID GLASS FRIT AT AN ELEVATED TEMPERATURE TO FUSE THE GLASS TO SAID INTAKE MANIFOLD TO PROVIDE A SMOOTH, GLASS LINED INTERNAL SURFACE ON SAID INTAKE MANIFOLD, INSTALLING SAID MANIFOLD BETWEEN THE CARBURETOR AND THE INDIVIDUAL CYLINDERS IN AN INTERNAL COMBUSTION ENGINE SYSTEM, AND RUNNING SAID ENGINE WITH SAID INTAKE MANIFOLD THEREIN, THEREBY PROVIDING AN INTERNAL COMBUSTION ENGINE HAVING INCREASED TORQUE AND IMPROVED BRAKE HORSEPOWER EFFICIENCY.
Claim 2
Independent Claim
112 words
A METHOD OF IMPROVING THE TORQUE AND BRAKE HORSEPOWER EFFICIENCY OF AN INTERNAL COMBUSTION ENGINE, COMPRISING CASTING AN INTAKE MANIFOLD FOR AN INTERNAL COMBUSTION ENGINE, ROUGHENING THE INTERNAL SURFACES OF SAID INTAKE MANIFOLD, APPLYING A GLASS FRIT TO THE ROUGHENED SURFACE OF THE INTAKE MANIFOLD, FIRING SAID GLASS FRIT AT AN ELEVATED TEMPERATURE TO FUSE THE GLASS TO SAID INTAKE MANIFOLD TO PROVIDE A SMOOTH, GLASS LINED INTERNAL SURFACE ON SAID INTAKE MANIFOLD, INSTALLING SAID MANIFOLD BETWEEN THE CARBURETOR AND THE INDIVIDUAL CYLINDERS IN AN INTERNAL COMBUSTION ENGINE SYSTEM, AND RUNNING SAID ENGINE WITH SAID INTAKE MANIFOLD THEREIN, THEREBY PROVIDING AN INTERNAL COMBUSTION ENGINE HAVING INCREASED TORQUE AND IMPROVED BRAKE HORSEPOWER EFFICIENCY.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |