Patent US4368305A successfully refreshed from Google Patents.
Patent US3240194A successfully refreshed from Google Patents.
US3240194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine
Assignee: Outboard Marine Corp
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Filing: 1964-08-03
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Granted: 1966-03-15
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Frank J Rychlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:07
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/04; F01N1/00; F01N1/08; F01N1/083; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02M; F02M35/00; F02M35/10; F02M35/1015; F02M35/1019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF MUFFING A PISTON PORTED ENGINE COMPRISING THE STEPS OF AFFORDING FLOW OF THE RELATIVELY HIGH PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER AT THE TIME OF INITIAL PORTING OF THE CYLINDER INTO A FIRST RELATIVELY EFFICIENT MUFFING DEVICE, AFFORDING FLOW OF THE INTERMEDIATE PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER AFTER THE INITIAL PORTION OF THE CYLINDER INTO A SECOND MUFFER HAVING A LESSER MUFFING EFFICIENCY THAN THE FIRST MUFFER, AND AFFORDING RELATIVELY UNRESTRICTED FLOW TO THE ATOMSPHERE OF THE REMAINING RELATIVELY LOW PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER SUBSEQUENT TO THE TIME WHEN FLOW OF EXHAUSE GASES INTO THE SECOND MUFFER IS AFFORDED.
Claim 2
Independent Claim
108 words
A METHOD OF MUFFING A PISTON PORTED ENGINE COMPRISING THE STEPS OF AFFORDING FLOW OF THE RELATIVELY HIGH PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER AT THE TIME OF INITIAL PORTING OF THE CYLINDER INTO A FIRST RELATIVELY EFFICIENT MUFFING DEVICE, AFFORDING FLOW OF THE INTERMEDIATE PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER AFTER THE INITIAL PORTION OF THE CYLINDER INTO A SECOND MUFFER HAVING A LESSER MUFFING EFFICIENCY THAN THE FIRST MUFFER, AND AFFORDING RELATIVELY UNRESTRICTED FLOW TO THE ATOMSPHERE OF THE REMAINING RELATIVELY LOW PRESSURE EXHAUST GASES PRESENT IN THE CYLINDER SUBSEQUENT TO THE TIME WHEN FLOW OF EXHAUSE GASES INTO THE SECOND MUFFER IS AFFORDED.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |