Patent US3310022A successfully refreshed from Google Patents.
US3310022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system for outboard motors
Assignee: Kiekhaefer Corp
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Filing: 1965-08-23
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Granted: 1967-03-21
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Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Delhardt K Kollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:23
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/24; B63H20/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN AN OUTBOARD MOTOR HAVING A DRIVE UNIT WITH AN INTERNAL COMBUSTION ENGINE MOUNTED THEREON AND AN UNDERWATER PROPELLER DRIVE UNIT DEPENDING AT THE LOWER END THEREOF, AN ENGINE EXHAUST SYSTEM COMPRISING AN EXHAUST PIPE EXTENDING DOWNWARDLY FROM THE ENGINE IN SAID DRIVE UNIT, EXHAUST DISCHARGE MEANS COMMUNICATING WITH THE LOWER END OF SAID PIPE TO DISCHARGE THE EXHAUST THEREFROM, A WATER JACKET FOR SAID PIPE, INLET AND OUTLET MEANS INCLUDING INLET AND OUTLET PORTS TO CONTINUALLY FLOW WATER THROUGH SAID JACKET DURING OPERATION OF SAID ENGINE, AND PORT MEANS SUBSTANTIALLY SMALLER THAN SAID WATER
Claim 2
Dependent Claim
95 words
IN AN OUTBOARD MOTOR HAVING A DRIVE UNIT WITH AN INTERNAL COMBUSTION ENGINE MOUNTED THEREON AND AN UNDERWATER PROPELLER DRIVE UNIT DEPENDING AT THE LOWER END THEREOF, AN ENGINE EXHAUST SYSTEM COMPRISING AN EXHAUST PIPE EXTENDING DOWNWARDLY FROM THE ENGINE IN SAID DRIVE UNIT, EXHAUST DISCHARGE MEANS COMMUNICATING WITH THE LOWER END OF SAID PIPE TO DISCHARGE THE EXHAUST THEREFROM, A WATER JACKET FOR SAID PIPE, INLET AND OUTLET MEANS INCLUDING INLET AND OUTLET PORTS TO CONTINUALLY FLOW WATER THROUGH SAID JACKET DURING OPERATION OF SAID ENGINE, AND PORT MEANS SUBSTANTIALLY SMALLER THAN SAID WATER
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |