US3702485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard motorboat with inboard mount
Assignee: Chris Craft Industries Inc
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Filing: 1970-12-07
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Granted: 1972-11-14
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Expires: 1990-12-07
Abstract
Abstract An outboard motorboat has an inboard mounting well. A gate in the transom of the boat vents engine fumes and precludes entry of sea water when the boat motion is reversed. The well functions as a channel in the bottom of the hull for directing a stream of water through the propeller and for reducing the hull surface area in contact with the water.
Inventors
- 👤 Theodore G Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:35
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/14; B63B3/70; B63H; B63H20/00; B63H20/02; B63H20/04; B63H21/00; B63H21/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
An outboard motorboat comprising a well formed in the bottom of the hull near the stern of the boat, means for mounting an outboard motor in said well, the back wall of said well being at the transom of said boat, control means in said transom for enabling sea water to leave said well when said boat is under way in a forward direction and for preventing sea water from entering said well when said boat is under way in a reversed direction wherein said control means comprises a gate, hinged at its top to an opening in said transom, said gate hanging down and closing said well to preclude an entry of sea water into said well while said boat is reversed, and opening responsive to water resistance when said boat is in forward motion.
Claim 2
Dependent Claim
136 words
An outboard motorboat comprising a well formed in the bottom of the hull near the stern of the boat, means for mounting an outboard motor in said well, the back wall of said well being at the transom of said boat, control means in said transom for enabling sea water to leave said well when said boat is under way in a forward direction and for preventing sea water from entering said well when said boat is under way in a reversed direction wherein said control means comprises a gate, hinged at its top to an opening in said transom, said gate hanging down and closing said well to preclude an entry of sea water into said well while said boat is reversed, and opening responsive to water resistance when said boat is in forward motion.
Claim 3
Dependent Claim
23 words
The boat of claim 1 wherein the bottom of said gate terminates slightly above the waterline when said boat is in the water.
Claim 4
Dependent Claim
75 words
The boat of claim 1 wherein said control means further comprises a tunnel cut into said transom, said gate being hinged at its top to the bottom edge of the tunnel in said transom and hanging down under gravity toward the waterline, said hinge being high enough to permit the propeller of said motor to tip upwardly when said boat is being hauled, and said gate hanging downwardly to about one inch above the waterline.
Claim 5
Dependent Claim
17 words
The boat of claim 3 wherein said well forms a channel for directing water toward said propeller.
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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |