US3170434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary power unit for inboard cruisers
Assignee: Individual
•
Filing: 1963-04-15
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Granted: 1965-02-23
•
Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 John W Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:54
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/02; B63H23/10; B63H23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A BOAT WITH AN AUXILIARY POWER UNIT COMPRISING A BOAT HULL HAVING AN INBOARD ENGINE WITH A PROPELLER SHAFT CONNECTED THERETO, AND A PORTABLE, LIGHT WEIGHT SELF POWERED OUTBOARD-TYPE AUXILIARY MOTOR; SUPPORT MEANS WITHIN SAID HULL ON WHICH SAID AUXILIARY MOTOR IS MOUNTED SO THAT IT CAN BE MOVED FROM A STORED INACTIVE POSITION ALONG A PREDETERMINED PATH TO AN ACTIVE POSITION, AND HAVING A VERTICAL STUB SHAFT ALIGNED WITH THE PROPELLER SHAFT, POWER TRANSMISSION MEANS FOR MECHANICALLY CONNECTING THE PROPELLER AND MOTOR POWER SHAFT, THE PROPELLER SHAFT BEING DISENGAGEABLE FROM THE INBOARD ENGINE TO ALLOW FREE ROTATION THEREOF, WHEREBY THE AUXILIARY MOTOR CAN BE CONNECTED MECHANICALLY TO THE PROPELLER SHAFT TO DRIVER IT FREELY OF THE INBOARD ENGINE.
Claim 2
Dependent Claim
119 words
A BOAT WITH AN AUXILIARY POWER UNIT COMPRISING A BOAT HULL HAVING AN INBOARD ENGINE WITH A PROPELLER SHAFT CONNECTED THERETO, AND A PORTABLE, LIGHT WEIGHT SELF POWERED OUTBOARD-TYPE AUXILIARY MOTOR; SUPPORT MEANS WITHIN SAID HULL ON WHICH SAID AUXILIARY MOTOR IS MOUNTED SO THAT IT CAN BE MOVED FROM A STORED INACTIVE POSITION ALONG A PREDETERMINED PATH TO AN ACTIVE POSITION, AND HAVING A VERTICAL STUB SHAFT ALIGNED WITH THE PROPELLER SHAFT, POWER TRANSMISSION MEANS FOR MECHANICALLY CONNECTING THE PROPELLER AND MOTOR POWER SHAFT, THE PROPELLER SHAFT BEING DISENGAGEABLE FROM THE INBOARD ENGINE TO ALLOW FREE ROTATION THEREOF, WHEREBY THE AUXILIARY MOTOR CAN BE CONNECTED MECHANICALLY TO THE PROPELLER SHAFT TO DRIVER IT FREELY OF THE INBOARD ENGINE.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |