Patent US3602188A successfully refreshed from Google Patents.
US3602188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski boat warning apparatus
Assignee: Individual
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Filing: 1969-10-20
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Granted: 1971-08-31
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Expires: 1989-10-20
Abstract
Abstract A flag system for ski boats automatically operated by a release of tow line tension to raise a flag for warning other boats of ''''skier down.'''' A spring loaded flag standard is retracted by tension on a tow line for water skiers and upon tension release automatically raises the warning flag. A normally closed switch in the system operates a warning light visible to a boat operator upon skier release of the tow line.
Inventors
- 👤 Daniel M Penaflor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:29
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/70; B63B32/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A ski boat warning device comprising an open ended flag housing adapted to be mounted in extension above the deck of a ski boat, a spring-loaded flagstaff carrying a flag and disposed in said housing to normally extend said flag from the open end thereof, and a tension line connected to said flagstaff adjacent to the lower end thereof for extension sternward of the boat to connect to a skier tow line, whereby skier tension upon said tension line through the tow line holds said flagstaff within said flag housing and tension release causes said spring loading means to raise said flagstaff and display said flag above said flag housing.
Claim 2
Dependent Claim
110 words
A ski boat warning device comprising an open ended flag housing adapted to be mounted in extension above the deck of a ski boat, a spring-loaded flagstaff carrying a flag and disposed in said housing to normally extend said flag from the open end thereof, and a tension line connected to said flagstaff adjacent to the lower end thereof for extension sternward of the boat to connect to a skier tow line, whereby skier tension upon said tension line through the tow line holds said flagstaff within said flag housing and tension release causes said spring loading means to raise said flagstaff and display said flag above said flag housing.
Claim 3
Dependent Claim
16 words
The device of claim 1 further defined by means removably attaching said flag to said flagstaff.
Claim 4
Dependent Claim
49 words
The device of claim 1 further defined by means defining an opening through a stern of a boat carrying said flagstaff and having a flange about the opening inboard and outboard of the boat stern, and means limiting the length of movement of said tension line through said opening.
Claim 5
Dependent Claim
71 words
The device of claim 3 further defined by said means limiting the length of movement of said tension line comprising, a connector joined to the end of the tension line exterior of the boat stern and having a lateral extent greater than the stern opening, and a collar larger than the stern opening disposed about the tension line within the boat and movable between the boat stern and a line protuberance.
Claim 6
Dependent Claim
20 words
The device of claim 3 further defined by means connected in said tension line for controllably varying the line length.
Claim 7
Dependent Claim
68 words
The device of claim 1 further defined by a cylindrical housing mounting said flag housing, a guide slidably disposed in said cylindrical housing with a shoulder thereabout engaging the top of said spring loading means, said guide carrying said flagstaff, and a centrally apertured plug secured in said cylindrical housing above said guide for limiting upward travel of the guide, and said flagstaff extending through the plug aperture.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |