US3287968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat speedometer
Assignee: Rule Industries LLC
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Filing: 1964-03-24
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Granted: 1966-11-29
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Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A BOAT SPEEDOMETER, THE COMBINATION OF A STRUT ADAPTED TO PROJECT INTO THE WATER; A PLATFROM SUPERSTRUCTURE; A TORSION BAR ON WHICH SAID STRUT IS SECURED, SAID BAR HAVING ITS ENDS MOUNTED TO SAID PLATFORM; A TRANSFORMER ATTACHED TO SAID PLATFORM HAVING A PRIMARY WINDING AND A SECONDARY WINDING; A PROJECTION ATTACHED TO SAID TORSION BAR, DEFINING AN AIR GAP IN THE FLUX PATH BETWEEN SAID PRIMARY AND SECONDARY WINDINGS, SAID AIR GAP VARYING IN DIRECT PROPORTION TO THE FORCE ON THE STRUT; A FIRST VOLTAGE
Claim 2
Dependent Claim
87 words
IN A BOAT SPEEDOMETER, THE COMBINATION OF A STRUT ADAPTED TO PROJECT INTO THE WATER; A PLATFROM SUPERSTRUCTURE; A TORSION BAR ON WHICH SAID STRUT IS SECURED, SAID BAR HAVING ITS ENDS MOUNTED TO SAID PLATFORM; A TRANSFORMER ATTACHED TO SAID PLATFORM HAVING A PRIMARY WINDING AND A SECONDARY WINDING; A PROJECTION ATTACHED TO SAID TORSION BAR, DEFINING AN AIR GAP IN THE FLUX PATH BETWEEN SAID PRIMARY AND SECONDARY WINDINGS, SAID AIR GAP VARYING IN DIRECT PROPORTION TO THE FORCE ON THE STRUT; A FIRST VOLTAGE
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |