US3428942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine anchor alarm
Assignee: WALTER P ISAACSON
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Filing: 1966-05-06
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Granted: 1969-02-18
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Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 Walter P Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/22; B63B2021/003; B63B2021/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
MEANS FOR SENSING AND INDICATING DRAGGING OF A MARINE ANCHOR PAST BOTTOM MATERIAL AT THE BOTTOM OF A BODY OF WATER, COMPRISING: FIRST MEANS, INCLUDING A MARINE ANCHOR, AND MEANS FOR APPLYING FORCE TO THE ANCHOR IN A DIRECTION TENDING TO EFFECT DRAGGING OF THE ANCHOR, SAID FIRST MEANS INCLUDING MEANS PROVIDING A WALLED PASSAGE THROUGH WHICH BOTTOM MATERIAL IS FORCED INCIDENT TO DRAGGING OF THE ANCHOR THROUGH BOTTOM MATERIAL; SECOND MEANS, INCLUDING ROTARY MEANS DISPOSED IN AND RETAINED IN SAID PASSAGE BY SAID FIRST MEANS, SAID ROTARY MEANS BEING ARRANGED TO BE ROTATED BY PASSAGE OF BOTTOM MATERIAL THROUGH SAID PASSAGE; AND THIRD MEANS, INCLUDING MEANS FOR DETECTING AND PROVIDING AN INDICATION OF ROTATION OF SAID ROTARY MEANS RELATIVE TO SAID FIRST MEANS, WHEREBY MATERIAL AT THE BOTTOM OF A BODY OF WATER IS SENSED AND INDICATED INCIDENT TO PASSAGE OF BOTTOM MATERIAL THROUGH SAID PASSAGE.
Claim 2
Dependent Claim
147 words
MEANS FOR SENSING AND INDICATING DRAGGING OF A MARINE ANCHOR PAST BOTTOM MATERIAL AT THE BOTTOM OF A BODY OF WATER, COMPRISING: FIRST MEANS, INCLUDING A MARINE ANCHOR, AND MEANS FOR APPLYING FORCE TO THE ANCHOR IN A DIRECTION TENDING TO EFFECT DRAGGING OF THE ANCHOR, SAID FIRST MEANS INCLUDING MEANS PROVIDING A WALLED PASSAGE THROUGH WHICH BOTTOM MATERIAL IS FORCED INCIDENT TO DRAGGING OF THE ANCHOR THROUGH BOTTOM MATERIAL; SECOND MEANS, INCLUDING ROTARY MEANS DISPOSED IN AND RETAINED IN SAID PASSAGE BY SAID FIRST MEANS, SAID ROTARY MEANS BEING ARRANGED TO BE ROTATED BY PASSAGE OF BOTTOM MATERIAL THROUGH SAID PASSAGE; AND THIRD MEANS, INCLUDING MEANS FOR DETECTING AND PROVIDING AN INDICATION OF ROTATION OF SAID ROTARY MEANS RELATIVE TO SAID FIRST MEANS, WHEREBY MATERIAL AT THE BOTTOM OF A BODY OF WATER IS SENSED AND INDICATED INCIDENT TO PASSAGE OF BOTTOM MATERIAL THROUGH SAID PASSAGE.
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |