Patent US3841255A successfully refreshed from Google Patents.
US3841255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-snag anchor
Assignee: Individual
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Filing: 1973-09-11
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Granted: 1974-10-15
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Expires: 1993-09-11
Abstract
Abstract The anchor includes a shank having a cap received over one end. A hook is carried by the cap for securing an anchor line thereto. Flukes are secured about the shank adjacent the opposite end of the anchor. A coil spring interconnects between the cap at one end of the anchor and the opposite end of the anchor whereby the cap is retained on the one end of the shank and transmits anchor line forces of a magnitude less than a predetermined magnitude to the one anchor end. When the anchor becomes snagged, the coil spring permits removal of the cap in response to anchor line forces equal to or greater than the predetermined magnitude of force whereby anchor line forces are transferred from the cap end of the anchor to the fluke end of the anchor and permit unsnagging of the anchor.
Inventors
- 👤 R Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:14
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/24; B63B21/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
385 words
An anchor comprising an elongated shank, a cylindrical sleeve open at one end for reception over an end of said shank adjacent one end of said anchor, said sleeve being closed at its opposite end and carrying a hook projecting outwardly from its closed end for securing an anchor line thereto, a plurality of flukes carried by said shAnk adjacent the opposite end of said anchor, each of said flukes including a rod bent intermediately to form two leg portions defining an acute angle therebetween, means securing a leg portion of each of said flukes to the end of said shank at circumferentially spaced locations thereabout and extending in a direction substantially parallel to the axis of said shank, whereby the other leg portions of said flukes project radially outwardly and in a direction toward the one anchor end, means resiliently coupled between said sleeve and the opposite end of said anchor for retaining said sleeve on the end of said shank for anchor line forces of a magnitude less than a predetermined magnitude acting on said sleeve at the one anchor end, said coupling means being responsive to anchor line forces equal to or greater than said predetermined magnitude of force and in a direction away from said opposite anchor end to permit removal of said sleeve from said shank whereby the anchor line forces are transferred from said one anchor end to said opposite anchor end, a second hook projecting from a side of said sleeve at a predetermined circumferential location thereabout, and a third hook carried by said shank adjacent the opposite end of said anchor, said coupling means including a coil spring having opposite ends secured respectively to said second hook on said sleeve and said third hook on said shank, said spring extending between opposite ends of the anchor externally of said shank, secondary means coupled between said first hook on said sleeve and the third hook carried by said shank adjacent the opposite anchor end to preclude separation of said sleeve and anchor upon removal of said sleeve from said anchor, said secondary means including a cable extending from said sleeve through the coils of said spring to the opposite anchor end and having a slack sufficient to permit the sleeve to be removed from the one anchor end.
Claim 2
Dependent Claim
385 words
An anchor comprising an elongated shank, a cylindrical sleeve open at one end for reception over an end of said shank adjacent one end of said anchor, said sleeve being closed at its opposite end and carrying a hook projecting outwardly from its closed end for securing an anchor line thereto, a plurality of flukes carried by said shAnk adjacent the opposite end of said anchor, each of said flukes including a rod bent intermediately to form two leg portions defining an acute angle therebetween, means securing a leg portion of each of said flukes to the end of said shank at circumferentially spaced locations thereabout and extending in a direction substantially parallel to the axis of said shank, whereby the other leg portions of said flukes project radially outwardly and in a direction toward the one anchor end, means resiliently coupled between said sleeve and the opposite end of said anchor for retaining said sleeve on the end of said shank for anchor line forces of a magnitude less than a predetermined magnitude acting on said sleeve at the one anchor end, said coupling means being responsive to anchor line forces equal to or greater than said predetermined magnitude of force and in a direction away from said opposite anchor end to permit removal of said sleeve from said shank whereby the anchor line forces are transferred from said one anchor end to said opposite anchor end, a second hook projecting from a side of said sleeve at a predetermined circumferential location thereabout, and a third hook carried by said shank adjacent the opposite end of said anchor, said coupling means including a coil spring having opposite ends secured respectively to said second hook on said sleeve and said third hook on said shank, said spring extending between opposite ends of the anchor externally of said shank, secondary means coupled between said first hook on said sleeve and the third hook carried by said shank adjacent the opposite anchor end to preclude separation of said sleeve and anchor upon removal of said sleeve from said anchor, said secondary means including a cable extending from said sleeve through the coils of said spring to the opposite anchor end and having a slack sufficient to permit the sleeve to be removed from the one anchor end.
References Cited (Backward Citations)
US3797443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |