US3679175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing tie-down winch
Assignee: FKI Industries Inc
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Filing: 1969-11-24
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Granted: 1972-07-25
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Expires: 1989-11-24
Abstract
Abstract A tie-down winch for securing to the carrier deck of transporting vehicles loads which offer little frictional resistance to changes in the relative velocity between the load and vehicle. The winch is provided with an energy absorbing component which acts to compensate for any difference in velocity of the two objects in a manner eliminating shock loads. Changes in the energy of the system are transmitted to the energy absorber by linkage means.
Inventors
- 👤 Walker E Drayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07; B60P3/073
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
91 words
An energy absorbing tie-down winch comprising a. a frame; b. incremental tensioning means mounted on said frame for movement relative thereto and having first and second cooperatively engaging members, said first member being movably in one direction relative to the second member to tension a tie-down chain connected to said first member; and c. energy absorbing means connected to the second member of said incremental tensioning means for resiliently opposing movement of said tensioning means in a direction opposite said one direction upon an increase in tension in said tie-down chain.
Claim 2
Dependent Claim
91 words
An energy absorbing tie-down winch comprising a. a frame; b. incremental tensioning means mounted on said frame for movement relative thereto and having first and second cooperatively engaging members, said first member being movably in one direction relative to the second member to tension a tie-down chain connected to said first member; and c. energy absorbing means connected to the second member of said incremental tensioning means for resiliently opposing movement of said tensioning means in a direction opposite said one direction upon an increase in tension in said tie-down chain.
Claim 3
Dependent Claim
28 words
An energy absorbing tie-down winch according to claim 1 wherein: a. said incremental tensioning means comprises a pawl and ratchet mechanism with the ratchet defining said first member.
Claim 4
Dependent Claim
12 words
a bell crank member for each pawl rotatably mounted on said shaft,
Claim 5
Dependent Claim
12 words
a bell crank member for each pawl rotatably mounted on said shaft,
Claim 6
Dependent Claim
20 words
means on said shaft for securing a tie-down chain for wrapping about said shaft upon rotation thereof in one direction,
Claim 7
Dependent Claim
20 words
means on said shaft for securing a tie-down chain for wrapping about said shaft upon rotation thereof in one direction,
Claim 8
Dependent Claim
13 words
two of said ratchet wheels fixed thereto axially outwardly of said pocket drum.
Claim 9
Dependent Claim
13 words
two of said ratchet wheels fixed thereto axially outwardly of said pocket drum.
Claim 10
Dependent Claim
21 words
at least one ratchet wheel fixed to said shaft for rotation therewith in said one direction to tension said tie-down chain,
Claim 11
Dependent Claim
21 words
at least one ratchet wheel fixed to said shaft for rotation therewith in said one direction to tension said tie-down chain,
Claim 12
Dependent Claim
14 words
means on each of said bell crank for supporting one of said pawls, and
Claim 13
Dependent Claim
14 words
means on each of said bell crank for supporting one of said pawls, and
Claim 14
Dependent Claim
107 words
An energy absorbing tie-down winch according to claim 1 wherein said incremental tensioning means comprises: a. a shaft supported for rotation on said frame; b. means on said shaft for securing said tie-down chain for wrapping about said shaft upon rotation thereof in said one direction; c. at least one ratchet wheel fixed to said shaft for rotation therewith, said ratchet wheel defining the first member of the tensioning means; and d. a pawl for each of said ratchet wheels for preventing movement of said ratchet relative to said pawl in a direction opposite said one direction, said pawl defining the second member of the tensioning means.
Claim 15
Dependent Claim
20 words
An energy absorbing tie-down winch according to claim 3 wherein: a. said energy absorbing means includes a resiliently compressible member.
Claim 16
Dependent Claim
26 words
linkage means for each of said bell crank connected at one end to said bell crank and at its other end to said energy absorbing means.
Claim 17
Dependent Claim
26 words
linkage means for each of said bell crank connected at one end to said bell crank and at its other end to said energy absorbing means.
Claim 18
Dependent Claim
63 words
a pawl for each of said ratchet wheels for preventing movement of said ratchet relative to said pawl in a direction opposite said one direction, and c. energy absorbing means connected to said pawl for resiliently opposing movement of said tensioning means in a direction opposite said one direction upon an increase in tension in said down chain, said energy absorbing means including:
Claim 19
Dependent Claim
63 words
a pawl for each of said ratchet wheels for preventing movement of said ratchet relative to said pawl in a direction opposite said one direction, and c. energy absorbing means connected to said pawl for resiliently opposing movement of said tensioning means in a direction opposite said one direction upon an increase in tension in said down chain, said energy absorbing means including:
Claim 20
Dependent Claim
23 words
An energy absorbing tie-down winch comprising: a. a frame; b. incremental tensioning means mounted on said Frame for movement relative thereto and comprising:
Claim 21
Dependent Claim
23 words
An energy absorbing tie-down winch comprising: a. a frame; b. incremental tensioning means mounted on said Frame for movement relative thereto and comprising:
Claim 22
Dependent Claim
45 words
An energy absorbing tie-down winch according to claim 5 wherein: a. said energy absorbing member is mounted on said frame for linear movement upon compression thereof; and b. said linkage means is rotatably connected at its opposite ends to said belcrank and energy absorbing member.
Claim 23
Dependent Claim
44 words
An energy absorbing tie-down winch according to claim 6 wherein: a. pivot pin means is included for pivotally connecting said linkage to said energy absorbing means, said pivot pin means being supported by said frame for linear movement perpendicular to the pivot axis thereof.
Claim 24
Dependent Claim
30 words
An energy absorbing tie-down winch according to claim 7 wherein: a. said frame includes two plate members; and b. said shaft is rotatably supported between said plate members and includes:
Claim 25
Dependent Claim
31 words
An energy absorbing tie-down winch according to claim 8 wherein: a. said plates each include a slot which the opposite ends of the pivot pin means are supported for linear movement.
Claim 26
Dependent Claim
49 words
An energy absorbing tie-down winch according to claim 9 further including: a. tie-down chain guide means pivotally connected to said frame for pivoting movement about an axis parallel to the axis of rotation of said shaft and having a tie-down chain receiving opening axially aligned with said pocket drum.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |