Patent US5987401A successfully refreshed from Google Patents.
Patent FR412879A successfully refreshed from Google Patents.
US3799005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum winch
Assignee: Individual
•
Filing: 1972-12-22
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Granted: 1974-03-26
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Expires: 1992-12-22
Abstract
Abstract The present drum winch is especially suitable for use on sailing vessels and comprises in its basic concept two pairs of planetary gear wheels which cooperate with a drive wheel, a disk, and a jack wheel whereby a large step-up ratio may be accomplished in one direction of rotation of the drum shaft. In addition, a slipping or torque release clutch may be arranged operatively between the jack wheel and the disk and a braking action may be applied to the jack wheel by means of pawls and ratchet wheels in one rotational direction whereby a large step-up ratio is obtained in one rotational direction while in the opposite rotational direction a 1:1 transmission or a large reduction or step-down ratio is obtained. In further modification worm gear means may be provided which are connected to or coupled with the jack wheel when the gear is driven through the disk or which are connected to or coupled with the disk when the gear is driven through the jack wheel whereby an additional large step-down ratio is accomplished for a sensitive back and forth rotation of the winch.
Inventors
- 👤 G Koehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:24
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/14; B66D1/22; B66D1/225; B66D1/04
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
317 words
In a drum winch wherein a drum is rotatably mounted relative to a drum shaft which shaft is rotatable selectively in both directions, said drum being rotatable by toothed wheel gear means including a ratchet mechanism whereby the direction of drum rotation is the same independent of the direction of shaft rotation and whereby due to said ratchet mechanism the drum may be rotated with different rotational speeds depending upon the direction of rotation of the drum shaft, and wherein releasable brake means are arranged for cooperation with said drum when the drum rotates reversely, the improvement comprising a disk, first means for controlling the position of said disk relative to said drum shaft, a first pair of planetary gear wheels, means for rotatably supporting said first pair of planetary gear wheels in said disk, a second pair of planetary gear wheels, means for rotatably supporting said second pair of planetary gear wheels in said disk, jack wheel means, second means for controlling the position of said jack wheel means relative to said drum shaft, said first and second pairs of planetary gear wheels being arranged relative to said jack wheel means for intermeshing with the jack wheel means, drive gear means coupled to said drum, one of said pairs of planetary gear wheels being arranged for coupling said jack wheel means to said drive gear means in a step-up sense, the other of said pairs of planetary gear wheels being arranged for coupling said jack wheel means to said drive gear means in a reduction sense, said first and second pairs of planetary gear wheels being arranged to counteract each other for any rotational direction of the drum shaft, said ratchet mechanism being arranged for interrupting the driving connection between one or the other of the pairs of planetary gears and the respective drive gear means in response to the rotational direction of the drum shaft.
Claim 2
Dependent Claim
317 words
In a drum winch wherein a drum is rotatably mounted relative to a drum shaft which shaft is rotatable selectively in both directions, said drum being rotatable by toothed wheel gear means including a ratchet mechanism whereby the direction of drum rotation is the same independent of the direction of shaft rotation and whereby due to said ratchet mechanism the drum may be rotated with different rotational speeds depending upon the direction of rotation of the drum shaft, and wherein releasable brake means are arranged for cooperation with said drum when the drum rotates reversely, the improvement comprising a disk, first means for controlling the position of said disk relative to said drum shaft, a first pair of planetary gear wheels, means for rotatably supporting said first pair of planetary gear wheels in said disk, a second pair of planetary gear wheels, means for rotatably supporting said second pair of planetary gear wheels in said disk, jack wheel means, second means for controlling the position of said jack wheel means relative to said drum shaft, said first and second pairs of planetary gear wheels being arranged relative to said jack wheel means for intermeshing with the jack wheel means, drive gear means coupled to said drum, one of said pairs of planetary gear wheels being arranged for coupling said jack wheel means to said drive gear means in a step-up sense, the other of said pairs of planetary gear wheels being arranged for coupling said jack wheel means to said drive gear means in a reduction sense, said first and second pairs of planetary gear wheels being arranged to counteract each other for any rotational direction of the drum shaft, said ratchet mechanism being arranged for interrupting the driving connection between one or the other of the pairs of planetary gears and the respective drive gear means in response to the rotational direction of the drum shaft.
Claim 3
Dependent Claim
19 words
The drum winch according to claim 1, wherein said toothed wheel gear means comprise sun and planetary gear means.
Claim 4
Dependent Claim
39 words
The drum winch according to claim 1, wherein said first means for controlling the position of said disk relative to said drum shaft comprise means for securing said disk on said drum shaft to rotate with said drum shaft.
Claim 5
Dependent Claim
46 words
The drum winch according to claim 3, wherein said second means for controlling the position of said jack wheel means relative to said drum shaft comprise means for arresting the jack wheel means against rotation, said drum shaft being rotatable relative to said jack wheel means.
Claim 6
Dependent Claim
49 words
The drum winch according to claim 3, wherein said second means for controlling the position of said jack wheel means relative to said drum shaft comprise brake means for applying a braking force to said jack wheel means said drum shaft being rotatable relative to said jack wheel means.
Claim 7
Dependent Claim
43 words
The drum winch according to claim 1, wherein said second means for controlling the position of said jack wheel means relative to said drum shaft comprise means for securing said jack wheel means to said drum shaft to rotate with said drum shaft.
Claim 8
Dependent Claim
43 words
The drum winch according to claim 6, wherein said first means for controlling the position of said disk relative to said drum shaft comprise braking means for applying a braking force to said disk, said drum shaft being rotatable relative to said disk.
Claim 9
Dependent Claim
39 words
The drum winch according to claim 6, wherein said first means for controlling the position of said disk relative to saId drum shaft comprise arresting means for arresting the disk, said drum shaft being rotatable relative to said disk.
Claim 10
Dependent Claim
65 words
The drum winch according to claim 1, wherein said jack wheel means comprise a small sun wheel and a large ring wheel rigidly connected to each other, said drum winch further comprising means for coupling one of said pairs of planetary gear wheels to the large ring wheel and means for coupling the other pair of said planetary gear wheels to the small sun wheel.
Claim 11
Dependent Claim
29 words
The drum winch according to claim 9, wherein said large ring wheel comprises radially inwardly facing gear teeth whereas said small sun wheel comprises radially outwardly facing gear teeth.
Claim 12
Dependent Claim
65 words
The drum winch according to claim 1, wherein said drive gear means comprise a small sun wheel and a large ring wheel rigidly connected to each other, said drum winch futher comprising means for coupling one of said pairs of planetary gear wheels to the large ring wheel and means for coupling the other pair of said planetary gear wheels to the small sun wheel.
Claim 13
Dependent Claim
29 words
The drum winch according to claim 11, wherein said large ring wheel comprises radially inwardly facing gear teeth whereas said small sun wheel comprises radially outwardly facing gear teeth.
Claim 14
Dependent Claim
181 words
The drum winch according to claim 1, wherein the jack wheel means comprise a first large ring wheel with radially inwardly facing gear teeth and a first small sun wheel with radially outwardly facing gear teeth, said drive gear means comprising a second large ring wheel with radially inwardly facing gear teeth and a second small sun wheel with radially outwardly facing gear teeth, said first large ring and small sun wheels being rigidly connected to each other, said second large ring and small sun wheels being rigidly connected to each other, said first small sun wheel being coupled to the second large ring wheel by means of one of said pairs of planetary gear wheels, said first large ring wheel being coupled to the second small sun wheel by means of the other of said pairs of planetary gear wheels, said winch further comprising a reversing gear, and means for rotatably supporting said reversing gear in said disk, said reversing gear being arranged for cooperation with one of said sun wheels and one of said pairs of planetary gear wheels.
Claim 15
Dependent Claim
26 words
The drum winch according to claim 1, further comprising a torque release clutch positioned to couple said jack wheel means and said disk to each other.
Claim 16
Dependent Claim
30 words
The drum winch according to claim 14, wherein said torque release clutch is positioned to couple said disk and said jack wheel means to each other through said drum shaft.
Claim 17
Dependent Claim
46 words
The drum winch according to claim 1, further comprising a ratchet wheel coupled to said jack wheel means, and pawl means arranged for arresting said jack wheel means through said ratchet wheel against rotation in a direction corresponding to the reverse rotational direction of said drum.
Claim 18
Dependent Claim
25 words
The drum winch according to claim 16, further comprising a releasable clutch for coupling said jack wheel means and said ratchet wheel to each other.
Claim 19
Dependent Claim
77 words
The drum winch according to claim 17, further comprising means for supporting said ratchet wheel for axial shifting relative to said pawl means to permit actuating said releasable clutch, said supporting means comprising gear box means with a threaded axial bore, a bearing for taking up axial pressure, threaded position adjusting means received in said threaded axial bore of said gear box means for adjustably supporting said axial pressure bearing means which bear against said ratchet wheel.
Claim 20
Dependent Claim
46 words
The drum winch according to claim 16, further comprising a worm gear means including a worm and a worm gear wheel, means for rotatably supporting said ratchet wheel inside said worm gear wheel, and means for journaling said pawl means also inside said worm gear wheel.
Claim 21
Dependent Claim
18 words
The drum winch according to claim 19, wherein said worm is self-locking relative to said worm gear wheel.
Claim 22
Dependent Claim
42 words
The drum winch according to claim 1, further Comprising a ratchet wheel coupled to said disk, and pawl means positioned for arresting said disk through said ratchet wheel against rotation in a direction corresponding to the reverse rotational direction of said drum.
Claim 23
Dependent Claim
49 words
The drum winch according to claim 1, wherein said pairs of planetary gear wheels include respective shafts, and wherein said ratchet mechanism comprises ratchet wheel and pawl means which are arranged between one of said planetary gear wheels and the respective shaft of the pairs of planetary gear wheels.
Claim 24
Dependent Claim
28 words
The drum winch according to claim 1, wherein said drive gear means comprise an outer circumferential collar, said collar providing a bearing means for said jack wheel means.
Claim 25
Dependent Claim
31 words
The drum winch according to claim 23, further comprising gear box means and roller means for supporting said outer circumferential collar of said drive gear means in said gear box means.
Claim 26
Dependent Claim
28 words
The drum winch according to claim 1, further comprising a supporting bearing block, gear box means, and means for securing said gear box means to said bearing block.
Claim 27
Dependent Claim
39 words
The drum winch according to claim 1, wherein said drum shaft extends axially through the entire drum and the wheel gear means whereby both ends of said drum shaft are provided with means for cooperating with a crank handle.
Claim 28
Dependent Claim
67 words
The drum winch according to claim 1, further comprising torque release clutch means positioned to operatively couple said jack wheel means and said disk to each other, means for axially supporting said torque release clutch means on the drum shaft, housing means, and means for axially adjusting the position of said drum shaft in said housing whereby the braking force of said torque release clutch is adjustable.
Claim 29
Dependent Claim
22 words
The drum winch according to claim 1, further comprising a releasable braking clutch for coupling the drum to the drive gear means.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |