US3873039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winch
Assignee: AKTIEN-GESELLSCHAFT 'WESER'DT197302172307889
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Filing: 1974-02-14
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Granted: 1975-03-25
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Expires: 1994-02-14
Abstract
Abstract A winch which is particularly suitable for deep-sea application has a first rotational storage drum storing a supply of one type of rope, cable or the like, and one or more second rotatable storage drums which also store a supply of such an element, but an element which is different from the first-mentioned one. A pair of driven rotational friction drums are provided which receive a length of one or the other of these elements so that the length is trained about the peripheries of the friction drums to pay out the respective element or take it up when the friction drums rotate. The friction drums each have a center portion such as a hub, and an annular portion which surrounds the hub and is releasably connected to the same. The outer circumferential surface of the annular portion is formed with circumferentially extending grooves in which the respective length of the element being taken up or paid out is accommodated. The annular portion can be exchanged for another one having differently configurated circumferentially extending grooves.
Inventors
- 👤 Horst Harms
- 👤 Hans-Jurgen Kunsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:14
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/60; B66D1/74; B66D1/7405
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
In a winch, particularly in a deep-sea winch, a combination comprising a first rotatable storage drum storing a supply of a first elongated flexible element; at least one second rotatable storage drum storing a supply of a different second elongated flexible element; and a pair of driven rotatable friction drums adapted to receive said elements selectively and to have lengths of said elements trained about the peripheries of said friction drums for paying out and taking-up of the respective element, said friction drums each comprising a center portion and an annular portion surrounding and releasably connected to said center portion and having an outer circumferential surface provided with circumferentially extending grooves.
Claim 2
Dependent Claim
111 words
In a winch, particularly in a deep-sea winch, a combination comprising a first rotatable storage drum storing a supply of a first elongated flexible element; at least one second rotatable storage drum storing a supply of a different second elongated flexible element; and a pair of driven rotatable friction drums adapted to receive said elements selectively and to have lengths of said elements trained about the peripheries of said friction drums for paying out and taking-up of the respective element, said friction drums each comprising a center portion and an annular portion surrounding and releasably connected to said center portion and having an outer circumferential surface provided with circumferentially extending grooves.
Claim 3
Dependent Claim
42 words
A combination as defined in claim 1, wherein said annular portion is composed of at least two curved segments; and further comprising securing means for releasably securing said segments to said center portion for rotation with but not relative to the same.
Claim 4
Dependent Claim
62 words
A combination as defined in claim 1, wherein said grooves are configurated for accommodating a length of one of said elements therein; and further comprising at least one additional annular portion similar to the first-mentioned one but provided with circumferentially extending grooves which are different from the first-mentioned grooves and are dimensioned to accommodate a length of the other of said elements.
Claim 5
Dependent Claim
55 words
A combination as defined in claim 3, wherein each of said annular portions is composed of at least two curved segments; and further comprising securing means for releasably securing the segments of one of said annular portions to said center portion, depending upon which of said elements is to be trained about said friction drums.
Claim 6
Dependent Claim
51 words
A combination as defined in claim 4, wherein said center portion and said curved segments are provided with respective slots in their respective juxtaposed surfaces, said slots extending parallel to the axis of rotation of the respective friction drum; and wherein said securing means comprises keys recieved in the respective slots.
Claim 7
Dependent Claim
61 words
A combination as defined in claim 5, wherein said annular portions each have two opposite axial end faces, and wherein each of said end faces is provided with an annular recess surrounding said center portion; said securing means further comprisIng a ring received in each of said annular recesses, and connecting elements connecting the respective ring to the associated annular portion.
Claim 8
Dependent Claim
50 words
A combination as defined in claim 1, wherein said storage drums are mounted for rotation about spaced parallel axes; and further comprising a guide for guiding one or the other of said elements from the respective storage drum to said friction drums in a direction substantially parallel to said axes.
Claim 9
Dependent Claim
27 words
A combination as defined in claim 7, wherein said friction drums are mounted for rotation about axes of rotation which extend substantially normal to said parallel axes.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |