US3884024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisting device for the SZ twisting of electrical cables
Assignee: Siemens AG
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Filing: 1973-06-21
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Granted: 1975-05-20
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Expires: 1993-06-21
Abstract
Abstract An improved twisting device for imparting a twist to the stranding elements of electrical cables, which twist alternates from section to section, in which two fixed twisting heads have installed between them a pair of movable twisting heads on a common frame which is moved back and forth thereby forming a pair of accumulators of alternatingly variable size as the movable twisting heads are moved back and forth.
Inventors
- 👤 Ulrich Oestreich
- 👤 Wolfgang Katzschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:28
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/02; H01B13/0235; H01B13/0264; D; D07; D07B; D07B3/00; D07B3/005; D07B2207/00; D07B2207/40; D07B2207/4018
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
An SZ twisting device for twisting the stranding elements of a cable so as to form a stranded unit which has a twist direction which changes from section to section comprising: a. an unwinding device for the stranding elements; b. a drawing and take up device; c. between said unwinding device and said drawing and take up device, an accumulator which has a storage content which may be increased and decreased comprising: 1. a first stationary rotating twisting head; 2. a second rotating twisting head movable with respect to said first twisting head in the direction of the twisting axis; 3. means for moving said second twisting head back and forth with respect to said first twisting head; and 4. each of said first and second twisting heads having rollers therein, and each of said first and second twisting heads gripping the stranding elements which are being combined into a stranded unit frictionally in the direction of the circumference of the rollers within said twisting heads so as to permit ease of pulling through of the stranded unit and holding the stranded unit in a stretched condition between the twisting heads.
Claim 2
Dependent Claim
191 words
An SZ twisting device for twisting the stranding elements of a cable so as to form a stranded unit which has a twist direction which changes from section to section comprising: a. an unwinding device for the stranding elements; b. a drawing and take up device; c. between said unwinding device and said drawing and take up device, an accumulator which has a storage content which may be increased and decreased comprising: 1. a first stationary rotating twisting head; 2. a second rotating twisting head movable with respect to said first twisting head in the direction of the twisting axis; 3. means for moving said second twisting head back and forth with respect to said first twisting head; and 4. each of said first and second twisting heads having rollers therein, and each of said first and second twisting heads gripping the stranding elements which are being combined into a stranded unit frictionally in the direction of the circumference of the rollers within said twisting heads so as to permit ease of pulling through of the stranded unit and holding the stranded unit in a stretched condition between the twisting heads.
Claim 3
Dependent Claim
72 words
The invention according to claim 1 and further including a second accumulator in tandem with said first accumulator said second accumulator having a third movable twisting head and a fourth stationary twisting head and wherein said means to move said second twisting head comprises a frame in which said second and third twisting heads are mounted and and means to move said frame back and forth in the direction of the strand.
Claim 4
Dependent Claim
20 words
a second rotating twisting head movable with respect to said first twisting head in the direction of the twisting axis;
Claim 5
Dependent Claim
20 words
a second rotating twisting head movable with respect to said first twisting head in the direction of the twisting axis;
Claim 6
Dependent Claim
18 words
means for moving said second twisting head back and forth with respect to said first twisting head; and
Claim 7
Dependent Claim
18 words
means for moving said second twisting head back and forth with respect to said first twisting head; and
Claim 8
Dependent Claim
33 words
The invention according to claim 2 wherein the speeds of rotation of at least one of said first and third twisting heads is different than that of said second and fourth twisting heads.
Claim 9
Dependent Claim
36 words
The invention according to claim 2 wherein the speed of rotation of at least one of said first and third twisting heads is varied with respect to the speed of said second and fourth twisting heads.
Claim 10
Dependent Claim
71 words
each of said first and second twisting heads having rollers therein, and each of said first and second twisting heads gripping the stranding elements which are being combined into a stranded unit frictionally in the direction of the circumference of the rollers within said twisting heads so as to permit ease of pulling through of the stranded unit and holding the stranded unit in a stretched condition between the twisting heads.
Claim 11
Dependent Claim
71 words
each of said first and second twisting heads having rollers therein, and each of said first and second twisting heads gripping the stranding elements which are being combined into a stranded unit frictionally in the direction of the circumference of the rollers within said twisting heads so as to permit ease of pulling through of the stranded unit and holding the stranded unit in a stretched condition between the twisting heads.
Claim 12
Dependent Claim
117 words
The invention according to claim 4, wherein each of said first and second twisting heads comprise: a. at least one pair of rollers; b. means supporting said rollers on parallel axes disposed opposite each other such that a strand may be gripped between said rollers and wherein each roller includes; c. a groove running about the circumference of the roller over the major portion of the roller running surface width; and d. a friction lining made of an elastic material embedded in said groove and bonded to the bottom thereof in a manner such that a hollow space is formed between the bottom of the groove and the portion of said lining forming the roller running surface.
Claim 13
Dependent Claim
38 words
The invention according to claim 5, wherein said friction lining has a U shape with the legs of the U bonded to the bottom of said groove and with the base of the U forming the running surface.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |