US4102117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire twisting method and apparatus
Assignee: AT&T Inc
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Filing: 1976-06-25
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Granted: 1978-07-25
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Expires: 1996-06-25
Abstract
Abstract A twisted pair of wires is produced by drawing two insulated wires from two supply reels while rotating one wire supply reel about the other. A capstan and tachometer measure the linear rate at which the twisted pair is being drawn. The output of the tachometer is controllably and variably divided and used to control a power inverter that drives a motor which rotates the one wire supply reel about the other. The variable ratio between the linear wire movement and the rotary or twisting movement is controlled by a random generator producing a series of numbers representing length per twist of the twisted pair, between fixed limits.
Inventors
- 👤 Georg Christian Ernst Dornberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:08
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50; H01; H01B; H01B13/00; H01B13/02; H01B13/0214
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A method for controlling the twist length of a pair of twisted wires wherein one wire is wrapped around the other wire while the twisted pair is pulled by a capstan and having means for driving the wrapping means and means for pulling the twisted pair, a means for maintaining a speed ratio between the pulling means and the wrapping means characterized by: generating a series of pulses having a frequency representative of the linear travel of the twisted pair; electronically altering the frequency of the pulses generated; and driving the wrapping means at a rotational speed proportional to the altered frequency of the pulses.
Claim 2
Independent Claim
105 words
A method for controlling the twist length of a pair of twisted wires wherein one wire is wrapped around the other wire while the twisted pair is pulled by a capstan and having means for driving the wrapping means and means for pulling the twisted pair, a means for maintaining a speed ratio between the pulling means and the wrapping means characterized by: generating a series of pulses having a frequency representative of the linear travel of the twisted pair; electronically altering the frequency of the pulses generated; and driving the wrapping means at a rotational speed proportional to the altered frequency of the pulses.
Claim 3
Dependent Claim
33 words
A method according to claim 1 including manually controlling the proportionality between the pulses generated responsive to the linear speed of the twisted pair and the speed of rotation of the wrapping means.
Claim 4
Dependent Claim
32 words
A method according to claim 1 including randomly varying the proportionality between the pulses generated responsive to linear speed of the twisted pair and the speed of rotation of the wrapping means.
Claim 5
Dependent Claim
108 words
In an apparatus for twisting two wires to form a twisted pair having a capstan with a rotational speed representative of the linear speed of the twisted pair; means for twisting the wires at an angular speed; means responsive to the linear speed of the twisted pair for generating a series of pulses having a frequency proportional to the linear speed of the twisted pair; means responsive to the frequency of the pulses for driving the twisting means at a speed proportional to the frequency of the pulses, and means for varying the ratio between the frequency of the pulses generated and the speed of the twisting means.
Claim 6
Dependent Claim
108 words
In an apparatus for twisting two wires to form a twisted pair having a capstan with a rotational speed representative of the linear speed of the twisted pair; means for twisting the wires at an angular speed; means responsive to the linear speed of the twisted pair for generating a series of pulses having a frequency proportional to the linear speed of the twisted pair; means responsive to the frequency of the pulses for driving the twisting means at a speed proportional to the frequency of the pulses, and means for varying the ratio between the frequency of the pulses generated and the speed of the twisting means.
Claim 7
Dependent Claim
25 words
An apparatus according to claim 4 wherein the varying means comprises a frequency divider; and means for manually varying the divisor of the frequency divider.
Claim 8
Dependent Claim
41 words
An apparatus according to claim 4 wherein the varying means comprises a frequency divider having the divisor controllable in response to a code input and means for applying to the frequency divider as its code input a series of random numbers.
Claim 9
Dependent Claim
82 words
An apparatus according to claim 6 wherein the applying means comprises: a first counter having at least two portions, a most significant portion and a least significant portion; means for advancing the first counter at a regular rate; means responsive to the least significant portion of the contents of the first counter for sampling the contents of the first counter at random intervals; and means responsive to the sampling means for storing the contents of the first counter at said random intervals.
Claim 10
Dependent Claim
84 words
An apparatus according to claim 7 wherein the sampling means comprises: a second counter for storing the least significant portion of the prior contents of the storing means each time the contents of the first counter is stored in the storing means; means for decrementing the contents of the second counter at regular intervals different than the regular rate for advancing the first counter; and means responsive to a zero contents of the second counter for issuing a sampling signal to the storing means.
Claim 11
Dependent Claim
47 words
An apparatus according to claim 7 further including means for recognizing when the first counter has achieved a maximum permissible count and in response thereto for resetting the first counter to a minimum count from which the first counter is to count toward the maximum permissible count.
Claim 12
Dependent Claim
106 words
An apparatus according to claim 9 wherein the the recognizing and resetting means comprises: means for generating a signal representative of the maximum count that the first counter is to achieve; means for generating a signal representative of the minimum count from which the first counter is to begin counting; a comparator for comparing the contents of the first counter with the signal from the maximum generating means; and; means responsive to recognition by the comparator of coincidence between the contents of the first counter and the signal from the maximum generating means for setting the first counter to the signal from the minimum generating means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |