US3672141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming electric cables
Assignee: International Standard Electric Corp
•
Filing: 1969-12-31
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Granted: 1972-06-27
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Expires: 1989-12-31
Abstract
Abstract A pair of conductors are insulated and twisted together in a continuous operation. Each conductor passes through individual forming means which simultaneously apply insulation to each conductor and means are provided to twist the insulated conductors together.
Inventors
- 👤 Alojzy Tomica
- 👤 John Francis Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:26
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
193 words
A machine for individually insulating a plurality of electrical cable conductors and twisting together the insulated conductors in one continuous operation comprising a frame, a plurality of separate converging paths for feeding individual conductors along said frame and spaced about a longitudinal axis, a plurality of conductor wire supply reels carried on one end of said frame, each said wire supply reel being associated with a respective individual conductor path, a plurality of insulating material supply reels carried on said frame, each insulating material supply reel being associated with a respective individual conductor wire reel of a respective path, a plurality of insulating material forming means carried separately on said frame, each forming means being associated with said respective individual conductor wire reel and spaced along said respective path about said axis, a die spaced longitudinally from said forming means to receive the plurality of twisted insulated conductors, a take-up bobbin spaced from the opposite end of said frame and drawing the insulateD conductors through said forming means and die, said plurality of forming means simultaneously applying longitudinally wrapped insulating material to each individual conductor, and means for twisting the insulated conductors together.
Claim 2
Dependent Claim
193 words
A machine for individually insulating a plurality of electrical cable conductors and twisting together the insulated conductors in one continuous operation comprising a frame, a plurality of separate converging paths for feeding individual conductors along said frame and spaced about a longitudinal axis, a plurality of conductor wire supply reels carried on one end of said frame, each said wire supply reel being associated with a respective individual conductor path, a plurality of insulating material supply reels carried on said frame, each insulating material supply reel being associated with a respective individual conductor wire reel of a respective path, a plurality of insulating material forming means carried separately on said frame, each forming means being associated with said respective individual conductor wire reel and spaced along said respective path about said axis, a die spaced longitudinally from said forming means to receive the plurality of twisted insulated conductors, a take-up bobbin spaced from the opposite end of said frame and drawing the insulateD conductors through said forming means and die, said plurality of forming means simultaneously applying longitudinally wrapped insulating material to each individual conductor, and means for twisting the insulated conductors together.
Claim 3
Dependent Claim
15 words
The device as claimed in claim 1 wherein the insulating material is a paper tape.
Claim 4
Dependent Claim
19 words
The device as claimed in claim 2 wherein the paper tape is coated on one edge with an adhesive.
Claim 5
Dependent Claim
21 words
The device as claimed in claim 1 wherein the insulating material is a plastics/paper laminate applied with the plastics side outermost.
Claim 6
Dependent Claim
19 words
The device as claimed in claim 1 wherein the insulating material is wrapped 1 1/2 times around the conductors.
Claim 7
Dependent Claim
98 words
The machine as claimed in claim 1 including a first rigid non-rotatable frame carrying said conductor-wire supply reels and insulating material supply reels, all of which supply reels are free to rotate about their own axes, a plurality of wire and insulating material guides, a plurality of forming tools, a polishing die, and a first rotatable frame carrying said take-up bobbin, said bobbin being rotatable about its own axis to pull the wires through the machine for the insulation process and rotatable about an axis at right angles to its own axis to twist the insulated conductors together.
Claim 8
Dependent Claim
24 words
The machine as claimed in claim 6, wherein the conductor-wire supply reels are mounted in individual rotatable frames attached to the first non-rotatable frame.
Claim 9
Dependent Claim
107 words
The machine as claimed in claim 1 including a first rotatable longitudinally extending frame positioned symmetrically about said longitudinal axis and carrying said conductor-wire supply reels and insulating material supply reels, all of which supply reels are free to rotate about their own axes, said forming means including a plurality of wire and insulating material guides and a plurality of forming tools, said die being a polishing die, and a rigid non-rotatable frame carrying said take-up bobbin, said bobbin being rotatable about its own axis to pull the wires through the machine for the insulating process, the rotation of said first rotatable frame twisting said conductors together.
Claim 10
Dependent Claim
24 words
The machine as claimed in claim 8 wherein the conductor-wire supply reels are mounted in individual rotatable frames attached to said first rotatable frame.
Claim 11
Dependent Claim
71 words
The machine as claimed in claim 6 wherein four conductors are individually insulated and then twisted together, including a reel attached to the first non-rotatable frame to supply a central string, said four conductors being twisted together around said string to form a quad, and a thread binder attached to the end of the first non-rotatable frame nearest to the take-up bobbin to supply a cotton thread for binding said quad.
Claim 12
Dependent Claim
57 words
The machine as claimed in claim 8 wherein four conductors are individually insulated and then twisted together, including a reel attached to the first rotatable frame to supply a central string, said four conductors being twisted together around said string to form a quad, and a thread binder attached to the non-rotatable frame adjacent the polishing die.
Claim 13
Dependent Claim
25 words
The machine as claimed in claim 1 wherein the forming means include conically-shaped spiral tools which longitudinally wrap the insulating material around the conductor wires.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |