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US4479029A
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Bipolar flexible water-cooled cable
Assignee: TOLIYATTINSKY POLITEKHNICHESKY INSTITUT USSR AN INSTITUTION OF USSR
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Filing: 1981-01-28
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Granted: 1984-10-23
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Expires: 2001-01-28
Abstract
Abstract A bipolar flexible water-cooled cable includes a positive conductor and one or more return conductors. The positive conductor extends along the longitudinal axis of the cable and is placed in an insulating sheath so that a gap is provided between the positive conductor and insulating sheath for passage of a cooling agent. Return conductors are wound on the insulating sheath at an angle α, equal to 15° to 82°, to the longitudinal axis of the cable. The positive and return conductors are placed in a hose of an insulating material. The diameter D 0 of the return conductor and the diameter D 1 of the positive conductor are determined by the relationship ##EQU1## where n is the number of return conductors. The cable is intended primarily to be used in welding to connect a power transformer with a portable welding gun.
Inventors
- 👤 Mikhail D. Banov
- 👤 Anatoly I. Oshkin
- 👤 Alexandr N. Chernyshev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:16
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/001
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A bipolar flexible water-cooled cable comprising a positive conductor and one or more return conductors, which are insulated from said positive conductor, said positive and return conductors being placed in a hose of an insulating material, wherein the improvement comprises the positive conductor extending along the cable axis and positioned in an insulating sheath with a gap between the positive conductor and said insulating sheath for passage of a cooling agent; and said one or more return conductors being wound on the insulating sheath at an angle=15° to 82° to the longitudinal axis of the cable, the diameter D o of the return conductor and the diameter D 1 of the positive conductor being related as follows: ##EQU11## where n is the number of said return conductors.
Claim 2
Dependent Claim
127 words
A bipolar flexible water-cooled cable comprising a positive conductor and one or more return conductors, which are insulated from said positive conductor, said positive and return conductors being placed in a hose of an insulating material, wherein the improvement comprises the positive conductor extending along the cable axis and positioned in an insulating sheath with a gap between the positive conductor and said insulating sheath for passage of a cooling agent; and said one or more return conductors being wound on the insulating sheath at an angle=15° to 82° to the longitudinal axis of the cable, the diameter D o of the return conductor and the diameter D 1 of the positive conductor being related as follows: ##EQU11## where n is the number of said return conductors.
Claim 3
Dependent Claim
26 words
A bipolar flexible water-cooled cable as claimed in claim 1, wherein the return conductors are spaced at a distance equal to about 0.15 of their diameter.
Claim 4
Dependent Claim
51 words
A bipolar flexible water-cooled cable as claimed in claims 1 or 2, wherein the value of α is selected so as to satisfy the following condition: ##EQU12## where K 1 is a coefficient which indicates the distance between the axes of the positive and return conductors and is equal to: ##EQU13##
Claim 5
Dependent Claim
18 words
A bipolar flexible water-cooled cable as claimed in claims 1 or 2 wherein the return conductors are flat.
Claim 6
Dependent Claim
41 words
A bipolar flexible water-cooled cable as claimed in claim 4, wherein there are three return conductors and the width (B) and thickness (δ) of the return conductors are selected so as to meet these conditions: B=D.sub.1 (1.9 cos α-0.14), and ##EQU14##
References Cited (Backward Citations)
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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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |