Patent US3917898A successfully refreshed from Google Patents.
US3917898A
Expired / Lapsed
US
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Water-cooled cable
Assignee: SWCC Corp
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Filing: 1974-12-11
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Granted: 1975-11-04
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Expires: 1994-12-11
Abstract
Abstract A water-cooled cable having high flexibility and improved twisting and collapsing resistance comprising a stranded conductor and a water-tight hose shielding said stranded conductor in which said watertight hose is composed of an outer shell having a groove or grooves on the peripheral surface, a reinforcing layer adjacent to the outer shell having corrugations corresponding to the groove or grooves on the periphery of the outer shell, and a strong inner member of a flexible material having a relatively large Young''s modulus.
Inventors
- 👤 Seijiro Iketani
- 👤 Hiromi Fukuda
- 👤 Iwao Shirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:08
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/42; H01B7/421; H01B7/423; H01B7/425; H01B7/17; H01B7/18; H01B7/1875
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
182 words
A water-cooled cable having a cross-sectional area of more than 1000 square milimeters, said cable comprising: 1. a stranded conductor and 2. a water-tight hose shielding said stranded conductor and forming a water passage between said stranded conductor and said hose, said hose comprising, from outside to inside: a. an outer shell composed on a wear-and heat-resistant material having a Young''s modulus of between 0.18 X 100 kg/cm2 and 0.30 X 100 kg/cm2 and having a groove or grooves on its peripheral surface; b. a reinforcing layer having corrugations therein corresponding to the groove or grooves on the periphery of said outer shell; c. a soft inner member composed of a flexible material having a Young''s modulus between 0.18 X 100kg/cm2 and 0.30 X 100 kg/cm2; and d. a strong inner member composed of a flexible material having a Young''s modulus between 0.25 X 100kg/cm2 and 0.40 X 100 kg/cm2, said soft inner member being located in gaps between said strong inner layer and the corrugations in said reinforcing layer and said strong inner layer contacting said reinforcing layer at the corrugations.
Claim 2
Dependent Claim
182 words
A water-cooled cable having a cross-sectional area of more than 1000 square milimeters, said cable comprising: 1. a stranded conductor and 2. a water-tight hose shielding said stranded conductor and forming a water passage between said stranded conductor and said hose, said hose comprising, from outside to inside: a. an outer shell composed on a wear-and heat-resistant material having a Young''s modulus of between 0.18 X 100 kg/cm2 and 0.30 X 100 kg/cm2 and having a groove or grooves on its peripheral surface; b. a reinforcing layer having corrugations therein corresponding to the groove or grooves on the periphery of said outer shell; c. a soft inner member composed of a flexible material having a Young''s modulus between 0.18 X 100kg/cm2 and 0.30 X 100 kg/cm2; and d. a strong inner member composed of a flexible material having a Young''s modulus between 0.25 X 100kg/cm2 and 0.40 X 100 kg/cm2, said soft inner member being located in gaps between said strong inner layer and the corrugations in said reinforcing layer and said strong inner layer contacting said reinforcing layer at the corrugations.
Claim 3
Dependent Claim
160 words
a water-tight hose shielding said stranded conductor and forming a water passage between said stranded conductor and said hose, said hose comprising, from outside to inside: a. an outer shell composed on a wear-and heat-resistant material having a Young''s modulus of between 0.18 X 100 kg/cm2 and 0.30 X 100 kg/cm2 and having a groove or grooves on its peripheral surface; b. a reinforcing layer having corrugations therein corresponding to the groove or grooves on the periphery of said outer shell; c. a soft inner member composed of a flexible material having a Young''s modulus between 0.18 X 100kg/cm2 and 0.30 X 100 kg/cm2; and d. a strong inner member composed of a flexible material having a Young''s modulus between 0.25 X 100kg/cm2 and 0.40 X 100 kg/cm2, said soft inner member being located in gaps between said strong inner layer and the corrugations in said reinforcing layer and said strong inner layer contacting said reinforcing layer at the corrugations.
Claim 4
Dependent Claim
160 words
a water-tight hose shielding said stranded conductor and forming a water passage between said stranded conductor and said hose, said hose comprising, from outside to inside: a. an outer shell composed on a wear-and heat-resistant material having a Young''s modulus of between 0.18 X 100 kg/cm2 and 0.30 X 100 kg/cm2 and having a groove or grooves on its peripheral surface; b. a reinforcing layer having corrugations therein corresponding to the groove or grooves on the periphery of said outer shell; c. a soft inner member composed of a flexible material having a Young''s modulus between 0.18 X 100kg/cm2 and 0.30 X 100 kg/cm2; and d. a strong inner member composed of a flexible material having a Young''s modulus between 0.25 X 100kg/cm2 and 0.40 X 100 kg/cm2, said soft inner member being located in gaps between said strong inner layer and the corrugations in said reinforcing layer and said strong inner layer contacting said reinforcing layer at the corrugations.
Claim 5
Dependent Claim
23 words
A water-cooled cable as claimed in claim 1 wherein said strong inner member is composed of rubber tape wound with a constant pitch.
Claim 6
Dependent Claim
23 words
A water-cooled cable as claimed in claim 1 wherein said soft inner member is composed of rubber tape wound with a constant pitch.
Claim 7
Dependent Claim
28 words
A water-cooled cable as claimed in claim 1 which has been vulcanized, causing said strong inner member and said soft inner member to adhere to each other strongly.
Claim 8
Dependent Claim
24 words
A water-cooled cable as claimed in claim 1 wherein said groove is spiral and winds around said peripheral surface with a substantially constant pitch.
Claim 9
Dependent Claim
37 words
A water-cooled cable as claimed in claim 1 wherein a plurality of circular grooves are formed on the peripheral surface of said hose about the circumference thereof and said grooves are spaced approximately equidistant one from another.
Claim 10
Dependent Claim
16 words
A water-cooled cable as claimed in claim 1 wherein said outer shell is composed of chloroprene.
Claim 11
Dependent Claim
17 words
A water-cooled cable as claimed in claim 1 wherein said reinforcing layer is composed of sail cloth.
Claim 12
Dependent Claim
17 words
A water-cooled cable as claimed in claim 1 wherein said reinforcing layer is composed of strong rayon.
Claim 13
Dependent Claim
23 words
A water-cooled cable as claimed in claim 1 wherein said soft inner member is formed by blending natural rubber with styrene butadiene rubber.
Claim 14
Dependent Claim
23 words
A water-cooled cable as claimed in claim 1 wherein said strong inner member is formed by blending natural rubber with styrene butadiene rubber.
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |