US4945191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curled electrical conductor cord
Assignee: Toyobo Co Ltd
•
Filing: 1988-08-03
•
Granted: 1990-07-31
•
Expires: 2008-08-03
Abstract
Abstract A curled electrical conductor cord is disclosed that comprises at least one core wire and a sheath layer covering the core wire, the core wire having at least one conductor covered with an insulating layer. The cord has a diameter of 1 mm or more, or has a cross-sectional area of 1 mm 2 or more. The vertical stretch L 0 of the curled portion of the cord by its own weight is 30% or less. The vertical stretch L 50 of the curled portion of the cord under a load of 50 g is 200% or more.
Inventors
- 👤 Mamoru Satsuka
- 👤 Hironobu Furusawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/44; H01B3/443; H01B7/00; H01B7/06; H01B7/065
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
186 words
An electrical conductor cord including a curled portion, said cord comprising at least one core wire and a sheath layer covering said core wire, said core wire having at least one conductor consisting essentially of at least one solid wire and covered with an insulating layer, said cord having a diameter of at least 1 mm when circular in cross-section, or a cross-sectional area of at least 1 mm 2 when non-circular in cross section, said insulating layer consisting essentially of crystalline copolyester selected from the group consisting of polyester-polyester block copolymer and polyester-polyether block copolymer, said polyester-polyester block copolymer comprising crystalline aromatic polyester segments and polylactone segments, said polyester-polyether block copolymer comprising crystalline aromatic polyester segments and aliphatic polyether segments, and said crystalline copolyester having a melting point of at least 180° C. and Shore D hardness of from 40 to 80, and wherein vertical stretch L 0 of the curled portion of said cord by its own weight is 30% or less and vertical stretch L 50 of the curled portion of said cord under a load of 50 g is at least 200%.
Claim 2
Dependent Claim
186 words
An electrical conductor cord including a curled portion, said cord comprising at least one core wire and a sheath layer covering said core wire, said core wire having at least one conductor consisting essentially of at least one solid wire and covered with an insulating layer, said cord having a diameter of at least 1 mm when circular in cross-section, or a cross-sectional area of at least 1 mm 2 when non-circular in cross section, said insulating layer consisting essentially of crystalline copolyester selected from the group consisting of polyester-polyester block copolymer and polyester-polyether block copolymer, said polyester-polyester block copolymer comprising crystalline aromatic polyester segments and polylactone segments, said polyester-polyether block copolymer comprising crystalline aromatic polyester segments and aliphatic polyether segments, and said crystalline copolyester having a melting point of at least 180° C. and Shore D hardness of from 40 to 80, and wherein vertical stretch L 0 of the curled portion of said cord by its own weight is 30% or less and vertical stretch L 50 of the curled portion of said cord under a load of 50 g is at least 200%.
Claim 3
Dependent Claim
18 words
An electrical conductor cord according to claim 1 wherein said vertical stretch L 0 is 10% or less.
Claim 4
Dependent Claim
45 words
An electrical conductor cord according to claim 1, wherein said solid wires are selected from the group consisting of thin wires having a diameter of 0.1 mm or less, thin foil wires having a cross-sectional area of 0.01 mm 2 or less, and combinations thereof.
Claim 5
Dependent Claim
25 words
An electrical conductor cord according to claim 1, wherein said sheath layer consists essentially of polyester elastomer having Shore D hardness of 60 or less.
Claim 6
Dependent Claim
35 words
An electrical conductor cord according to claim 1, wherein said sheath layer is made of a composition comprising polyvinyl chloride and polyester elastomer, the proportion of said polyvinyl chloride being at least 50% by weight.
Claim 7
Dependent Claim
56 words
An electrical conductor cord according to claim 1, wherein said sheath layer consists essentially of a polyester elastomer composition having an oxygen index of at least 25.0, and said insulating layer consists essentially of a polyester elastomer composition having an oxygen index of at least 22.0 and a modulus of impact resilience of at least 30%.
Claim 8
Dependent Claim
23 words
An electrical conductor cord according to claim 1, wherein said sheath layer consists essentially of a composition of polyester elastomer and halogenated polyolefin.
Claim 9
Dependent Claim
63 words
An electrical conductor cord according to claim 1, wherein said insulating layer has a thickness of at least 0.1 mm and comprises a polyester block copolymer having a melting point of 180° C. to 240° C., and wherein said sheath layer has a thickness of at least 0.2 mm and comprises a polyester-polyether block copolymer having Shore D hardness of 60 or less.
Claim 10
Dependent Claim
118 words
An electrical conductor cord including a curled portion, said cord comprising at least one core wire and a sheath layer covering said core wire, said core wire having at least one conductor covered with an insulating layer, said cord having a diameter of at least 1 mm when circular in cross-section, or a cross-sectional area of at least 1 mm 2 when non-circular in cross section, said insulating layer consisting essentially of polyester-polyester block copolymer, and wherein vertical stretch L 0 of the curled portion of said cord by its own weight is 30% or less and vertical stretch L 50 of the curled portion of said cord under a load of 50 g is at least 200%.
Claim 11
Dependent Claim
118 words
An electrical conductor cord including a curled portion, said cord comprising at least one core wire and a sheath layer covering said core wire, said core wire having at least one conductor covered with an insulating layer, said cord having a diameter of at least 1 mm when circular in cross-section, or a cross-sectional area of at least 1 mm 2 when non-circular in cross section, said insulating layer consisting essentially of polyester-polyester block copolymer, and wherein vertical stretch L 0 of the curled portion of said cord by its own weight is 30% or less and vertical stretch L 50 of the curled portion of said cord under a load of 50 g is at least 200%.
Claim 12
Dependent Claim
25 words
An electrical conductor cord according to claim 9, wherein said sheath layer consists essentially of polyester elastomer having Shore D hardness of 60 or less.
Claim 13
Dependent Claim
35 words
An electrical conductor cord according to claim 9, wherein said sheath layer is made of a composition comprising polyvinyl chloride and polyester elastomer, the proportion of said polyvinyl chloride being at least 50% by weight.
Claim 14
Dependent Claim
56 words
An electrical conductor cord according to claim 9, wherein said sheath layer consists essentially of a polyester elastomer composition having an oxygen index of at least 25.0, and said insulating layer consists essentially of a polyester elastomer composition having an oxygen index of at least 22.0 and a modulus of impact resilience of at least 30%.
Claim 15
Dependent Claim
23 words
An electrical conductor cord according to claim 9, wherein said sheath layer consists essentially of a composition of polyester elastomer and halogenated polyolefin.
Claim 16
Dependent Claim
63 words
An electrical conductor cord according to claim 9, wherein said insulating layer has a thickness of at least 0.1 mm and comprises a polyester block copolymer having a melting point of 180° C. to 240° C., and wherein said sheath layer has a thickness of at least 0.2 mm and comprises a polyester-polyether block copolymer having Shore D hardness of 60 or less.
References Cited (Backward Citations)
GB1229442A
Cited
US3953650A
Cited
US3941908A
Cited
US4090763A
Cited
US4166881A
Cited
JPS581484A
Cited
DE3414913A1
Cited
JPS6217909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |