US4486721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency attenuation core and cable
Assignee: Raychem Corp
•
Filing: 1981-12-07
•
Granted: 1984-12-04
•
Expires: 2001-12-07
Abstract
Abstract Disclosed is a high frequency attenuation core and cable. The core includes a conductor surrounded by a high frequency energy absorbing medium, then surrounded by a dielectric, and then surrounded by an outer layer made from a material having a high complex dielectric constant. The cable includes the above described core surrounded by an electromagnetic interference (EMI) shield which is further surrounded by a conductive layer. The cable and core as described above may be used in harness applications wherein a plurality of cores and/or cables as described above are surrounded by a gross shield. In addition, when the cores described above are used in multi-core applications, they may individually include an additional EMI shield for greater electromagnetic interference protection.
Inventors
- 👤 Rajendra S. Cornelius
- 👤 Hans E. Lunk
- 👤 Albert R. Martin
- 👤 Mark D. Mendenhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being made from a titanate loaded polymer.
Claim 2
Dependent Claim
63 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being made from a titanate loaded polymer.
Claim 3
Dependent Claim
66 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being conductive and being made from a ferrite loaded polymer.
Claim 4
Dependent Claim
66 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being conductive and being made from a ferrite loaded polymer.
Claim 5
Dependent Claim
63 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being made from a aluminum loaded polymer.
Claim 6
Dependent Claim
63 words
A high frequency attenuation cable core comprising: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through a cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the dielectric, said outer layer being made from a aluminum loaded polymer.
Claim 7
Dependent Claim
40 words
A high frequency attenuation cable having the cable core as set forth in claims 1, 2 or 3 wherein the outer layer is surrounded by EMI shielding means and wherein an electrically conductive outer layer surrounds the EMI shielding means.
Claim 8
Dependent Claim
84 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being a titanate loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 9
Dependent Claim
84 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being a titanate loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 10
Dependent Claim
87 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium; said outer layer being conductive and being a ferrite loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 11
Dependent Claim
87 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium; said outer layer being conductive and being a ferrite loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 12
Dependent Claim
84 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being an aluminum loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 13
Dependent Claim
84 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cores wherein each core includes: at least one conductor; a high frequency absorption medium for attenuating high frequency energy propagating through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being an aluminum loaded polymer; and the plurality of cores surrounded by a common EMI shielding means.
Claim 14
Dependent Claim
21 words
The harness as set forth in claims 5, 6, or 7 including an outer protective jacket surrounding the EMI shielding means.
Claim 15
Dependent Claim
103 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being made from a titanate loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
Claim 16
Dependent Claim
103 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being made from a titanate loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
Claim 17
Dependent Claim
106 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being conductive and being made from a ferrite loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
Claim 18
Dependent Claim
106 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being conductive and being made from a ferrite loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
Claim 19
Dependent Claim
103 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being made from an aluminum loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
Claim 20
Dependent Claim
103 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable includes: a core having at least one conductor; a high frequency absorption medium for attenuating high frequency through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; and an outer layer made from material having a high complex dielectric constant directly surrounding the absorption medium, said outer layer being made from an aluminum loaded polymer; and EMI shielding means surrounding each core; an electrically conductive outer layer surrounding each EMI shielding means; and the plurality of cables surrounded by a protective outer jacket.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |