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US4347487A
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US
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High frequency attenuation cable
Assignee: Raychem Corp
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Filing: 1980-11-25
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Granted: 1982-08-31
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Expires: 2000-11-25
Abstract
Abstract A high frequency attenuation cable which includes: a conductor; a high frequency absorption medium surrounding the conductor for attenuating high frequency energy through the cable; dielectric surrounding the absorption medium; electrical shielding surrounding the dielectric confining the high frequency energy to the absorption medium; and electrically conductive outer jacketing surrounding the shielding preventing the shielding from becoming a high frequency transmission line.
Inventors
- 👤 Albert R. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:32
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/12; H01B11/14; H01B11/146
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A high frequency attenuation cable comprising: a conductor; a high frequency absorption medium for attenuating high frequency energy through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; electrically conductive shielding means confining high frequency energy to the absorption medium, the shielding means surrounding the dielectric; and electrically conductive outer jacketing means preventing the shielding means from becoming a high frequency transmission line, the jacketing means surrounding the shielding means.
Claim 2
Dependent Claim
74 words
A high frequency attenuation cable comprising: a conductor; a high frequency absorption medium for attenuating high frequency energy through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; electrically conductive shielding means confining high frequency energy to the absorption medium, the shielding means surrounding the dielectric; and electrically conductive outer jacketing means preventing the shielding means from becoming a high frequency transmission line, the jacketing means surrounding the shielding means.
Claim 3
Dependent Claim
23 words
The cable as set forth in claim 1 wherein the outer jacketing means is made from a material having a high magnetic saturation.
Claim 4
Dependent Claim
20 words
The device as set forth in claim 2 wherein the outer jacketing means is made from a carbon filled elastomer.
Claim 5
Dependent Claim
20 words
The device as set forth in claim 2 wherein the outer jacketing means is made from a ferrite filled elastomer.
Claim 6
Dependent Claim
25 words
The device as set forth in claim 1 or claim 2 wherein the high frequency absorption medium comprises a lossy material of high magnetic permeability.
Claim 7
Dependent Claim
21 words
The device as set forth in claim 5 wherein the high frequency absorption medium comprises a material of low chemical activity.
Claim 8
Dependent Claim
28 words
The device as set forth in claim 5 wherein the high frequency absorption medium comprises a lossy layer of finely divided pure iron particles in a filled elastomer.
Claim 9
Dependent Claim
16 words
The device as set forth in claim 5 wherein the dielectric comprises material made of Tefzel.
Claim 10
Dependent Claim
91 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable comprises: a conductor; a high frequency absorption medium for attenuating high frequency energy through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; electrically conductive shielding means confining high frequency energy to the absorption medium, the shielding means surrounding the dielectric; each cable being provided with an electrically conductive outer jacketing means preventing the shielding means from becoming a high frequency electrical energy conductor, the jacketing means surrounding the shielding means.
Claim 11
Dependent Claim
91 words
A high frequency attenuation harness comprising: a plurality of high frequency attenuation cables wherein each cable comprises: a conductor; a high frequency absorption medium for attenuating high frequency energy through the cable, the absorption medium surrounding the conductor; dielectric surrounding the absorption medium; electrically conductive shielding means confining high frequency energy to the absorption medium, the shielding means surrounding the dielectric; each cable being provided with an electrically conductive outer jacketing means preventing the shielding means from becoming a high frequency electrical energy conductor, the jacketing means surrounding the shielding means.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |