US4960392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded connector assembly with noise suppressor
Assignee: Northern Technologies Ltd
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Filing: 1990-01-16
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Granted: 1990-10-02
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Expires: 2010-01-16
Abstract
Abstract A multiconductor shielded connector is disclosed in which a flexible, compressible double bushing is used between the connector half shells and the multiconductor cable. The double bushing comprises an outer bushing dimensioned to grasp the outer jacket of the cable at the exiting end of the connector. A concentric, longitudinally offset inner bushing is inserted under the shielding (braid or foil) and mates with ridges on the inner surface of the half shells to form a tight, continuous radiation seal. A ferrite ring is inserted into a recess on the inner diameter of the inner bushing to provide noise suppression for signals traveling through the conductors of the cable. The inner and outer bushings are connected together with a fine web which maintains concentricity and axial displacement of the bushings before and during assembly, but which does not interfere with the operation of the connector after assembly.
Inventors
- 👤 Robert G. Dickie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:00
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/719; H01R13/7197
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
42 words
A noise suppression system for electronic equipment, comprising an electrical cable with an outer sheath surrounded by a conductive shielding, and a ferrite cylinder having an insulated outer surface, said ferrite cylinder being inserted between said outer sheath and said conductive shielding.
Claim 2
Dependent Claim
42 words
A noise suppression system for electronic equipment, comprising an electrical cable with an outer sheath surrounded by a conductive shielding, and a ferrite cylinder having an insulated outer surface, said ferrite cylinder being inserted between said outer sheath and said conductive shielding.
Claim 3
Dependent Claim
21 words
The noise suppression system according to claim 1 wherein said ferrite cylinder is split longitudinally to simplify insertion over said sheath.
Claim 4
Dependent Claim
27 words
The noise suppression system according to claim 1 further comprising an electrical connector encapsulating said ferrite cylinder and providing electrical connections for the wires of said cable.
Claim 5
Dependent Claim
28 words
The noise suppression system according to claim 3 further comprising means, including said insulated ferrite cylinder, for urging said conductive shielding against the inner surface of said connector.
Claim 6
Dependent Claim
24 words
The noise suppression system according to claim 3 further comprising means, not including said insulated ferrite cylinder, for providing strain relief for said connector.
Claim 7
Dependent Claim
69 words
A noise suppression system for electronic equipment comprising a cable for carrying electrical signals to and from said electronic equipment, said cable including an outer insulative sheath surrounded by a conductive braid, a connector for connecting said cable to said electronic equipment, said connector including a bushing for insertion between said braid and said outer sheath, and a ferrite noise suppressor located on the inner diameter of said bushing.
Claim 8
Dependent Claim
69 words
A noise suppression system for electronic equipment comprising a cable for carrying electrical signals to and from said electronic equipment, said cable including an outer insulative sheath surrounded by a conductive braid, a connector for connecting said cable to said electronic equipment, said connector including a bushing for insertion between said braid and said outer sheath, and a ferrite noise suppressor located on the inner diameter of said bushing.
Claim 9
Dependent Claim
18 words
The noise suppression system according to claim 6 wherein said ferrite noise suppressor comprises a solid ferrite ring.
Claim 10
Dependent Claim
18 words
The noise suppression system according to claim 6 wherein said ferrite noise suppressor comprises a split ferrite ring.
Claim 11
Dependent Claim
39 words
The noise suppression system according to claim 6 further comprising means for capturing said braid between the outer diameter of said bushing and the interior of said connector to complete an electromagnetic shield including said braid and said connector.
Claim 12
Dependent Claim
32 words
The noise suppression system according to claim 6 further comprising. means for providing strain relief for said connector at a point on said said cable substantially displaced from said ferrite noise suppressor.
References Cited (Backward Citations)
US3614694A
Cited
US4818957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |