US3835443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector shield
Assignee: TDK Micronas GmbH
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Filing: 1973-04-25
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Granted: 1974-09-10
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Expires: 1993-04-25
Abstract
Abstract A radio frequency and electromagnetic interference shield for an electrical connector comprising a helically coiled conductive spring which is interposed between facing surfaces on the mating halves of the connector. The spring is coiled in such a manner that the convolutions thereof are slanted at an oblique angle to the center axis of the connector members. The axial distance between said facing surfaces when the connector members are mated is less than the normal outside helical diameter of the convolutions of the spring. Thus, mating of the connector members axially flattens the spring to form an almost continuous metal shield between the connector members.
Inventors
- 👤 B Arnold
- 👤 J Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:24
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/648; H01R13/658; H01R13/6581; H01R13/6582; H01R13/6583; H01R4/00; H01R4/28; H01R4/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
In an electrical connector comprising a first connector member having a first contact therein, a second connector member having a second contact for electrical connection with said first contact upon mating of said first and second connector members, said first and second connector members having a common central axis and being formed with parallel facing surfaces thereon surrounding said contacts, and a shielding member interposed between said facing surfaces for eliminating radio frequency and electromagnetic interference, the improvement which comprises: said shielding member comprising a helically coiled conductive spring having convolutions each of which lies in a slanted plane that intersects said center axis of said connector members at an oblique angle; coupling means other than said spring mounted on one of said connector members and engageable with the other connector member for coupling said connector members in mated engagement; and the axial distance between said facing surfaces when said connector members are mated by said coupling means is less than the normal outside helical diameter of the convolutions of said spring, whereby said spring is axially flattened when said connector members are mated, thus providing RFI and EMI shielding.
Claim 2
Dependent Claim
190 words
In an electrical connector comprising a first connector member having a first contact therein, a second connector member having a second contact for electrical connection with said first contact upon mating of said first and second connector members, said first and second connector members having a common central axis and being formed with parallel facing surfaces thereon surrounding said contacts, and a shielding member interposed between said facing surfaces for eliminating radio frequency and electromagnetic interference, the improvement which comprises: said shielding member comprising a helically coiled conductive spring having convolutions each of which lies in a slanted plane that intersects said center axis of said connector members at an oblique angle; coupling means other than said spring mounted on one of said connector members and engageable with the other connector member for coupling said connector members in mated engagement; and the axial distance between said facing surfaces when said connector members are mated by said coupling means is less than the normal outside helical diameter of the convolutions of said spring, whereby said spring is axially flattened when said connector members are mated, thus providing RFI and EMI shielding.
Claim 3
Dependent Claim
66 words
An electrical connector as set forth in claim 1 wherein: said connector members are coaxial cylindrical bodies, said first connector member having an outwardly extending annular shoulder thereon forming one of said facing surfaces and the second connector member having an annular end surface forming the other facing surface; and said spring being formed as an annulus interposed between said annular shoulder and annulAr end surface.
Claim 4
Dependent Claim
30 words
An electrical connector as set forth in claim 1 wherein: said coupling means surrounds said spring; and one of said connector members is telescopically mounted within the other connector member.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |