Patent US4288141A successfully refreshed from Google Patents.
US4288141A
Expired / Lapsed
US
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Insulation displacement contact for an electrical connector
Assignee: Ferranti International PLC
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Filing: 1979-12-04
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Granted: 1981-09-08
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Expires: 1999-12-04
Abstract
Abstract A contact for an electric connector comprises a terminal element for connection to an electric conductor and a contact-making portion for connection to an electric circuit. The terminal element comprises two arms 10 and 11 joined by a link portion 12 and together defining a parallel sided notch 13. A double bend 23 is formed in the link portion and a second double bend 24 in one arm to produce a notch of the desired width. The contacting-making element may comprise two leak springs 16 and 17 forming a socket contract. A locating member 18 is also provided to locate the contact in a housing.
Inventors
- 👤 Russell A. Leather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:47
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/50; H01R12/59; H01R12/65; H01R12/67; H01R12/675; H01R12/70; H01R12/77; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/49218
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
107 words
An insulation-displacement contact for an electric connector which includes a terminal element for connection to an electric conductor and a contact-making element for connection to an electric circuit, the terminal element comprising two spaced arms joined together at one end by a link portion and together defining a parallel-sided notch, a first one of the arms being displaced relative to the other arm by a double bend formed in the link portion and being further displaced by a double bend formed in the said one arm to define, with the other arm, a notch of the required width to receive and displace insulation of an electric conductor.
Claim 2
Dependent Claim
107 words
An insulation-displacement contact for an electric connector which includes a terminal element for connection to an electric conductor and a contact-making element for connection to an electric circuit, the terminal element comprising two spaced arms joined together at one end by a link portion and together defining a parallel-sided notch, a first one of the arms being displaced relative to the other arm by a double bend formed in the link portion and being further displaced by a double bend formed in the said one arm to define, with the other arm, a notch of the required width to receive and displace insulation of an electric conductor.
Claim 3
Dependent Claim
51 words
A contact as claimed in claim 1 in which each arm is of rectangular cross-section, the first double bend displacing the first arm from the plane of the second arm into a plane parallel thereto, and the second double bend returning the first arm into the plane of the second arm.
Claim 4
Dependent Claim
26 words
A contact as claimed in claim 1 in which each arm has chamfers formed on its free end arranged to guide a conductor into the notch.
Claim 5
Dependent Claim
37 words
A contact as claimed in claim 1 in which said one arm is formed longer than the other arm such that after the formation of the two double bends each arm is of the same effective length.
Claim 6
Dependent Claim
18 words
A contact as claimed in claim 1 which includes locating means for locating the contact in a housing.
Claim 7
Dependent Claim
17 words
A contact as claimed in claim 5 including securing means for securing the contact in a housing.
Claim 8
Dependent Claim
17 words
A contact as claimed in claim 1 in which the contact-making element comprises two opposing resilient leaf-springs.
Claim 9
Dependent Claim
16 words
A contact as claimed in claim 1 in which the contact-making element comprises a terminal post.
Claim 10
Dependent Claim
28 words
A contact as claimed in claim 1 in combination with electric connector comprising a housing of electrically-insulating material and a plurality of said contacts mounted on said housing.
Claim 11
Independent Claim
112 words
A method of manufacture of an insulation displacement contact for an electric connector having a terminal element for connection to an electricconductor and a contact-making element for connection to an electric circuit, which includes the steps of forming a contact member having two-spaced arms joined at one end by a link portion and together defining a notch of greater than the required width, forming a double bend in the link portion to displace one arm relative to the other, and forming a further double bend in the said one arm such that the two arms together define a notch of the required width to receive and displace insulation of an electric conductor.
Claim 12
Independent Claim
112 words
A method of manufacture of an insulation displacement contact for an electric connector having a terminal element for connection to an electricconductor and a contact-making element for connection to an electric circuit, which includes the steps of forming a contact member having two-spaced arms joined at one end by a link portion and together defining a notch of greater than the required width, forming a double bend in the link portion to displace one arm relative to the other, and forming a further double bend in the said one arm such that the two arms together define a notch of the required width to receive and displace insulation of an electric conductor.
Claim 13
Dependent Claim
26 words
A method as claimed in claim 10 in which the step of forming a contact member comprises stamping a contact member from a sheet of material.
Claim 14
Dependent Claim
22 words
A method as claimed in claim 11 in which the stamping operation forms chamfers on the free ends of the two arms.
Claim 15
Dependent Claim
29 words
A method as claimed in claim 11 in which the stamping operation forms at least one limb from which the contact making element of the contact may be formed.
Claim 16
Dependent Claim
22 words
A method as claimed in claim 10 in which a plurality of contacts are formed attached to a common strip of material.
Claim 17
Dependent Claim
21 words
A method as claimed in claim 14 which includes the step of severing each contact from the common strip of material.
Claim 18
Dependent Claim
27 words
A method as claimed in claim 10 including the steps of forming a housing of electrically-insulating material and locating on said housing a plurality of said contacts.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |