US3989339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector and method of making same
Assignee: ABB Installation Products Inc
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Filing: 1975-10-02
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Granted: 1976-11-02
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Expires: 1995-10-02
Abstract
Abstract A plurality of conductor grasping and piercing ridges are selectively disposed at an oblique angle to the longitudinal axis of a metallic crimpable ferrule and extend outwardly from its interior wire receiving surface so that upon crimping the ferrule about a wire inserted therewithin, the ridges penetrate the periphery of the wire along an obliquely oriented path defining a number of incrementally displaced transverse planes longitudinally offset from one another to avoid shearing or severing the wire along any one common transverse plane.
Inventors
- 👤 Louis F. Haitmanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:27
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2495; H01R4/10; H01R4/18; H01R4/188; H01R4/26
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
154 words
An electrical connector comprising: a crimpable metallic ferrule member having a wire receiving interior surface, a plurality of elongate ridges each extending outwardly from said interior surface and circumscribing substantially the entire inner periphery of said interior surface, each of said ridges lying along a longitudinal axis which extends parallel to a respective portion of said interior surface and which is oriented at a given oblique angle with respect to the longitudinal axis of said ferrule member for piercing engagement with a wire inserted therewithin, whereby upon crimping said ferrule member about such wire, each of said ridges is caused to penetrate the periphery of such wire and engage the interior thereof along an obliquely oriented path with respect to the longitudinal axis of such wire, so that such wire is penetrated about its periphery along incrementally displaced transverse planes longitudinally offset from one another to avoid shearing such wire along a common plane.
Claim 2
Dependent Claim
154 words
An electrical connector comprising: a crimpable metallic ferrule member having a wire receiving interior surface, a plurality of elongate ridges each extending outwardly from said interior surface and circumscribing substantially the entire inner periphery of said interior surface, each of said ridges lying along a longitudinal axis which extends parallel to a respective portion of said interior surface and which is oriented at a given oblique angle with respect to the longitudinal axis of said ferrule member for piercing engagement with a wire inserted therewithin, whereby upon crimping said ferrule member about such wire, each of said ridges is caused to penetrate the periphery of such wire and engage the interior thereof along an obliquely oriented path with respect to the longitudinal axis of such wire, so that such wire is penetrated about its periphery along incrementally displaced transverse planes longitudinally offset from one another to avoid shearing such wire along a common plane.
Claim 3
Dependent Claim
36 words
An electrical connector as defined in claim 1 wherein said longitudinal axes of said ridges are oriented at an included angle of between 5° to 85° with respect to the longitudinal axis of said ferrule member.
Claim 4
Dependent Claim
22 words
An electrical connector as defined in claim 1 wherein said ridges are aligned in substantially parallel relationship with respect to one another.
Claim 5
Dependent Claim
54 words
An electrical connector as defined in claim 3 wherein each of said ridges is selectively divided into spaced segments each having a given length, said ridge segments being disposed in longitudinally extending rows each separated from an adjacent row by a non-ridged area arranged to provide a folding line thereat for the ferrule member.
Claim 6
Dependent Claim
15 words
An electrical connector as defined in claim 4 wherein said ferrule member is substantially U-shaped.
Claim 7
Dependent Claim
36 words
An electrical connector as defined in claim 5 wherein said folding lines are arranged to define the corners of a rectangular configuration in cross section as said ferrule member is crimped about a wire inserted therewithin.
Claim 8
Dependent Claim
36 words
An electrical connector as defined in claim 6 wherein said longitudinal axes of said ridges are oriented at an included angle of between 5° to 85° with respect to the longitudinal axis of said ferrule member.
Claim 9
Dependent Claim
33 words
An electrical connector as defined in claim 1 wherein said ridges each terminate in a sharp crest to facilitate piercing through the outer periphery of a wire crimpably engaged within said ferrule member.
Claim 10
Dependent Claim
27 words
An electrical connector as defined in claim 8 wherein said ridges are arranged in a predetermined pattern over substantially the entire area encompassed by said interior surface.
Claim 11
Dependent Claim
21 words
An electrical connector as defined in claim 9 wherein said ridges are arranged in uniformly spaced disposition over said interior surface.
Claim 12
Independent Claim
121 words
A method of making an electrical connection comprising the steps of: providing a crimpable metallic ferrule member having a wire receiving interior surface on which are disposed a plurality of parallel elongate ridges each extending outwardly from said interior surface and lying along a respective longitudinal axis which extends parallel to a respective portion of said interior surface and which is oriented at an oblique angle to the longitudinal axis of said ferrule member; inserting a given length of a conductor within said ferrule member; and selectively folding said ferrule member inwardly against said conductor to cause said ridges to penetrate the outer periphery of said conductor along a path defined by incrementally displaced transverse planes longitudinally offset from one another.
Claim 13
Independent Claim
121 words
A method of making an electrical connection comprising the steps of: providing a crimpable metallic ferrule member having a wire receiving interior surface on which are disposed a plurality of parallel elongate ridges each extending outwardly from said interior surface and lying along a respective longitudinal axis which extends parallel to a respective portion of said interior surface and which is oriented at an oblique angle to the longitudinal axis of said ferrule member; inserting a given length of a conductor within said ferrule member; and selectively folding said ferrule member inwardly against said conductor to cause said ridges to penetrate the outer periphery of said conductor along a path defined by incrementally displaced transverse planes longitudinally offset from one another.
Claim 14
Dependent Claim
22 words
A method as defined in claim 11 wherein said ferrule member is folded to define a substantially rectangular configuration, in cross section.
Claim 15
Dependent Claim
19 words
A method as defined in claim 11 wherein said ferrule member is compressed uniformly inwardly over its entire length.
References Cited (Backward Citations)
US3814836A
Cited
US3736627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |