US4444449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector
Assignee: 3M Co
•
Filing: 1982-02-08
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Granted: 1984-04-24
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Expires: 2002-02-08
Abstract
Abstract An electrical connector for non-prestripped wires has a lower housing part (1) with wire guides, each comprising a double channel consisting of an upper introduction channel (47) having a cross-section suited for the introduction of a wire (7) and therebelow a parallel clamping channel (49) connected to the introduction channel by a constricted transition slit (51). A projection provided at an upper housing forces the wire at least partly into and through the transition slit (51) and into a recess (37) in the lower housing part (1) upon telescoping of the upper housing part into the lower housing part, thereby clamping the wire to strain relieve it.
Inventors
- 👤 James E. Aysta
- 👤 Geoffrey Gibson
- 👤 Rainer A. Tuukkanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:13
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2416; H01R4/242; H01R4/2425; H01R4/2429
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
An electrical connector for non-prestripped wires, comprising: a lower housing portion having wire guides for insertion to preassembled positions of wires to be connected, each guide comprising a double channel with a wire introduction channel aligned with a wire connecting area within the lower housing and a parallel clamping channel of smaller cross-section connected to the introduction channel by a constricted transition slit, and a strain relief recess between said double channel and said wire connecting area, an upper housing portion adapted to be pressed into the lower housing portion, said upper housing portion having a slotted contact element which cuts through the wire insulation and electrically connects the wires upon pressing the housing parts together, and a projection for deforming the wire and clamping it in said lower housing recess while forcing a portion of the wire into and through said transition slit upon pressing the housing parts together.
Claim 2
Dependent Claim
150 words
An electrical connector for non-prestripped wires, comprising: a lower housing portion having wire guides for insertion to preassembled positions of wires to be connected, each guide comprising a double channel with a wire introduction channel aligned with a wire connecting area within the lower housing and a parallel clamping channel of smaller cross-section connected to the introduction channel by a constricted transition slit, and a strain relief recess between said double channel and said wire connecting area, an upper housing portion adapted to be pressed into the lower housing portion, said upper housing portion having a slotted contact element which cuts through the wire insulation and electrically connects the wires upon pressing the housing parts together, and a projection for deforming the wire and clamping it in said lower housing recess while forcing a portion of the wire into and through said transition slit upon pressing the housing parts together.
Claim 3
Dependent Claim
26 words
A connector in accordance with claim 1, wherein the diameter of the clamping channel is about 0.4 to 0.7 times the diameter of the introduction channel.
Claim 4
Dependent Claim
24 words
A connector in accordance with claim 1, wherein the cross-section of the clamping channel is approximately equal to the cross-section of the conductor core.
Claim 5
Dependent Claim
29 words
A connector in accordance with claim 1, 2 or 3, wherein the width of the transition slit is about 0.2 to 0.4 times the diameter of the introduction channel.
Claim 6
Dependent Claim
25 words
A connector in accordance with claim 4, wherein the length of the double channel is at least about twice the diameter of the introduction channel.
Claim 7
Dependent Claim
21 words
A connector in accordance with claim 4, wherein the clamping channel opens into the deepest area of the strain relief recess.
References Cited (Backward Citations)
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US4002792A
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |