Patent US2634825A successfully refreshed from Google Patents.
Patent US4444449A successfully refreshed from Google Patents.
US4444449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical connector
Assignee: 3M Co
•
Filing: 1982-02-08
•
Granted: 1984-04-24
•
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 22:46
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)
US3835445A
Cited
NL7409034A
Cited
US4002792A
Cited
DE2515688A1
Cited
US4195898A
Cited
US4163598A
Cited
US4270832A
Cited
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 |