Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Patent
1991-03-01
1992-07-21
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
29869, 29872, 439447, H01R 422, H01R 4300
Patent
active
051324946
ABSTRACT:
A twist-on or wire-nut electrical connector having a rigid, electrically insulative upper body, a flexible, elastic, electrically insulative lower skirt, and a coil spring within the body for gripping wires which may be inserted therein. The provision of a flexible, elastic skirt allows the insertion of a larger number of wires (or larger sized wires) into the connector; the skirt further deforms to fit more easily within a crowded junction box or other high-density wiring environment. Unlike prior art twist-on connectors, the lower skirt is attached directly to the open end of the polymeric body, allowing greater application of torque to the rigid body. In the preferred embodiment, the upper body is formed of polypropylene, the lower skirt is formed of a styrenebutylene compound or an olefinic thermoplastic vulcanizate, and the connector is constructed by multicomponent injection molding.
REFERENCES:
patent: 2618684 (1952-11-01), Bergan
patent: 2656204 (1953-10-01), Blomstrand
patent: 2756402 (1956-07-01), Haworth et al.
patent: 2823249 (1958-02-01), Curtiss
patent: 2823250 (1958-02-01), O'Keefe
patent: 2890266 (1959-06-01), Bollmeier
patent: 2925461 (1960-02-01), Anderson
patent: 3075038 (1963-01-01), Schinske
patent: 3097257 (1963-07-01), Cheney
patent: 3107273 (1963-10-01), Schinske et al.
patent: 3297816 (1967-01-01), Waddington
patent: 3308229 (1967-03-01), Burniston
patent: 3448223 (1969-06-01), Thorsman
patent: 3592957 (1971-07-01), James
patent: 3665374 (1972-05-01), Denton
patent: 3676574 (1972-07-01), Johansson et al.
patent: 4104482 (1978-08-01), Scott
patent: 4150251 (1979-04-01), Scott
patent: 4220811 (1980-09-01), Scott
patent: 4751350 (1988-06-01), Eaton
patent: 4883921 (1989-11-01), Legerius et al.
Burton Mark A.
Clifton Richard B.
Paul Gregg D.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Musgrove Jack V.
Nimmo Morris H.
LandOfFree
Dual durometer twist-on connector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual durometer twist-on connector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual durometer twist-on connector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-845055