Electrical connectors – Metallic connector or contact having movable or resilient... – Spring actuated or resilient securing part
Reexamination Certificate
2000-04-19
2001-09-04
Abrams, Neil (Department: 2839)
Electrical connectors
Metallic connector or contact having movable or resilient...
Spring actuated or resilient securing part
C439S787000
Reexamination Certificate
active
06283801
ABSTRACT:
BACKGROUND OF THE INVENTION
Field of the Invention
This invention relates to a spring controlled connection terminal for an electrical device composed of a conducting support part that is fixed to a main conducting part, and at least one clamping spring folded in the form of a loop and provided with a clamping window through which a flange of the support part passes.
Prior art includes an elastic terminal consisting of a spring folded in the form of a loop or a cage, in which one attachment flange is fixed to the conducting part of the support, and another flange is used to tighten the electrical wire and for the connection. The clamping flange is provided with an opening or a window in which the electrical wire is housed and which remains trapped between an edge of the said window and a flange of the conducting part of the support, due to the spring effect. The electrical wire is engaged in the chase or clamping window, by pressing on the looped spring using a screwdriver at the same time. For example, refer to patent EP 0 806 811 and patent DE 196 29 563 describing an elastic terminal in which a stop is housed inside the loop in order to prevent the spring from being compressed. In particular, permanent deformation of the spring must be avoided, since this would have unfortunate consequences on the contact between the electrical wire and the conducting support part.
The only function of stops used in looped springs at the present time is to prevent the spring from being compressed and permanently deformed.
SUMMARY OF THE INVENTION
The purpose of the invention is to provide a spring terminal fitted with a stop consisting of a looped spring, that also positions the electrical wire in addition to the traditional stop function. This stop is prevented from moving sideways with respect to the spring and it is housed in the two adjacent spring terminals.
The terminal according to the invention includes a spring stop that is bent to fit inside the spring loop, and to form wire guide means outside the loop adjacent to the flange of the support part.
According to another characteristic, the terminal is formed of two parts connected to each other inside the spring loop.
According to another characteristic, the spring stop forms two stop pins connected to two hubs assembled to each other and fixed to two half-shells forming a wire guide dish, these two half-shells being connected to each other by a bending membrane.
REFERENCES:
patent: 4767340 (1988-08-01), Hohorst
patent: 5816867 (1998-10-01), Davidsz et al.
patent: 5853304 (1998-12-01), Landreau et al.
patent: 5860837 (1999-01-01), Bock et al.
patent: 5879204 (1999-03-01), Delarue et al.
patent: 6004168 (1999-12-01), Fuchs et al.
patent: 6010376 (2000-01-01), Kollmann
patent: 44 13 151 (1995-10-01), None
patent: 296 08 178 U (1996-09-01), None
patent: 19629563A1 (1998-01-01), None
Gourdon Jacques
Guinda Santos
Tocqueville Claude
Abrams Neil
Nguyen Son V.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Schneider Electric Industries SA
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