Electrical connectors – With magnet – To urge connector to supporting surface
Reexamination Certificate
1998-03-25
2001-05-15
Nguyen, Khiem (Department: 2839)
Electrical connectors
With magnet
To urge connector to supporting surface
Reexamination Certificate
active
06231350
ABSTRACT:
OBJECT OF THE INVENTION
The object referred to by the invention which is protected by this patent consists of a “Perfected protection and cutting unit by flap cover, for connection and testing modules of telephone lines”.
It consequently deals with a component element of said modules, in which the following functions are attributed.
a) The optional and temporary interruption of the network/subscriber electric continuity for conduction of the tests, without operating with the permanent connections of the module.
b) Accessibility to the appropriate contacts, in order to facilitate checking of the technical characteristics of the connection.
c) Protection against fortuitous irregularities of the constants of the current, especially overvoltages.
BACKGROUND OF THE INVENTION
The holder company of the present patent, is also holder of Spanish Utility Model 9400528, granted and in force, the object of which is a “Perfected connection and testing module of telephone lines”, in which a protection and cutting unit is integrated, the object of this Title offering advantagous differences over the same.
In effect, in the former, the cutting function was performed by means of the manual extraction of the protection unit, with which the continuity bridges in their interior were removed, interrupting the connection between the service (subscriber) and the couple (line) terminals, making one and the other accessible for performance of the testing.
During the development of these tests, the removed unit had to be held in the hand of the operator or provisionally put away, always introducing an obstruction in the task of the same, and additionally, since the work on a module is normally conducted in an inaccessible location without ladders, the dropping of the loose unit implied its loss or breakage, due to its reduced dimensions.
DESCRIPTION OF THE INVENTION
The purpose of the invention which constitutes the object of this patent is to solve the disadvantages which are proper to the known, previously described, protection and cutting unit, having been conceived and designed in compliance with this objective.
For this, continuity bridges have been incorporated to a rectangular flap cover, in such a manner that the rotational raising of the same by one of its sides, hinged, conducts the cutting function when removed from the terminals without separating the protection unit module.
The structure of the same comprises two independent rectangular prismatic parts, fitted to each other by superpositioning: the one on top, which is head of the unit, involves a flap cover, articulated on one of its sides, which carries on its top face, a handle for activation and on its bottom face, the continuity bridges, which establish them between the service and the couple terminals, two by two, in such a manner, that when the cover is rotated during the opening movement, it carries with it said continuity bridges, which simultaneously emerge from end grooves for insertion of said service and couple terminals, remaining joined to the cover, and the latter, to the head of the unit by means of its hinge.
Said terminals emerge through the bottom of the head, remaining accessible for performance of the tests and inaccessible when the cover is closed, leaving the continuity bridges inserted in their end grooves and assuring the connection and the closure by means of a pin which fits into the side of the head opposite the hinge, in sealed manner by means of an O-ring.
The bottom part, which is the body of the unit, presents a peripherical recess on its top edge, for the precision fit of the lower flange of the unit head, showing on the bottom of its hollow interior, four notches placed in respective proximity to the corners, for the passage of the lower ends of the service and the couple terminals, plus a central notch for passage of the grounding terminal, said interior capable of being filled with an insulating product to assure the sealing of the union between the head and the body of the unit and to increase the dielectric stiffness between terminals.
The service terminals present sideways, on their central zone, various pins with respective transversal protection contacts of confronted convex surfaces, which permit the parallel coupling to the same, of an ionizable noble gas discharger which, clamped by the grounding terminal, grounds the connection in case overvoltages are produced in the network in excess of a preset limit value.
The lower ends of all the service terminals, couples and grounding, penetrate through the bottom of the body so that, emerging through the lower face, they establish contact with the respective connection strips of the module, fitting into the same.
The existance in the body of the unit of five contacts which are accessible prior to their sealed closure, constituted by the two service, the two couples and the grounding terminals, permit the attribution to the unit of diverse specific protection or checking functions, by means of the series or parallel coupling of suitable known means as for example, frequency filters, variable resistances (PTC) etc., independently from the already described gas discharger.
REFERENCES:
patent: 4451113 (1984-05-01), Zuniga
patent: 5414765 (1995-05-01), Lanquist et al.
patent: 5476386 (1995-12-01), Booth
patent: 5687213 (1997-11-01), Larkin
patent: 5872831 (1999-02-01), Zoiss et al.
patent: 1027218 (1994-02-01), None
Duverne J. F.
Ladas & Parry
Mondragon Telecommunications, S.L.
Nguyen Khiem
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