Drive and positioning method and system for automated switch...

Telephonic communications – Centralized switching system – Structure of equipment

Reexamination Certificate

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Details

C379S306000

Reexamination Certificate

active

07991145

ABSTRACT:
A method and system for automating a switch matrix board for cross-connecting any line in a set of input lines to any line in a set of output lines, to be used e.g. in automating cross-connects for line pairs in a central office main distribution frame (MDF) of a telecommunication network. The switch matrix (100) comprises a plurality of contact sledges (130) driven by a plurality of sledge positioning screws (120) that slidably engage a plurality of main contact pads (110) to cross-connect the lines. In an embodiment of the invention, two electric motors cooperate to position a lateral drive gear (158) to engage and rotate a selected sledge positioning screw (120), which moves the contact sledge. In another embodiment, a single electric motor operates together with a magnetic clutch assembly (180) to position the lateral drive gear to rotate the sledge positioning screw (120). A controller unit is connected to a position detection system and to the motors to accurately position the contact sledge (130) on the switch matrix board.

REFERENCES:
patent: 4571721 (1986-02-01), Yasui et al.
patent: 4817134 (1989-03-01), Pickens et al.
patent: 5790651 (1998-08-01), Suzuki et al.
patent: 5994862 (1999-11-01), Ejiri et al.
patent: 6138345 (2000-10-01), Suzuki et al.
patent: 0239473 (2002-05-01), None

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