F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 25/24 (2006.01)
Patent
CA 2253442
The linear traversing apparatus (10) includes a lead screw (12) formed from a plurality of lead screw segments (14, 16, 18) which are supported at regular intervals, that is, at the intersection of adjacent lead screw segments, along a span by fixed hollow cylindrical splice points (20, 22). The lead screw segments (14, 16, 18) include external threading which engages the internal threading of a C-shaped spanning nut (28). The C-shaped spanning nut (28) has a circumferential portion removed so that the spanning nut (28) can clear the fixed hollow cylindrical splice points (20, 22) and associated support structure (24, 26) as the spanning nut (28) traverses the lead screw (12) in response to the rotation of the lead screw (12) and the inhibition of rotation of the spanning nut (28). The rotation of the spanning nut (28) is inhibited typically by mechanical communication with an instrument or other device which is engaged by a rail or a slot parallel to the longitudinal axis of rotation of the lead screw (12).
L'invention concerne un appareil traversant linéaire (10) comprenant une vis-mère (12) formée à partir d'une pluralité de segments (14, 16, 18) qui sont supportés à intervalles réguliers, c'est-à-dire à l'intersection de segments adjacents de la vis-mère, sur une étendue, par des points de jonction cylindriques, creux, fixes (20,22). Les segments (14, 16, 18) de la vis-mère comportent un filetage externe qui vient en contact avec le filetage interne d'un écrou en forme de C (28). La partie circulaire de l'écrou en forme de C (28) est retirée de sorte que l'écrou (28) puisse libérer les points de jonction cylindriques, creux, fixes (20, 22) et une structure support associée (24, 26) lorsqu'il traverse la vis-mère (12) en réaction à la rotation de celle-ci (12) et au blocage de la rotation de l'écrou (28). La rotation de l'écrou (28) est généralement empêchée par la communication mécanique avec un instrument ou autre dispositif qui vient en contact par un rail ou une fente parallèle à l'axe longitudinal de rotation de la vis-mère (12).
Macrae & Co.
Thermo Fibertek Inc.
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