Improved extrusion track for blinds

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 9/36 (2006.01)

Patent

CA 2198413

The improved system utilizes a track (51 ) which has a bowed internal surface to prevent the wheel of the carrier (17) from frictional engagement with the side of the track (51). The curved surface (55) which faces the wheels (27) will not be engaged by the wheels (27) even where the carrier (17) turns to one side or the other. This is accomplished while leaving the innermost portions of the raceway (53) in the same width position with regard to the wheels (27) as is usual to prevent the carrier (17) from coming off-track. The tolerances for the inner corners of the raceway (53) opposing the wheels (27) may be reduced to further prevent the possibility of jamming in the track (51).

Système amélioré utilisant un rail (51) doté d'une surface interne arquée pour empêcher une résistance de frottement du galet du transporteur (17) avec le côté du rail (51). La surface arquée (55) située à l'opposé des galets (27) ne sera pas engagée par ces derniers (27) même à l'emplacement où le transporteur (17) tourne d'un côté ou de l'autre. Ceci est accompli tout en laissant les parties les plus intérieures du chemin de roulement (53) de la même largeur que d'habitude par rapport aux galets (27) de façon à empêcher le transporteur (17) de dérailler. Les tolérances pour les coins intérieurs du chemin de roulement (53) situés à l'opposé des galets (27) peuvent être diminuées pour empêcher toute possibilité de coincement sur le rail (51).

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