E - Fixed Constructions – 01 – B
Patent
E - Fixed Constructions
01
B
E01B 33/00 (2006.01) E01B 7/02 (2006.01)
Patent
CA 2108540
The invention provides a device for facilitating the repositioning of a rail having a rail base and which is moveable between first and second positions. The device includes rollers pressed against an underside of the rail base by the action of spring means when the rail is located between the first and second positions. The rollers are articulated to pivot, whereby, when the rail base is in one of those first and second positions, the rollers are pressed by the force of the spring so as to move in a direction above the underside of the rail base by a distance which is at least one-third the height of the rail base, and thus engage an edge of the rail base. The rollers can comprise separate rollers, each of which is forced against a respective opposite edge of the rail base by the spring means when the base is in the first and second positions, and the rollers preferably are articulated to pivot about a common pivot axis.
Cette invention concerne un dispositif destiné à faciliter le déplacement d'un rail monté comportant une semelle et mobile entre une première et une seconde positions. Il comprend des rouleaux plaqués contre la face inférieure de la semelle par des ressorts lorsque le rail se trouve entre lesdites première et seconde positions. Les rouleaux sont articulés sur un pivot de manière que, lorsque ladite semelle se trouve à l'une des première et seconde positions, ils dépassent sous l'impulsion du ressort la face inférieure de la semelle d'au moins le tiers de la hauteur de celle-ci et prennent ainsi appui contre son bord. Il peut y avoir des rouleaux de part et d'autre du pivot susmentionné, auquel cas ils seront respectivement poussés en appui contre les bords opposés de la semelle se trouvant à l'une des première et seconde positions susmentionnées. De préférence, ces rouleaux sont articulés sur un pivot commun.
Durchschlag Gerald
Klein Herbert
Marks & Clerk
Vae Aktiengesellschaft
LandOfFree
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