Closing devices incorporating rolling means
AssigneesSimu, Aluroy
InventorsPierre Decrane, Bernard Roy
Life of this patent
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Abstract
Closures such as rolling shades or blinds which include a drum for winding slats of the closure body and which are formed by two superposed shafts. Separation devices are provided adapted to prevent any friction between layers of slats wound on the shafts. These devices may include stepped pulleys associated with slat end pieces of different lengths.
Claims7
In a roll up closure having a body consisting of a plurality of articulated slats which extend generally perpendicular to an elongated vertical axis of the body and wherein the slats are adapted to be wound on a drum formed of first and second parallel shafts each having opposite ends and each being oriented transversely to the elongated vertical axis of the body and in spaced vertical relationship to one another, and wherein an upper edge of the body is secured to the first shaft which is rotated at a first rate of rotation by a drive mechanism and wherein the second shaft is kinematically connected to the first shaft in such a manner so as to rotate at a different rate than the first rate, the improvement comprising,
- stepped pulley means idly mounted to each of the opposite ends of the first and second shafts and forming a plurality of generally circular cheeks of differing diameters,
- the slats of the body being formed as a plurality of separate series of slats with each series of slats having ends of different lengths from series to series such that each of said plurality of cheeks form a bearing surface for supporting the ends of a separate one of said series of slats as the body is wound and unwound relative to the first and second shafts.
In a roll up closure having a body consisting of a plurality of articulated slats which extend generally perpendicular to an elongated vertical axis of the body and wherein the slats are adapted to be wound on a drum formed of first and second parallel shafts each having opposite ends and being oriented transversely to the elongated vertical axis of the body and in spaced vertical relationship to one another, and wherein an upper edge of the closure body is secured to the first shaft which is rotated at a speed by a drive mechanism and wherein the second shaft is kinematically connected to the first shaft in such a manner so as to rotate at a different speed than the first shaft, the improvement comprising,
- generally circular bearing means idly mounted to each of the opposite ends of the first and second shafts and having generally equal diameters,
- the slats of the body being formed of a plurality of separate series of slats with each series of slats having ends of different lengths from series to series of the slats,
- rollers mounted to the opposite ends of each said slats, and said rollers of each separate series of slats having substantially the same diameter and with the rollers of each separate series of slats being different than the diameter of rollers of other of the separate series of slats.
Dependencies are inferred from the claim text.