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US 12,024,399 B2Granted
Guiding device for an elevator door leaf
AssigneeWittur Holding GmbH
InventorsLi Bohui, Zhu Ancheng, Peng Lingchao
Life of this patent
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Abstract
A guiding device for an elevator door leaf that includes a body within which at least a first cavity open outwards of said body. The guiding device also includes a first spherical element rotatably inserted in the first cavity and arranged so as to protrude from the first cavity outwards and anti-friction means interposed between the first spherical element and at least one wall delimiting the first cavity to limit the movement of the first spherical element within the first cavity.
Claims17
A guiding device for an elevator door leaf, comprising:
- a body within which at least a first cavity is formed open towards an outside of said body in a first side surface and a second cavity is formed open towards the outside of said body in a second side surface, wherein the body comprises:
- a first connecting surface between the first side surface and the second side surface;
- a second connecting surface between the first side surface and the second side surface, wherein the second connecting surface has a curved shape portion that extends between a first side of the first connecting surface to a second side of the first connecting surface opposite the first side;
- and
- a recess extending from the first side of the first connecting surface to the second side of the first connecting surface through the second connecting surface;
- a first spherical element rotatably inserted in the first cavity and arranged so as to protrude outwards from the first cavity;
- a second spherical element rotatably inserted in the second cavity and arranged so as to protrude outwards from the second cavity;
- and
- anti-friction means interposed between the first spherical element and at least one wall delimiting the first cavity to limit movement of the first spherical element within the first cavity,
- wherein said anti-friction means comprises a plurality of abutment spheres arranged within said first cavity and circumferentially around the first spherical element, said abutment spheres having smaller dimensions than the first spherical element.
7 more elements
A guiding device for an elevator door leaf, comprising:
- a body within which at least a first cavity is formed open towards an outside of said body in a first side surface and a second cavity is formed open towards the outside of said body in a second side surface, the body comprising:
- a first connecting surface between the first side surface and the second side surface, the first connecting surface being flat;
- and
- a second connecting surface between the first side surface and the second side surface, the second connecting surface including a first flat face coupled to a first side of the first connecting surface, a second flat face coupled to a second side of the first connecting surface opposite the first flat face, and a curved face between the first flat face and the second flat face;
- a first spherical element rotatably inserted in the first cavity and arranged so as to protrude outwards from the first cavity;
- a second spherical element rotatably inserted in the second cavity and arranged so as to protrude outwards from the second cavity;
- and
- anti-friction means interposed between the first spherical element and at least one wall delimiting the first cavity to limit movement of the first spherical element within the first cavity,
- wherein said anti-friction means comprises a plurality of abutment spheres arranged within said first cavity and circumferentially around the first spherical element, said abutment spheres having smaller dimensions than the first spherical element.
6 more elements
A guiding device for an elevator door leaf, comprising:
- a body within which at least a first cavity is formed open towards an outside of said body in a first side surface and a second cavity is formed open towards the outside of said body in a second side surface, the body comprising:
- a first connecting surface between the first side surface and the second side surface;
- a second connecting surface between the first side surface, the second side surface, a first side of the first connecting surface, and a second side of the first connecting surface opposite the first side;
- and
- a recess extending from the first side of the first connecting surface to the second side of the first connecting surface through of the second connecting surface;
- a first spherical element rotatably inserted in the first cavity and arranged so as to protrude outwards from the first cavity;
- a second spherical element rotatably inserted in the second cavity and arranged so as to protrude outwards from the second cavity;
- and
- anti-friction means interposed between the first spherical element and at least one wall delimiting the first cavity to limit movement of the first spherical element within the first cavity,
- wherein said anti-friction means comprises a plurality of abutment spheres arranged within said first cavity and circumferentially around the first spherical element, said abutment spheres having smaller dimensions than the first spherical element.
7 more elements
Dependencies are inferred from the claim text.