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US 2023/0416052 A1Published application
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.
Claims9
A guiding device for an elevator door leaf, comprising:
- a body within which at least a first cavity is formed open towards the outside of said body and a second cavity is formed open outwards the outside of said body;
- 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 said arranged so as to protrude outwards from the second cavity;
- 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.
- 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.
2 more elements
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Dependencies are inferred from the claim text.