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US 9,801,777 B2Granted
Walking aid device
OwnerChia-Pao Chang, Ying-Hsiang Lin +1inventors
InventorsChia-Pao Chang, Ying-Hsiang Lin, Yu-Cheng Chang
Life of this patent
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Abstract
A walking aid device includes a support body inclusive of a plurality of support elements extending toward the ground. Each support element is coupled to a caster and a brake unit. Each brake unit has a clutching surface. The clutching surface controllably clutches a wheel of the caster or the ground to thereby generate friction for stopping the walking aid device.
Claims2
A walking aid device, comprising:
- a support body comprising a plurality of support elements extending toward a ground and each having a first hollow-core portion;
- casters corresponding in quantity to the support elements, each said caster comprising a forked element and a wheel pivotally disposed at the fbrked element, with the forked element extending to form a first guide column, wherein the first guide column of each caster is disposed at the first hollow-core portion of a corresponding one of the support elements, and each said first guide column has therein a second hollow-core portion;
- and
- brake units corresponding in quantity to the support elements, each said brake unit comprising a second guide column disposed at the second hollow-core portion of a corresponding one of the first guide columns such that the second guide column is coupled to a corresponding one of the support elements, wherein a spring is disposed between each said first guide column and a corresponding one of the second guide columns, and each said second guide column is protruded from the second hollow-core portion to form two hoods each having a first clutching surface for controllably clutching the wheel of the caster.
1 more element
Dependencies are inferred from the claim text.