Foldable rollator
OwnerWendy Huanginventor
Life of this patent
Estimating the term…
Abstract
A foldable rollator includes: a main support frame including two spaced-apart front support rods; a rear support frame including two spaced-apart rear support rods pivotally coupled to the front support rods, respectively; a plurality of wheels respectively installed on the main support frame and the rear support rods for rolling on the ground; an intermediate support frame coupled to the main support frame and the rear support frame, including a front support sub-frame pivotally coupled between the front support rods and a rear support sub-frame pivotally coupled between the rear support rods, the front and rear support sub-frames being further pivotally coupled to an axle; a seat unit disposed atop the intermediate support frame; and a backrest unit pivotally coupled to the axle.
Claims11
A foldable rollator, comprising:
- a main support frame including two spaced-apart front support rods, each of said front support rods having a top end, a bottom end opposite to the top end, and a hand grip attached to the top end and extending therefrom;
- a rear support frame including two spaced-apart rear support rods, each of said rear support rods having a top end pivotally coupled to said front support rods and a bottom end opposite to the top end;
- a plurality of wheels respectively installed under said main support frame and said rear support frame for rolling on the ground;
- an intermediate support frame coupled to said main support frame and said rear support frame below the pivotal connection therebetween, including a front support sub-frame pivotally coupled between said front support rods and a rear support sub-frame pivotally coupled between said rear support rods, said front support sub-frame and said rear support sub-frame being further pivotally coupled to a transverse axle;
- a seat unit disposed atop said intermediate support frame;
- and
- a backrest unit pivotally coupled to said transverse axle;
- wherein said transverse axle is at substantially the same height as the pivotal connections of said front support sub-frame and said rear support sub-frame in an unfolded position, and wherein when said transverse axle is pulled upwards, said front support sub-frame and said rear support sub-frame pivot towards each other, thus bringing said front support rods and said rear support rods together to move to a folded position;
- and
- wherein said front support sub-frame includes a front transverse link pivotally coupled between said front support rods and a pair of spaced-apart front pivot spokes extending from said front transverse link to have free end portions, respectively;
- said rear support sub-frame includes a rear transverse link pivotally coupled between said rear support rods and a pair of spaced-apart rear pivot spokes extending from said rear transverse link to have free end portions, respectively;
- and said free end portions of each of said front pivot spokes and the corresponding one of said rear pivot spokes are pivotally coupled to said transverse axle.
Dependencies are inferred from the claim text.