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US 12,202,532 B2Granted
Compact collapsible carts
Assigneedbest products, Inc.
InventorRichard Elden
Life of this patent
Estimating the term…
Abstract
Collapsible carts are disclosed. The collapsible carts include a frame, a load bearing member and a wheel assembly. The wheel assembly includes a housing with a horizontal pin channel and an elongated diagonal channel. The horizontal pin channel may be adapted to guide a pin to transpose horizontally along the horizontal pin channel while rotatably coupling a leg member of the frame to a horizontal section of the load bearing member. The elongated diagonal channel may be adapted to guide the horizontal section of the load bearing member to pivot around a pin axis and move from a horizontal plane in the open condition to a generally vertical plane in the closed condition. The movement of the horizontal section along the elongated diagonal channel actuates the housing to rotate around the generally vertical axis.
Claims20
A cart comprising:
- a frame having a horizontal section with a left side and a right side, the horizontal section extending from its left side to a lower vertical left leg member and from its right side to a lower vertical right leg member, the lower vertical left leg member and the lower vertical right leg member each extending generally vertical along a first vertical plane;
- a platform configured to transition from a folded closed condition to an expanded open condition, the platform having a bottom horizontal section with a left side and a right side, the bottom horizontal section extending on the left side to a left arcuate section that, in the open condition, extends to an elevated left horizontal section, and extending on the right side to a right arcuate section that, in the open condition, extends to an elevated right horizontal section;
- a left wheel housing configured to transition simultaneously with the platform from a folded closed condition to an expanded open condition, the left wheel housing rotatably coupled to the lower vertical left leg member of the frame and the elevated left horizontal section of the platform, the left wheel housing comprising a vertical receptacle, a front section, and a base section,
- the vertical receptacle is adapted to receive the lower vertical left leg member of the frame, and comprises a horizontal pin channel guiding a first pin to transpose horizontally along the horizontal pin channel while rotatably coupling the lower vertical left leg member of the frame to the elevated left horizontal section of the platform,
- the front section comprising an elongated channel having a diagonal channel between a first vertical channel and a second vertical channel, the elongated channel is configured to guide the elevated left horizontal section of the platform to move from a horizontal plane in the open condition that it wherein the platform is resting on a lower edge of the first vertical channel to a second vertical plane in the closed condition wherein the platform is adjacent an upper edge of the second vertical channel, wherein the movement of the elevated left horizontal section along the diagonal channel rotates the left wheel housing, and
- a left wheel rotatably coupled to the left wheel housing and elevated above the base section of the left wheel housing.
3 more elements
A collapsible cart configured to transition from a folded closed condition to an expanded open condition, the collapsible cart comprising:
- a frame comprising a left leg member and a right leg member, the left leg member aligned along a first frame axis and the right leg member aligned along a second frame axis;
- a load supporting member having a bottom horizontal section with a left side and a right side, the bottom horizontal section extending on the left side to a left arcuate section that, in the open condition, extends to an elevated left horizontal section, and extending on the right side to a right arcuate section that, in the open condition, extends to an elevated right horizontal section;
- a left and a right wheel assembly, each wheel assembly configured to transition simultaneously with the load supporting member from an expanded open condition to a folded closed condition, the left wheel assembly rotates clockwise around the first frame axis and the right wheel assembly rotates counterclockwise around the second frame axis to transition from an expanded open condition to a folded closed condition, each wheel assembly comprising a wheel rotatably coupled to a housing,
- the housing comprises a horizontal pin channel and an elongated diagonal channel,
- the horizontal pin channel is adapted to guide a pin defining a pin axis to transpose horizontally along the horizontal pin channel while rotatably coupling the left or right leg member of the frame to the elevated left or right horizontal section of the load supporting member, respectively,
- the elongated diagonal channel is adapted to guide the elevated left or right horizontal section of the load supporting member to pivot around the pin axis and move from a horizontal plane in the open condition to a generally vertical plane in the closed condition, and
- wherein the movement of the elevated left or right horizontal section along the elongated diagonal channel actuates the left or right wheel housing to rotate around the first or second frame axis, respectively.
4 more elements
A collapsible cart, configured to transition from a folded closed condition to an expanded open condition, the collapsible cart comprising:
- a frame comprising a leg member defining a generally vertical axis;
- a load bearing member comprising a horizontal section, the horizontal section rotatably coupled to the leg member via a pin defining a pin axis;
- a wheel assembly configured to transition simultaneously with the load bearing member from an expanded open condition to a folded closed condition, each wheel assembly comprising a wheel rotatably coupled to a housing,
- the housing comprises a horizontal pin channel and an elongated diagonal channel,
- the horizontal pin channel is adapted to guide the pin to transpose horizontally along the horizontal pin channel while rotatably coupling the leg member of the frame to the horizontal section of the load bearing member,
- the elongated diagonal channel is adapted to guide the horizontal section of the load bearing member to pivot around the pin axis and move from a horizontal plane in the open condition to a generally vertical plane in the closed condition, and
- wherein the movement of the horizontal section along the elongated diagonal channel actuates the housing to rotate around the generally vertical axis.
4 more elements
Dependencies are inferred from the claim text.