A locking floor folding cart has a pair of front wheels, a pair of rear wheels, and a folding frame. The folding frame includes a front frame supported by the pair of front wheels, and a rear frame supported by the pair of rear wheels. A front floor member is hinged to a rear floor member at a middl
A locking floor folding cart has a pair of front wheels, a pair of rear wheels, and a folding frame. The folding frame includes a front frame supported by the pair of front wheels, and a rear frame supported by the pair of rear wheels. A front floor member is hinged to a rear floor member at a middle floor joint. The front floor member is also hinged to the front frame, and the rear floor member is also hinged to the rear frame. A floor crossbar supports the middle floor joint, the front floor member, and the rear floor member. A primary sidewall assembly supports the floor crossbar. The primary sidewall assembly includes a front floor crossbar support and a rear floor crossbar support. The front floor crossbar support is hinged to the rear floor crossbar support at a floor crossbar connector.
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1. A locking floor folding cart comprising: a. a pair of front wheels;b. a pair of rear wheels;c. a folding frame including: i. a front frame supported by the pair of front wheels, and a rear frame supported by the pair of rear wheels;ii. a front floor member hinged to a rear floor member at a middl
1. A locking floor folding cart comprising: a. a pair of front wheels;b. a pair of rear wheels;c. a folding frame including: i. a front frame supported by the pair of front wheels, and a rear frame supported by the pair of rear wheels;ii. a front floor member hinged to a rear floor member at a middle floor joint, wherein the front floor member is also hinged to the front frame, and wherein the rear floor member is also hinged to the rear frame;iii. a floor crossbar supporting the middle floor joint, the front floor member, and the rear floor member;iv. a primary sidewall assembly supporting the floor crossbar, wherein the primary sidewall assembly includes a front floor crossbar support and a rear floor crossbar support, wherein the front floor crossbar support is hinged to the rear floor crossbar support at a floor crossbar connector, wherein the floor crossbar connector is connected to the floor crossbar; wherein the primary sidewall assembly further includes a pair of primary sidewall assembly front links and a pair of primary sidewall assembly rear links, wherein the pair of primary sidewall assembly front links are pivotally connected to the front frame at front frame upper joints and connected to the front floor crossbar supports at primary sidewall front joints, and wherein the pair of primary sidewall rear links are pivotally connected to the rear frame at rear frame upper joints and connected to the rear floor crossbar supports at primary sidewall rear joints; wherein thev. a secondary sidewall assembly supporting the primary sidewall assembly, wherein the secondary sidewall assembly includes a secondary sidewall assembly front link and a secondary sidewall assembly rear link, wherein the secondary sidewall assembly front link is pivotally connected to the front frame at front frame lower joints, and wherein the secondary sidewall assembly rear link is pivotally connected to the rear frame at rear frame lower joints, wherein the front frame upper joints are mounted above the front frame lower joints, wherein the rear frame upper joints are mounted above the rear frame lower joints, wherein the folding frame has a folded position and a deployed position, further including: a rear basket hoop pivotally mounted to a right rear frame handle joint and a left rear frame handle joint, wherein the rear basket hoop extends from the pair of primary sidewall assembly rear links, wherein the rear basket hoop is rigidly connected to the pair of primary sidewall assembly rear links. 2. The locking floor folding cart of claim 1, further including: a rear basket hoop support supporting the rear basket hoop. 3. The locking floor folding cart of claim 2, further including: a handle support joint supporting the rear basket hoop support and pivotally connected to the rear basket hoop support, wherein the handle support joint is pivotally connected to a handle support upper section above the handle support joint and a handle support lower section below the handle support joint, wherein the handle support upper section is pivotally connected to a handle for supporting the handle, and wherein the handle support lower section is pivotally connected to the rear frame at a location below the handle support joint. 4. The locking floor folding cart of claim 3, wherein: the handle pivotally is mounted to the rear frame at a right rear frame handle joint and a left rear frame handle joint, wherein the handle includes a pair of handle extensions connected by a handle grip, wherein a left handle joint connects to a left end of the handle grip and right handle joint connects to a right end of the handle grip. 5. The locking floor folding cart of claim 1, further including: a handle pivotally mounted to the rear frame at a right rear frame handle joint and a left rear frame handle joint, a handle support joint supporting the rear basket hoop support and pivotally connected to the rear basket hoop support, wherein the handle support joint is pivotally connected to a handle support upper section above the handle support joint and a handle support lower section below the handle support joint, wherein the handle support upper section is pivotally connected to a handle for supporting the handle, and wherein the handle support lower section is pivotally connected to the rear frame at a location below the handle support joint. 6. The locking floor folding cart of claim 5, wherein the handle support joint locks at an angle where the handle support upper section and the handle support lower section are generally parallel to each other, wherein the handle support joint is pivotally connected to a rear basket hoop support, wherein the rear basket hoop support supports a rear basket hoop, wherein the rear basket hoop is pivotally connected to the rear frame, wherein the rear basket hoop extends from the pair of primary sidewall assembly rear links, wherein the rear basket hoop forms a first locking four bar mechanism with the rear frame, the rear basket hoop supports, and the handle support lower section, wherein the first locking four bar mechanism can fold to the folded position and deploy to the deployed position. 7. A locking floor folding cart comprising: a. a pair of front wheels;b. a pair of rear wheels;c. a folding frame including: i. a front frame supported by the pair of front wheels, and a rear frame supported by the pair of rear wheels;ii. a front floor member hinged to a rear floor member at a middle floor joint, wherein the front floor member is also hinged to the front frame, and wherein the rear floor member is also hinged to the rear frame;iii. a floor crossbar supporting the middle floor joint, the front floor member, and the rear floor member;iv. a primary sidewall assembly supporting the floor crossbar, wherein the primary sidewall assembly includes a front floor crossbar support and a rear floor crossbar support, wherein the front floor crossbar support is hinged to the rear floor crossbar support at a floor crossbar connector, wherein the floor crossbar connector is connected to the floor crossbar; wherein the primary sidewall assembly further includes a pair of primary sidewall assembly front links and a pair of primary sidewall assembly rear links, wherein the pair of primary sidewall assembly front links are pivotally connected to the front frame at front frame upper joints and connected to the front floor crossbar supports at primary sidewall front joints, and wherein the pair of primary sidewall rear links are pivotally connected to the rear frame at rear frame upper joints and connected to the rear floor crossbar supports at primary sidewall rear joints; wherein thev. a secondary sidewall assembly supporting the primary sidewall assembly, wherein the secondary sidewall assembly includes a secondary sidewall assembly front link and a secondary sidewall assembly rear link, wherein the secondary sidewall assembly front link is pivotally connected to the front frame at front frame lower joints, and wherein the secondary sidewall assembly rear link is pivotally connected to the rear frame at rear frame lower joints, wherein the front frame upper joints are mounted above the front frame lower joints, wherein the rear frame upper joints are mounted above the rear frame lower joints, wherein the folding frame has a folded position and a deployed position, further including: a foot stand having a pair of foot stand extensions and a foot stand extension crossbar, wherein the foot stand extends from and is rigidly connected to the rear floor member, wherein the foot stand is pivotally connected to the rear frame. 8. The locking floor folding cart of claim 7, further including: a rear basket hoop pivotally mounted to a right rear frame handle joint and a left rear frame handle joint, wherein the rear basket hoop extends from the pair of primary sidewall assembly rear links, wherein the rear basket hoop is rigidly connected to the pair of primary sidewall assembly rear links. 9. The locking floor folding cart of claim 8, further including: a rear basket hoop support supporting the rear basket hoop, and wherein the primary sidewall assembly rear floor crossbar supports angle upward from the floor crossbar connector to the primary sidewall assembly rear sidewall links, wherein the primary sidewall assembly rear sidewall links are pivotally connected to the rear frame, wherein the rear frame is pivotally connected to the secondary sidewall assembly rear link, wherein the secondary sidewall assembly rear link is pivotally connected to the primary sidewall assembly rear links. 10. The locking floor folding cart of claim 9, further including: a handle support joint supporting the rear basket hoop support and pivotally connected to the rear basket hoop support, wherein the handle support joint is pivotally connected to a handle support upper section above the handle support joint and a handle support lower section below the handle support joint, wherein the handle support upper section is pivotally connected to a handle for supporting the handle, and wherein the handle support lower section is pivotally connected to the rear frame at a location below the handle support joint. 11. The locking floor folding cart of claim 10, wherein: the handle pivotally is mounted to the rear frame at a right rear frame handle joint and a left rear frame handle joint, wherein the handle includes a pair of handle extensions connected by a handle grip, wherein a left handle joint connects to a left end of the handle grip and right handle joint connects to a right end of the handle grip. 12. The locking floor folding cart of claim 7, further including: a handle pivotally mounted to the rear frame at a right rear frame handle joint and a left rear frame handle joint,. a handle support joint supporting the rear basket hoop support and pivotally connected to the rear basket hoop support, wherein the handle support joint is pivotally connected to a handle support upper section above the handle support joint and a handle support lower section below the handle support joint, wherein the handle support upper section is pivotally connected to a handle for supporting the handle, and wherein the handle support lower section is pivotally connected to the rear frame at a location below the handle support joint. 13. The locking floor folding cart of claim 12, wherein the handle support joint locks at an angle where the handle support upper section and the handle support lower section are generally parallel to each other, wherein the handle support joint is pivotally connected to a rear basket hoop support, wherein the rear basket hoop support supports a rear basket hoop, wherein the rear basket hoop is pivotally connected to the rear frame, wherein the rear basket hoop extends from the pair of primary sidewall assembly rear links, wherein the rear basket hoop forms a first locking four bar mechanism with the rear frame, the rear basket hoop supports, and the handle support lower section, wherein the first locking four bar mechanism can fold to the folded position and deploy to the deployed position. 14. The locking floor folding cart of claim 13, further including a main basket having a rear main basket member and a front main basket member, wherein the rear main basket member is supported by a pair of main basket rear supports, wherein the front main basket member is supported by a pair of main basket front supports, wherein the pair of main basket rear supports are pivotally connected to the primary sidewall assembly rear floor crossbar supports, and wherein the pair of main basket front supports are pivotally connected to the primary sidewall assembly front crossbar supports. 15. The locking floor folding cart of claim 13, wherein the main basket is connected at a secondary sidewall assembly middle joint, wherein the front main basket member and the rear main basket member are connected together pivotally at the secondary sidewall assembly middle joint, wherein the secondary sidewall assembly middle joint is supported by the secondary sidewall assembly front link and the secondary sidewall assembly rear link.
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