|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||280/047.24 ; 280/040 ; 280/038 ; 280/047.27 ; 280/047.315|
|발명자 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 42 인용 특허 : 8|
A handcart is constructed to include two main frames having outward expanded shoulder and lower portions, an extension handle assembly, an upper crossbar, a lower crossbar, a carrier, and two wheel holders. The two main frames have two upper ends fixedly received in side holes formed at the upper crossbar and two lower ends pivotally connected to the carrier. The extension handle assembly includes two outer pipes, two inner pipes, and a top handle. The upper crossbar is provided with a mechanism means to control the extension and collapse of the inner pi...
[ What is claimed is:] [1.] A handcart, comprising a frame structure that includes two main frame elements (10,10) having upper and lower ends, an upper crossbar (30) connecting the upper ends of said main frame elements, and a lower crossbar (40) connecting said frame elements below said upper crossbar;first and second pipes (22,22) extending between said upper crossbar and said lower crossbar; an extensible handle assembly comprising third and fourth pipes (21,21) telescopically slidable in said first and second pipes, and a handle handgrip (23) connec...