초록 ▼

A handcart has a handle, two inner pipes connected to the handle, a movable seat having a downward groove, an opening, two rail plates, two lateral through holes, two lateral recesses, two upper sleeves each receiving the respective inner pipe, two lower sleeves each connected to the respective uppe

A handcart has a handle, two inner pipes connected to the handle, a movable seat having a downward groove, an opening, two rail plates, two lateral through holes, two lateral recesses, two upper sleeves each receiving the respective inner pipe, two lower sleeves each connected to the respective upper sleeve, two outer pipes each inserted in the respective lower sleeve and receiving the respective inner pipe, and a lower seat having two lateral sleeves receiving two lower ends of the outer pipes. The lower seat has an upward groove. A press button has a downward protruded block with two flat laterals and two lateral flanges. A cover plate has two lateral protrusions. A hollow block has a notch, a post, an inclined face, and a rod. A positioning plate has a slant, a pillar, and a bar. The press button is inserted in the opening and disposed between the rail plates. The rail plates block the lateral flanges. The positioning plate is inserted in the notch. A spring is disposed between the post and the pillar.

대표청구항 ▼

[ I claim:] [1.] A handcart comprises:a handle,two inner pipes connected to two lower ends of the handle,a movable seat having a hollow interior, a downward groove, an opening, two parallel rail plates, two opposite lateral through holes, two opposite lateral recesses, two opposite upper sleeves eac

[ I claim:] [1.] A handcart comprises:a handle,two inner pipes connected to two lower ends of the handle,a movable seat having a hollow interior, a downward groove, an opening, two parallel rail plates, two opposite lateral through holes, two opposite lateral recesses, two opposite upper sleeves each receiving the respective inner pipe, two opposite lower sleeves each connected to the respective upper sleeve,two outer pipes each inserted in the respective lower sleeve and receiving the respective inner pipe,a lower seat having two opposite lateral sleeves receiving two lower ends of the outer pipes,two wheels disposed on the lower seat,the lower seat having an upward groove,a press button having a downward protruded block with two bevels, two flat laterals, and two lateral flanges,a hollow block having a notch, a post, an inclined face, and a rod,a positioning plate having a slant, a pillar, and a bar,the press button inserted in the opening and disposed between the rail plates,the rail plates blocking the lateral flanges,the positioning plate inserted in the notch,a spring disposed between the post and the pillar,the hollow block and the positioning plate disposed in the hollow interior below the press button, andeach outer pipe having a plurality of positioning holes formed on an upper portion of each outer pipe to receive the respective rod and the respective bar.