|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/019.1 ; 180/019.3 ; 280/653|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 41 인용 특허 : 3|
A power-assisted wheelbarrow applies an assisting function using an electric motor. Handle shafts connecting to the rear end portions of two handles are covered with grips which are allowed to move axially relative to the handle shafts. More than one steel balls are fitted between the handle shafts and the grips. At the sides of the grips or the handles, pushing force detecting sensors are disposed for detecting the axial movements of the grips relative to the handle shafts in accordance with the pushing forces applied to the grips. The operation of the ...
[ What is claimed is:] [1.] A power assisted wheelbarrow comprising:a tray frame;a wheel carried at a center of a lower portion of said tray frame;a pair of right and left handles respectively extending backward from two sides of said tray frame, said pair of right and left handles for carrying a material, to be placed on said tray frame, by combination of said wheel and said pair of right and left handles;an electric motor mounted on said tray frame;power transmission means interposed between said wheel and said electric motor for transmitting a power b...