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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/191 ; 180/11|
|발명자 / 주소||
|인용정보||피인용 횟수 : 3 인용 특허 : 1|
A self-propelled handtruck including a frame and having at least one driven wheel and at least one non-driven wheel such that the handtruck may be selectively positioned in either a self-propelled position or an operator-propelled position. The frame includes a vertical frame member. A drivetrain mounting structure is secured to the vertical frame member. The drivetrain mounting structure preferably provides for selective positioning of the same along the vertical frame member so that the center of gravity of the handtruck may be varied as desired. A dri...
A self-propelled handtruck, comprising: a) a frame including a vertical frame member; b) at least one first wheel mounted on said frame for free rotation with respect to said frame; c) a drivetrain mounting structure secured to said vertical frame member; d) at least one second wheel rotatably mounted on said frame; and e) a drivetrain secured to said drivetrain mounting structure and operable to drive said at least one second wheel. f) wherein said drivetrain mounting structure is mounted substantially parallel with said vertical frame member and is adj...