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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||280/047.18 ; 280/047.27 ; 280/652|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 52 인용 특허 : 8|
A hand truck which is convertible into a cart having an elevated tabletop surface. The hand truck has a primary frame which includes a first pair of wheels rotatably mounted thereon. The hand truck has at least one additional wheel adapted to allow the hand truck to be used as a cart. The primary frame is generally parallel to a supporting surface while the hand truck is being used as a cart. The improvement to the hand truck includes a plate movably attached to the primary frame and movable between a first position, generally parallel to and contacting ...
[ I claim the following:] [1.]1. A hand truck that is convertible to a cart, comprising:a primary frame having a first pair of wheels rotatably mounted thereon and a pair of arms pivotally mounted thereon;a secondary frame pivotally attached to said primary fame and having at least one additional wheel rotatably mounted thereon, said secondary frame being movable between a hand truck position, generally parallel to said primary frame, and a cart position, generally perpendicular to said primary frame, said secondary frame, while in said cart position, ca...