|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||280/047.2; 280/047.16; 280/047.18; 280/047.27; 280/047.29; 280/047.33|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 17 인용 특허 : 12|
An auxiliary wheel set adapted for aftermarket installation on two-wheeled hand trucks. The apparatus includes a right vertical support and left vertical support, each having a leg portion with an upper section and a lower end, and a shoulder at its upper portion from which an upper arm extends outwardly substantially perpendicular to the leg. Each upper arm terminates in a curved elbow which connects the upper arm to a lower arm which extends inwardly and substantially parallel to the upper arm. A spreader bar is welded between the vertical supports to ...
What is claimed as invention is: 1. An auxiliary wheel set adapted for aftermarket installation on two-wheeled hand trucks and having a stored position and a deployed position, said apparatus comprising: a right vertical support having a right leg portion with a right upper portion and a right lower end, a right arm portion connected to said right upper portion and extending inwardly and substantially perpendicular to said right leg portion; a left vertical support having a left leg portion with a left upper portion and a left lower end, a left arm port...