| 摘要 |
A convertible hand truck convertible between a two wheel hand cart for vertically loading of materials and a four wheel hand cart providing a horizontal material loading platform. The wheel structure for providing the four wheel configuration is pivotably secured to the two wheel structure and movable between the two wheel and four wheel configurations. The two wheel configuration mounts locking means for locking up the wheel structure for the four wheel configuration thereto. The locking means is constructed and defined with minimum parts and operable between locking and unlocking position based on sliding action to minimize wear on the locking means. Release means are provided that are operative with the user's foot to release the locking means to permit the wheel structure for the four wheel configuration to be released from a locked up position, hands free, to commence the reconfiguration to the four wheel cart.
|
