THREE-IN-ONE CONVERTIBLE HAND TRUCK

摘要

A convertible hand truck includes a primary frame, a secondary frame and a linkage member. The primary frame has a hook member and a pair of wheels rotatably mounted thereon. The secondary frame has at least one caster rotatably mounted thereon. The linkage member has one end pivotally joined to the primary frame, and the other end pivotally joined to the secondary frame. In particular, the primary frame is movable into (a) a hand-truck position, generally parallel to the secondary frame, (b) a reclined-cart-position, generally positioned at a predetermined angle with respect to the secondary frame, and (c) a platform-cart position, generally perpendicular to the secondary frame. And while the primary frame is in the reclined-cart-position or the platform-cart position, the hook member of the primary frame secures the primary frame to the secondary frame, and the pair of wheels of the primary frame cooperates with the caster of the secondary frame to support the primary frame.

主权项

1. A convertible hand truck, comprising:
a primary frame having a hook member on a top end thereof and a pair of wheels rotatably mounted on a lower end thereof; a secondary frame having at least one caster rotatably mounted thereon; and a linkage member having one end pivotally joined to the primary frame, and the other end pivotally joined to a lower end of the secondary frame; wherein the primary frame is movable into (a) a hand-truck position, generally parallel to the secondary frame, (b) a reclined-cart-position, generally positioned at a predetermined angle with respect to the secondary frame, and (c) a platform-cart position, generally perpendicular to the secondary frame; and while the primary frame is in either one of the reclined-cart-position and the platform-cart position, the hook member of the primary frame secures the primary frame to the secondary frame, and the pair of wheels of the primary frame cooperates with the caster of the secondary frame to support the primary frame.