초록 ▼

A hand truck convertible into either one of a cart and an inclined cart includes a primary frame having a first pair of wheels rotatably mounted thereon. A secondary frame is pivotally attached to the primary frame and has at least one additional wheel rotatably mounted thereon. A connecting member

A hand truck convertible into either one of a cart and an inclined cart includes a primary frame having a first pair of wheels rotatably mounted thereon. A secondary frame is pivotally attached to the primary frame and has at least one additional wheel rotatably mounted thereon. A connecting member is attached to the secondary frame. A first locking mechanism is attached to the primary frame and detachably secures the secondary frame to the primary frame while the secondary frame is in the hand-truck-position and while the secondary frame is in the inclined-cart-position. A second locking mechanism is attached to the primary frame and detachably secures the connecting member to the primary frame while the secondary frame is in the inclined-cart-position. Alternatively, a channel is formed in the primary frame and the connecting member is slidably engaged with the channel.

대표청구항 ▼

1. A convertible hand truck, comprising:a primary frame having a first pair of wheels rotatably mounted thereon, said primary frame includes a channel; a secondary frame pivotally attached to said primary frame and having at least one additional wheel rotatably mounted thereon, said secondary frame

1. A convertible hand truck, comprising:a primary frame having a first pair of wheels rotatably mounted thereon, said primary frame includes a channel; a secondary frame pivotally attached to said primary frame and having at least one additional wheel rotatably mounted thereon, said secondary frame being movable into a hand-truck-position, generally parallel to said primary frame, a cart-position, generally perpendicular to said primary frame, and an inclined-cart-position, generally positioned at a predetermined angle with respect to said primary frame, said secondary frame, while in either one of said inclined-cart-position and said cart-position, causing said at least one additional wheel in combination with said first pair of wheels, to support said primary frame when said secondary frame is in one of said inclined-cart-position and said cart-position; a connecting member attached to said secondary frame and slidably engaged with said channel; a first locking mechanism attached to said primary frame and detachably securing said secondary frame to said primary frame while said secondary frame is in said hand-truck-position and while said secondary frame is in said inclined-cart-position; and a second locking mechanism attached to said primary frame and detachably securing said connecting member to said primary frame while said secondary frame is in said inclined-cart-position.