Convertible hand dolly and cart

A heavy-duty all-terrain convertible hand dolly and cart combination comprising:

• an elongated chassis having first and second ends, first and second sides and an elongated V-shaped center channel having a channel bottom center member located several inches below the second side of the chassis;
• a load-support spade attached to the first end of the chassis and extending outwardly from the first side thereof;
• a pair of relatively large diameter rubber-tired wheels mounted near the first end of the chassis on the second side thereof;
• a wheel assembly mounted on the chassis near the second end of the chassis on the second side thereof when the combination is used as a horizontal cart, such wheel assembly comprising a single relatively large diameter rubber-tired wheel and a swivel mechanism for positioning the single wheel at a transversely central location near the second end of the chassis, the swivel mechanism enabling the single wheel to swivel with respect to the chassis;
• a pair of elongated panels set into the V-shaped center channel at approximately a ninety-degree angle relative to one another to provide an angular cargo area;
• and a riser plate assembly having a V-shaped plate member set into the V-shaped center channel parallel to and near the load-support spade and a plurality of support legs attached to the V-shaped plate member for engaging the load-support spade to enable the V-shaped plate member to function as a raised load-support spade.

A convertible hand dolly and cart combination comprising:

• an elongated chassis having first and second longitudinal support bars, a cross member attached between the support bars at one end of the chassis and a transverse spade plate attached between the support bars at the other end of the chassis and extending outwardly on a first side of the chassis;
• a transverse axle member attached to the chassis near the spade plate end of the chassis on a second side of the chassis;
• a pair of wheels individually mounted on opposite ends of the axle member;
• a single wheel mounted on the chassis midway between the first and second longitudinal support bars at the cross member end of the chassis on the second side of the chassis when the combination is used as a horizontal cart;
• a longitudinal side rail offset from, running along side of and attached to the first longitudinal support bar;
• a relatively rigid longitudinal metal retainer member attached at both ends to the load-bearing side of the first longitudinal support bar;
• and an elongated panel inserted between the first support bar and the metal retainer member and supported by the first support bar and the side rail to provide a horizontal cargo carrying surface when the combination is used as a horizontal cart.

A convertible hand dolly and cart combination comprising:

• an elongated chassis having first and second longitudinal support bars, a cross member attached between the support bars at one end of the chassis and a transverse spade plate attached between the support bars at the other end of the chassis and extending outwardly on a first side of the chassis;
• a transverse axle member attached to the chassis near the spade plate end of the chassis on a second side of the chassis;
• a pair of wheels individually mounted on opposite ends of the axle member;
• a single wheel mounted on the chassis midway between the first and second longitudinal support bars at the cross member end of the chassis on the second side of the chassis when the combination is used as a horizontal cart;
• a first longitudinal side rail offset from, running along side of and attached to the first longitudinal support bar;
• a first relatively rigid longitudinal metal retainer member attached at both ends to the load-bearing side of the first longitudinal support bar;
• a first elongated panel inserted between the first support bar and the first metal retainer member and supported by the first support bar and the first side rail to provide a horizontal cargo carrying surface when the combination is used as a horizontal cart;
• a second longitudinal side rail offset from, running along side of and attached to the second longitudinal support bar;
• a second relatively rigid longitudinal metal retainer member attached at both ends to the load-bearing side of the second longitudinal support bar;
• and a second elongated panel inserted between the second support bar and the second metal retainer member and supported by the second support bar and the second side rail to provide an additional horizontal cargo carrying surface when the combination is used as a horizontal cart.

A heavy-duty all-terrain convertible hand dolly and cart combination comprising:

• an elongated chassis having first and second ends, first and second sides and an elongated V-shaped center channel having a channel bottom center member located several inches below the second side of the chassis;
• a load-support spade attached to the first end of the chassis and extending outwardly from the first side thereof;
• a pair of relatively large diameter rubber-tired wheels mounted near the first end of the chassis on the second side thereof;
• a wheel assembly mounted on the chassis near the second end of the chassis on the second side thereof when the combination is used as a horizontal cart, such wheel assembly comprising a single relatively large diameter rubber-tired wheel and a swivel mechanism for positioning the single wheel at a transversely central location near the second end of the chassis, the swivel mechanism enabling the single wheel to swivel with respect to the chassis;
• and a riser plate assembly having a V-shaped plate member set into the V-shaped center channel parallel to and near the load-support spade and a plurality of support legs attached to the V-shaped plate member for engaging the load-support spade to enable the V-shaped plate member to function as a raised load-support spade.