초록 ▼

A substantially rectangular vehicle moveable on four casters located in the four corners underneath the vehicle. The front or rear pair of casters can be locked or unlocked electronically by a single individual propelling the vehicle from one end to facilitate movement over irregular surfaces or nar

A substantially rectangular vehicle moveable on four casters located in the four corners underneath the vehicle. The front or rear pair of casters can be locked or unlocked electronically by a single individual propelling the vehicle from one end to facilitate movement over irregular surfaces or narrow passages.

대표청구항 ▼

[ What is claimed is:] [1.] A vehicle for transporting cargo comprisinga substantially rectangular base having a front end, a rear end and two sides,two widely spaced casters located underneath the vehicle at both the front and rear ends of the vehicle said casters being freely rotatable horizontall

[ What is claimed is:] [1.] A vehicle for transporting cargo comprisinga substantially rectangular base having a front end, a rear end and two sides,two widely spaced casters located underneath the vehicle at both the front and rear ends of the vehicle said casters being freely rotatable horizontally about a vertical axis,means for locking the casters at the front or rear end of the vehicle to prevent such rotation of the casters while permitting caster wheels to roll in a direction parallel to the sides of the vehicle andmeans for substantially simultaneously unlocking the casters at the front or rear end of the vehicle to permit unrestricted movement of the vehicle in any side-to-side or front-to-rear direction wherein said means are powered electronically and can be actuated manually from one end of the vehicle by a single individual while propelling the vehicle without stopping or changing position.