| 摘要 |
An auxiliary pusher device for pushing a wheeled cart along a surface, the cart equipped with a handle for pushing the cart. The device includes an adjustable length chassis, a grip element connected to the chassis for engaging and gripping the handle of the cart, a drive wheel connected to the chassis, and a motor engaged with the drive wheel. The motor is operative to apply a drive force to the drive wheel, thereby applying a corresponding drive force to the chassis and via the grip element to the cart. The drive force includes a force component substantially parallel to the surface causing the cart to move on the surface. A hand grip is connected to the chassis allowing a user of the device to guide the direction of the cart. A parking station for the device and a method for use of the device is also discussed. |
| 主权项 |
1. An auxiliary pusher device for pushing a wheeled cart along a travel surface, the cart having rear and front ends and a rearwardly extending handle for pushing the cart, wherein the device comprises:
an adjustable length chassis having first and second ends; a grip element connected to said first end of said chassis for engaging and gripping the handle of the cart; a drive wheel connected to said second end of said chassis, adapted to frictionally engage the travel surface; a selectably operable motor drivably engaged with said drive wheel which, when activated, is operative to apply a drive force to said drive wheel, thereby applying a corresponding drive force to said chassis and via said grip element to the cart, the drive force including a force component substantially parallel to the travel surface, thereby causing the cart to travel therealong; and a hand grip connected to said chassis for guiding the direction of travel of the cart. |
