|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||280/033.992; 280/010; 280/008|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 4 인용 특허 : 12|
A wheeled cart, such as a shopping cart, has ski elements on the wheels thereof. The ski elements can be moved between stored and use positions.
What is claimed is: 1. A shopping cart wheel system comprising: A) a carriage for a shopping cart, the carriage including two rear wheel supporting brackets and two front wheel-supporting brackets; B) a wheel-supporting axle rotatably mounted on each wheel-supporting bracket; C) a wheel rotatably mounted on each wheel-supporting bracket; D) a ski element rotatably mounted on each wheel-supporting bracket, the ski elements including (1) two rear ski elements, each rear ski element including (a) a pivot bracket rotatably attached to the axle associated wi...