|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||16/024 ; 16/042R|
|발명자 / 주소|
|인용정보||피인용 횟수 : 21 인용 특허 : 17|
A bearing caster for resting heavy objects thereon for permitting easy movement of the object. The inventive device includes a body with a pad provided on the top of the body. A plurality of rolling balls are rotationally mounted to the bottom (14) of the base to permit free rotation of the rolling balls.
[ I claim:] [1.] A ground engaging device for resting an object thereon, said ground engaging device comprising:a body having a top, a bottom, and a perimeter side, said bottom of said body having a plurality of cavities therein, said cavities being generally hemispherical, each of said cavities having a rolling ball disposed therein such that a portion of the rolling ball extends outwardly from said bottom of said body;a pad being provided on said top of said body;a base plate having top and bottom surfaces, and a plurality of circular holes therethroug...