Rolling device, especially for furniture, luggage cases and the like
OwnerRomualdo Monteiro de Barrosinventor
Life of this patent
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Abstract
The present utility model refers to a rolling device and, more particularly, an improved multi-directional ball caster-type device having a better contact angle between the ball and the ground. The contact angle of the present improved device is from 62° to 50°, or less. As the contact angle can be smaller, the object supported on the rolling system can be more sloped, for example, a luggage case, without having friction between the main ball involving structure and the ground.
Claims15
Multi-directional ball caster-type device comprising:
- a lower structural member;
- at least one lower ring of rolling balls;
- an upper structural member;
- at least one upper ring of rolling balls;
- and
- a main rolling ball;
- said main rolling ball being enclosed by the lower and upper structural members wherein said lower structural member has at least one lower groove in which said lower ring of rolling balls is inserted, and an opening, which diameter is smaller than the diameter of the main rolling ball, and through which a portion of said main rolling ball contacts the ground;
- said upper structural member has at least one upper groove in which said upper ring of rolling balls is inserted, and a chamber in which the main rolling ball is arranged.
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Multi-directional ball caster-type device, according to at least one of the preceding claims, characterized in that it has a slope of the device at an angle of 60°, or less.
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Dependencies are inferred from the claim text.