Motor vehicles – With rollers
Patent
1997-12-05
1999-05-25
Mai, Lanna
Motor vehicles
With rollers
16 35R, 16 26, 188 112, B62D 904
Patent
active
059062479
ABSTRACT:
A ball-transfer mechanism 1 is movable along the surface of floor 9, having a main body 2, a large ball 5, a plurality of small balls 6 and a restriction member 20. The large ball 5 is spherical and contacts the floor 9. A plurality of small balls 6 are disposed within portions of the main body 2 and support the large ball 5. Some of the small balls 6 are in rolling contact with the large ball 5, but upon rolling some of the small balls 5 move to a space defined within the main body 2 away from the large ball 5, while other small balls 6 move from the space back into contact with the large ball 5. The restriction member 20 can restrict a movement of all or a part of small balls 6 by contacting balls in the space within the main body 2 thereby restricting movement of adjacent small balls 6. The ball-transfer mechanism 1 has at least one restriction member 20, but can have a plurality of restriction members such as the restriction members.
REFERENCES:
patent: 3557401 (1971-01-01), Castors
patent: 3577620 (1971-05-01), Hoffman
patent: 3739894 (1973-06-01), Hinman
patent: 3744083 (1973-07-01), Jenkins
patent: 4696583 (1987-09-01), Gorges
Exedy Corporation
Jasmin Lynda
Mai Lanna
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