Patents Assigned to Priority Co., Ltd.
  • Patent number: 11241768
    Abstract: A magnetic polishing machine includes a container which accommodates a polishing target and a plurality of polishing pieces, a plurality of rotation plates which are rotatably disposed below the container while a magnet is attached to the rotation plate, and a first rotation mechanism which rotates each rotation plate about a rotation axis of the rotation plate. The adjacent rotation plates are disposed at a position in which rotation areas thereof partially overlap each other.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: February 8, 2022
    Assignees: Priority Co., Ltd.
    Inventor: Tsugio Yamazaki
  • Patent number: 5044128
    Abstract: Articles are polished by a magnetically polishing machine having a high-speed rotatable magnet disc the top surface of which is divided by at least one diameter through the disc into alternating south- and north-polar zones, a fixed plate made of a nonmagnetic material and provided above the disc, a hollow cylindrical polishing vessel retainer provided above the fixed plate and including an elastic body made of a nonmagnetic material, the elastic body lining the inner cylindrical surface of the retainer, at least one polishing vessel made of a nonmagnetic material and removably retained in the retainer, and a device preventing the vessel from rotating. The machine and process of using the machine are applicable to an article made of a metal or a hard-plastic material and with a complicated configuration or a configuration which is desired to be as little deformed as possible.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: September 3, 1991
    Assignee: Priority Co., Ltd.
    Inventor: Osamu Nakano