Patent attributes
A fixture member includes: a pillar having a substantially horizontal sectional shape that is a U-shape; a plurality of chip portions fixed in the pillar; and an opening formed by a lower surface of one chip portion, an upper surface of another chip portion, and opposed inner side surfaces of the pillar. A support member is detachably attached to the opening. A receiving member is fixed to the support member. The chip portion has an upper slope surface, a first horizontal surface, and a lower slope surface. The support member has: a first contact surface to contact with the lower slope surface; a second contact surface to contact with the upper slope surface; a third contact surface to contact with the first horizontal surface; and a fourth contact surface and a fifth contact surface to contact with the opposed inner side surfaces of the fixture member.
