(under subclass 209) Implement provided with a cover enclosing the ball and in contact with the ball or the edge of the ball seat to close the space between said ball and seat against egress of coating material.
(1) Note. The seal may be effected by the closure pressing the ball and seat into close-fitting engagement, with or without elastic deformation of the ball or seat, or by a portion of the closure coming into peripheral sealing engagement with the edge of the ball seat adjacent the ball.
SEE OR SEARCH THIS CLASS, SUBCLASS:
245, for the combination of a bifurcate nib pen and a removable cap which has a protrusion contacting and sealing a feed or air passage.
269, for an implement including the combination of a brush, broom, or mop type tool and an enclosing cap; and see the search notes thereto.
