The skittle/bowling (1) pin consists of at least 50% plastic, and has a base (2) consisting mainly of wood (3). The timber is in a cylindrical shape and set into the base. It is enclosed by a cup-shaped ring (7), which also forms the edge of the base. The ring has saw ...
Thus, the Spisak '276 patent system is not adaptable for use with removable hub caps because retrograde movement of the pin barbs would dig into the urethane and damage the same upon removal of the trim ring, which in turn would destroy the holding power of the spring fingers in the ...