Abstract: An extrusion head for a blow molding machine wherein a movable plunger is slidably mounted in a distributor head which receives a melt at an inlet end of its channel and directs it along such channel to the terminal end of the channel while simultaneously directing portions of it along spiral radial paths to the lower circumferential edge of the distributor head to fill an accumulator chamber which also causes the plunger to recede facilitating the filling of the accumulator chamber. The channel as defined by the adjacent circumferential wall and the curvilinear contour on the distributor head defines a smooth integral flow channel that is curvilinear in cross section.

Abstract: An extrusion head for a blow molding machine wherein a movable plunger is slidably mounted in a distributor head which receives a melt at an inlet end of its channel and directs it along such channel to the terminal end of the channel while simultaneously directing portions of it along spiral radial paths to the lower circumferential edge of the distributor head to fill an accumulator chamber which also causes the plunger to recede facilitating the filling of the accumulator chamber. The channel as defined by the adjacent circumferential wall and the curvilinear contour on the distributor head defines a smooth integral flow channel that is curvilinear in cross section.

Abstract: A bathtub hand rail having a molded plastic body with a hand-grip portion and a lower portion. A lip extends downwardly from the lower portion, and has a first surface for placement against a first side surface of the bathtub side wall. A second surface of the lip has a recess therein with a semicircular top wall, two vertical side walls, a bottom wall and a back wall. Extending through the lower portion of the body is a longitudinal rectangular slot. Received within the slot is a horizontal arm of a clamp arm assembly. A vertical arm of the clamp arm assembly has pivotally attached to it a press plate for placement against a second side surface of the bathtub side wall. The horizontal arm and the vertical arm are attached to one another. A threaded rod, which is pivotally attached to a locking handle at a head portion, is threaded into threaded receiving means in the horizontal arm through an orifice in the recess.