Section 2: Overview 2-21
Ball Pit
The primary purpose of this area is to handle the initial impact of the pins and ball and direct the ball
into the ball accelerator.
The ball pit is made up of 3 main components:
• Ball Stop
• Carpet Mat (Pin Curtain)
• Pit Assembly
The Carpet Mat is a large piece of carpet like material that stops the rearward movement of the pins and
creates a black background behind the pin deck.
The ball stop is a thick piece of non-marking rubber designed to absorb the impact of the ball while at
the same time producing as little noise as possible. Refer to Figure 2-21.
The pit assembly is used to guide the ball to the ball accelerator’s ball door. The pit assembly frame
is sloped towards the back of the pinsetter where it is then tapered toward the ball accelerator. This
geometry allows gravity to force the ball into the accelerator.
Figure2-21.StringPinsetterMainComponents-SideView
(1) MAIN FRAME (2) SETTING PLATFORM (3) BALL RETURN KICKBACK
(4) PIN CENTERING CONES (5) PIT CARPET MAT (6) BALL ACCELERATOR
(7) BALL STOP (8) PIN DECK (9) PIT ASSEMBLY
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