PACKAGE STOP: Any of various devices, either manual or
mechanical, used to stop flow on a conveyor.
PARTS CONVEYOR: A conveyor used to catch and transport small
parts, stampings, or scrap away from production machinery to
hoppers, drums, or other operations. (PC, PCA, PCX, PCH)
PHOTO CELL: Electrical device used to sense product location.
PIVOT PLATE: The gusset that attaches the conveyor to the
support leg.
PLASTISOL COATING: Poly-vinyl chloride (PVC) covering for
roller tubes to prevent product damage or marking. Usually (#70
durometer) green or (#90 durometer) red in color.
PLOW: A device positioned across the path of a conveyor at
the correct angle to discharge or deflect objects.
POLY-TIER SUPPORT: Supporting members capable of supporting
more than one level of conveyor at a time. Each tier has vertical
adjustment for leveling the conveyor.
POP-OUT ROLLER: A roller, normally placed on the ends of a
belt conveyor used to aid in transfer, and set in a wide groove to
allow it to eject if an object comes between it and the belt.
PORTABLE CONVEYOR: Any type of transportable conveyor,
usually having supports which provide mobility.
PORTABLE SUPPORT: Supporting members that provide conveyor
mobility by use of casters or wheels.
POSITIVE CROWNED PULLEY: A pulley that tapers equally from
both ends toward the center, the diameter being the greatest at the
center. The crown aids in belt tracking.
POWER BELT CURVE: A curve conveyor that utilizes a belt,
driven by tapered pulleys.
POWER CONVEYOR: Any type of conveyor that requires power to
move its load.
POWERED FEEDER: A driven length of belt conveyor, normally
used to move product horizontally onto an incline conveyor
PRESSURE ROLLER: A roller used for holding the driving belt
in contact with the load carrying rollers in a belt driven live
roller conveyor.
PRODUCT FOOTPRINT: The surface of the product that comes in
contact with the belt rollers, or wheels of the conveyor.
PROXIMITY SWITCH: An electrical device to control some
function of a powered conveyor.
PULLEY: A wheel, usually cylindrical, but polygonal in cross
section with its center bored for mounting on a shaft.
PUSH BUTTON STATION: An electrical device that operates a
magnetic starter
PUSHER: A device, normally air powered, for diverting product
90C from one conveyor line to another line, chute, etc.
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