Abstract: A pressurized fluid cleaning system includes a fluid source, a discharge line leading to a spray discharge element, and a motor driven cleaner such as a cleaning brush to clean the spray discharge element. A sensor in the discharge line responds to fluid back pressure above a pre-established level (or to flow rate below a pre-established level) to actuate a cleaner "on" switch. Additionally or alternatively, a fluid sensor in an overflow line from the fluid source responds to fluid in the overflow line to actuate the cleaner "on" switch. The sensors are also connected to a warning device and to a delayed response system "off" switch to shut down the entire system for human intervention.

Abstract: A teething puppet includes a teether embodied in a hand puppet. The hand puppet includes a mitten for a baby's hand. The mitten is the upper torso of the puppet. The teether includes a handle end inside the mitten for gripping by the baby and a bite end outside the mitten. The bite end of the teether is also the head and face of the puppet.

Abstract: A hunting arrow includes a shaft with a thin outer coating of an elastomeric material for silent draw and release of the arrow. The coating is preferably of a self lubricating material, with a non-reflective matte surface.