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 self-contained magazine for a firearm includes a housing for receiving a plurality of rounds therein, the housing including an open end through which rounds are loaded and unloaded, a follower provided in the housing, said follower being slidable along a longitudinal axial direction of the magazine, a spring biasing the follower toward the open end, to bias rounds toward the open end, an electronic counter means integrated in the magazine for calculating the number of rounds contained in the magazine upon loading rounds into and unloading rounds from the magazine, and display means for displaying the number of rounds in the magazine. The present invention provides a self-contained magazine for a firearm that incorporates all essential features for calculating and displaying the number of rounds therein as the number changes due to loading and unloading.

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.