Abstract: In a fishing rod assembly, a motion detection apparatus is mounted in the rod and includes a motion detector to sense any motion or tension in the line imparted to the rod when a fish strikes and to generate an electrical signal in response to such motion, a portable power supply, a light source and circuit control means responsive to the signal produced by the motion sensor to activate the light source, and a plurality of fiber optic elements are arranged for extension through the rod to produce a visual signal along the length of the rod when the light source is activated; and further the circuit means may include an audible alarm which is responsive to the same signal to produce an audible signal when motion is sensed in the rod.

Abstract: An illuminating circuit for the key slot in a locking device is made up of a high intensity light source which is mounted on the face plate of the lock in close proximity to the key slot, a piezoelectric crystal is mounted within or adjacent to the lock to respond to vibrations created, for example, by tapping on the face plate to generate an electrical signal, and a control circuit including a timer and battery respond to the electrical signal generated by the crystal to energize a light source for a predetermined time interval after receiving the electrical signal from the crystal.

Abstract: A baby rattle is made up of a light-transparent shell, a light source in the interior of the shell, an impact or motion-sensing member within the shell will generate an electrical signal to activate a control circuit between the light source and a portable power source to illuminate the shell. The impact motion-sensing member is preferably a piezoelectric crystal mounted within the shell, and a fiber optic array within the shell can be used in association with a light source to create different lighted displays.