Abstract: An elongated flexible open coil spring with spaced apart coils adapted to engage a guide pin on a slot car is placed in the slot of a model slot car track. Cars are positioned with their depending pins engaging the open coil spring to be carried around the track by a powered car held by and moving the open coil spring along the slot.

Abstract: An elongated flexible open coil spring with spaced apart coils adapted to engage a guide pin on a slot car is placed in the slot of a model slot car track. Cars are positioned with their depending pins engaging the open coil spring to be carried around the track by a powered car held by and moving the open coil spring along the slot.

Abstract: An elongated flexible sliding member with spaced apart coils, slots, or holes to engage a guide pin on a slot car is placed in the slot of a model slot car track. Cars positioned where the flexible sliding member engage the coils, slots, holes or detents in the sliding member to be carried around the track by a powered car held by the flexible sliding member.

Abstract: An elongated flexible sliding member with spaced apart coils, slots, or holes to engage a guide pin on a slot car is placed in the slot of a model slot car track. Cars positioned where the flexible sliding member engage the coils, slots, holes or detents in the sliding member to be carried around the track by a powered car held by the flexible sliding member.

Abstract: The invention contemplates an improved air flow sensor including a proximity switch which has a metal disk mounted with respect to the sensing face to be movable by air flow in the action zone of the magnetic field as between a position adjacent the sensing face to a position away from the face or visa versa whereby the switch oscillator is off and on respectively at the two extremes to provide an indication of the condition. The air flow sensor is shown herein in apparatus to calculate breathing rate, in object detection apparatus, and in vacuum lift apparatus.

Abstract: The invention contemplates an improved air flow sensor including a proximity switch which has a metal disk mounted with respect to the sensing face to be movable by air flow in the action zone of the magnetic field as between a position adjacent the sensing face to a position away from the face or visa versa whereby the switch oscillator is off and on respectively at the two extremes to provide an indication of the condition. The air flow sensor is shown herein in apparatus to calculate breathing rate, in object detection apparatus, and in vacuum lift apparatus.

Abstract: The invention contemplates an improved air flow sensor including a proximity switch which has a metal disk mounted with respect to the sensing face to be movable by air flow in the action zone of the magnetic field as between a position adjacent the sensing face to a position away from the face or visa versa whereby the switch oscillator is off and on respectivley at the two extremes to provide an indication of the condition. The air flow sensor is shown herein in apparatus to calculate breathing rate, in object detection apparatus, and in vacuum lift apparatus.

Abstract: A light director has an elongated, hollow, opaque open-ended shield. The shield slips over the glass housing of a light bulb. A pair of small apertures on the side of the shield receive portions of the glass housing in a sliding engagement which provide for the shield to be oriented in several angular positions. A plurality of flat, spaced apart slats extend across one open end and function to cause the light to exit in generally parallel beams.

Abstract: The combination of a lead screw and a multi-ball nut. The balls are disposed around the axis of the lead screw. The balls are mounted on the nut either to be received and retained in the valley of the lead screw thread (whereby rotation of the lead screw causes movement of the nut along the lead screw in one direction for a feed operation) or for the balls to be movable out of the valley onto the crest of the thread. The latter condition permits the nut to be moved along the lead screw in a reverse direction for a quick return operation.

Abstract: A control device in an anesthetic administering system which senses the dangerous condition of nitrous oxide flowing to the patient's breathing mask in the absence of oxygen flow to the mask and provides a warning signal so the condition is known and, thus, is correctable.

Abstract: Measuring apparatus has a pair of cavities which are put into a charge position to respectively receive precise quantities of resin and hardener from supply sources. The quantities are then transferred to a discharge position wherein the resin and hardener are pushed out of the respective cavities to feed a mixer. The additional material entering the mixer causes the same to eject mixed resin and hardener equal to the unmixed resin and hardener received.

Abstract: Plunger on a microswitch is provided with ball means arranged so that the ball means will move the plunger when contacted by a switch actuator moving in an axial direction or moving in any radial direction or combination of same.

Abstract: In an electrical control panel, one relay can be stacked on the other as follows: Without removing an installed relay, the screws holding the octal base of the relay are replaced by adaptors which extend up from the base beyond the relay housing. Another octal base is mounted on the ends of the adaptors by screws threaded into the same from the second base. Another relay is then plugged into the second base. The two relays now are in stacked position. The adaptors have a yielding connection which allows the new relay and base to be moved to provide a clearance space for access to the first relay and then returned.