Abstract: A swing check valve wherein the valve seat, cage and disc are in the form of a cartridge having an overall length substantially equal to the length of the valve body. The valve is for use between flanges where the flanges do not provide support to prevent movement of the cartridge upstream or downstream. The cartridge is held in place by cooperating shoulders and screws engaging the cartridge and the valve body.

Abstract: An apparatus, and method of using the apparatus, for use in a drill string inserted into a borehole to stabilize the path of travel of a drilling tool. The apparatus is attached to the lower end of a drill string, and comprises a tubular section having a passageway therethrough communicating with the drill string passageway and a sleeve telescoped over the tubular section having at least two camming surfaces on the outer periphery thereof, the camming surfaces being substantially on opposite sides of the sleeve and spaced longitudinally along the sleeve. The rotation of the sleeve on the tubular section is selectively controlled.

Abstract: A method and apparatus for disposing of water at gas wells. Water from the gas-water separator is circulated through an evaporator kept partially filled with water. Hot exhaust from the gas compressor is circulated through the evaporator in heat exchange relation with the water under conditions which permit the water to vaporize. The steam is vented to the environment. Venting of the steam from the evaporator is facilitated by feeding a stream of hot exhaust from the muffler into the evaporator.

Abstract: A center bar inserter having a frame for supporting a plurality of forks for pivotal movement about a horizontal axis is provided. Insertion of a center bar is preformed by simultaneously extending the forks into the concrete slab while the forks pivot about a horizontal axis. A pair of vibrating sleds are secured to the float pan reward of the center bar inserter for repairing the surface of the concrete slab disturbed by the insertion of the center bar.

Abstract: A musical instrument support removably connectable to a support having a first clip engageable with a portion of the support and a clip means connectable to a portion of the support and spaced a distance from the first clip. Stretch means are connected to the first clip and the clip means for stretchably connecting the first clip to the clip means. Support means are on the first clip for cooperating with the support to support a musical instrument.

Abstract: A monitor for monitoring motion wherein a light source is positioned a distance from a light conductor and the distance between the light source and the light conductor is varied in response to motion. The light received by the light conductor is used to provide output indications indicative of the monitored motion.

Abstract: A drum mixer is provided for producing an asphaltic composition. The drum mixer utilizes a first heat source located at an intermediate position within the drum mixer for producing a first current of hot gases directed towards the entry end of the drum mixer. The drum mixer also utilizes a second heat source located at the discharge end of the drum mixer for producing a second current of hot gases directed towards the entry end. Virgin aggregate is introduced into the drum mixer at the entry end of the drum mixer and is heated by the first current of hot gases. Recycle material is introduced into a mixing zone within the drum mixer between the first heat source and the discharge end. The heated virgin aggregate combines with the recycle material in the mixing zone and is further heated by the second heat source. Liquid asphalt is mixed with the virgin aggregate and recycle material in the mixing zone and the product is removed from the drum mixer at the discharge end.

Abstract: A safety assembly for use with firing weapons is provided. The safety assembly may be selectively positioned between an on position and a off position. In the on position, the safety assembly prevents the hammer of the firing weapon from pivoting from a firing position to a fired position. In the off position, the safety assembly permits the hammer of the firing weapon to fall from the firing position to the fired position.

Abstract: A wrapping for wrapping items such as floral arrangements comprising a material having a first end, a second end and a preset curl in the material whereby the material rolls over itself in an unrestrained condition. A method of wrapping an item whereby at least one item is disposed on the material while the material is in a restrained condition and releasing at least one end of the material so that an end of the material rolls over the item thereby wrapping the item.

Abstract: A bright light indicator adapted for use with a first vehicle for providing a high beam indication when a second vehicle having headlights emitting light and traveling generally behind the first vehicle has the headlights in the high beam condition. The indicator includes reflective means which are mountable on the first vehicle and positioned for receiving light emitted from the headlights of the second vehicle and for reflecting the received light generally toward the second vehicle in an on position of the reflective means, the reflected light providing the high beam indication.

Abstract: A stabilizer for use with a firing weapon to reduce the effect resulting from firing such firing weapon, the stabilizer having a tube with a first and second end and a tube opening extending a distance therethrough generally between the first and the second ends thereof, and hydraulic fluid being disposed within and substantially filling the tube opening. Closure means substantially closes the first and the second ends of the tube for cooperating to retain the hydraulic fluid within the tube opening and a piston is disposed in the tube opening with the piston being movable in a first direction generally from the first end toward the second end of the tube and in the second direction generally from the second end toward the first end of the tube. A first spring is disposed within the tube opening having one end engageable with one end of the piston and the opposite end engageable with the portion of the closure means closing the first end of the tube.

Abstract: A fine-needle aspirator for collecting a biosample from a subject into a closed sterile system. The aspirator is adapted for use with a variety of needles and comprises a motor driven pump capable of continuous suction in a biosample collection system. The biosample collection system may comprise a biosample connector such as elastomeric tubing in communication with the needle and a collection space in a biosample container whereby a biosample collected by the needle may be transferred to the collection space. A flushing substance flushes the biosample through the biosample collection system. Additives may be added to the biosample after collection in order to treat, preserve or analyze the biosample.

Abstract: An improved ceramic tile conveyor is provided having a pair of guide plates extending substantially the length of the conveyor. The guide plates provide an impact barrier protecting the ceramic tile from damage caused by contact with the revolving flights of the slat conveyor.

Abstract: A swing check valve wherein the valve seat, cage and disc are in the form of a cartridge having an overall length substantially equal to the length of the valve body. The valve is for use between flanges where the flanges do not provide support to prevent movement of the cartridge upstream or downstream. The cartridge is held in place by cooperating shoulders and a plate-like member engaging the cartridge and a groove in the valve body.