Abstract: A soft nose, bonded lead core bullet for rifles and pistols and a method of making the bullets is disclosed. The bullets have a jacket of copper based material with a solid base portion and an upper nose portion having a cavity in which the lead core is located and bonded to the walls of the cavity. The walls of the cavity decrease in width away from the base and curves inwardly to form an ogive shape. The jacket increases in hardness and strength from the upper end of the cylindrical wall to the base of the bullet. The cylindrical wall has an outer lip between 0.012 and 0.020 inches wide and the ratio of the lip thickness to the bottom cavity wall thickness is about 0.18-0.20 for rifle bullets and about 0.3-0.4 for pistol bullets.

Abstract: Disclosed is an apparatus for storing and delivering a liquid cryogen. The apparatus is a dewar having a rotating liquid cryogen intake, a rotating gas supply/vent, and a rotating capacitance gauge. The rotating capacitance gauge comprises two elongated plates having outer edges shaped concentrically with the inner profile of the dewar on both ends that are electrically isolated from but fastened to one another with a small gap therebetween and electrical leads to the exterior of the dewar.

Abstract: An underwater pipeline is disclosed that arrests the propagation of a collapse or buckle that may occur as the pipeline is being laid or after the pipeline is in service. The pipeline comprises a plurality of joints of pipe connected end-to-end by a threaded connection. Each connection includes external cylindrical threads of opposite hand on adjacent ends of the pipe joints. A coupling having right and left-hand threads for moving the ends of the pipe joints into abutting position in sealing engagement with a seal ring to seal the connection. The connection provides a physical discontinuity in the pipeline to stop the propagation of a buckle in the pipeline. Additionally, by virtue of the thread profile, the coupling may provide radial support to the pin members to resist collapse.

Abstract: An attachment for a headgear having a flap depending therefrom to display an image and also providing a sun shield for the neck of the wearer. The attachment includes a flat strip that is preferably extruded from low density polyethylene material. Thus, it is pliable with plastic memory so that it tries to straighten out when curled in a suitable arc for matching the contour of a hatband. For headgear having a standard hatband, slitted tabs at opposite ends of the strip are separated so that the U-shaped tongue of each tab goes over the top of the hatband into the pocket therebehind. The attachment can also be secured to the webbing of a hard hat by slipping webbing straps through the slitted tab ends of the attachment strip. No special connection parts are required to be included in the headgear and the attachment is not size sensitive, but can be used in almost any size of headgear.

Abstract: There is disclosed a single-acting hydraulic jar having upper and lower detent pressure chambers having upper and lower restrictions, respectively, formed on the inner diameter of its outer tubular member and through which upper and lower detent means carried about the outer diameter of the inner tubular member may be moved in order to impart an up jar.

Abstract: There is disclosed a double acting hydraulic jar of such construction as to permit it to be "short cocked" during either an up or down jar, and further in which flow past a detent in metered in such a way as to permit lesser flow therepast during an upward jar than during a downward jar, whereby the rate of movement of the detent ring through a restriction, and thus the "delay", may be essentially the same during both up and down jars.

Abstract: An apparatus is provided for moving a toilet seat between a lowered position immediately above a toilet bowl and a raised position above the toilet bowl to assist a physically disabled person to use a toilet. The apparatus includes a toilet seat having a passageway therethrough, a baseplate positioned about the base of a toilet bowl, and a pair of fluid power cylinders supporting the toilet seat for vertical movement between a lowered position immediately above the toilet bowl and an raised position from which the person can easily move between a standing position and a position at least partially supported on the toilet seat. Each of the cylinders has a piston rod extending downwardly therefrom and connected to the baseplate. Fluid lines provide pressurized fluid to the cylinders through the passageway in the toilet seat.

Abstract: An apparatus for aerating polluted water is disclosed herein. The apparatus includes a tubular section defining a primary chamber having an opening in the side for admission of air from the surrounding atmosphere. A principle distribution chamber for receiving water to be aerated is connected to an upper peripheral edge of the tubular section and delivers water to a plurality of high speed nozzles that deliver accelerated sprays into the primary chamber. A tapering section is connected to a lower peripheral edge of the tubular section. A venturi section is connected to the lower peripheral edge of the tapering section. A single drain pipe including an upper peripheral edge is connected to a lower peripheral edge of the venturi and constitutes the sole outlet of the device. The nozzles create an air water mixture in the primary chamber and are directed toward the venturi to create a suction effect thereby drawing additional air into the primary chamber through the inlet orifice.

Abstract: The kick resistant door assembly comprises a doorway framed by at least two door jamb segments, a door mounted by hinges to one of the segments and a specialized plate assembly which mounts to both a door jamb segment and to adjacent framing studs. The plate assembly has an opening for receiving a bolt and an extended portion for reinforcing the latch of the door against forcible entry. The assembly may further comprise reinforcing rods attached either directly to the hinges or to an intermediate reinforcing hinge plate. In either configuration, upon installation the reinforcing rods extend into the door as well as through the door jamb segment into the wall studs. The assembly may yet further comprise the use of additional plate assemblies mounted adjacent the hinges of the door with the openings of these additional plate assemblies aligned for receiving the reinforcing rods of the hinges.

Abstract: A ram for a blowout preventer for coil tubing is disclosed. It includes a ram body having a flat face with a semi-circular cavity therein for engaging the flat face of an oppositely facing ram having a semi-circular cavity in its face. A seal member is carried by the ram to engage a seal member carried by the opposite facing ram to prevent the flow of fluid between the rams and a section of coil tubing extending vertically between the rams and encircled by the semi-circular cavities in the faces of the rams. An integral elastomeric pipe guide is carried by the ram to urge the tubing to the center of the preventer. A plurality of slip segments are mounted on the ram in the semi-circular cavity on opposite sides of the seal member to engage the tubing and hold the tubing from moving downwardly or upwardly relative to the ram.

Abstract: Disclosed is a rotational flagpole pivotally mounted to a rigidly affixed base with a tongue and slot combination that enables the flagpoles to rotate around the pivot. The flagpole can also be locked in place to prevent rotation. The rotational flagpole thereby permits rotation of the top end of the flagpole to within a few feet of the ground in order to provide improved access to the top end for maintenance.

Abstract: Disclosed is an air-applied, mechanically-held brake assembly and a vehicle air brake system employing the same. The air brake system typically includes a push-pull or hand-brake valve for park and emergency applications, a treadle valve for service applications, reservoirs of air under pressure, and other valving and plumbing. The brake assembly applies and releases the brake upon the supply and exhaust, respectively, of air from a first pressure chamber. The brake assembly locks and unlocks the brake in an applied position by the exhaust and supply, respectively, of air from a second pressure chamber. The locking mechanism of the brake assembly is designed to compound the force of the fluid pressure in the first pressure chamber with the force of the fluid pressure supplied to the second pressure chamber when unlocking the brake to compensate for back pressure.

Abstract: An apparatus and method are provided that comprise the use of a water-filled vessel having two vertical sections and two horizontal sections that connect the respective upper and lower ends of the vertical sections. A sprocket is mounted for rotation with a horizontal output shaft in one of the horizontal sections, and an idler pulley is mounted for rotation in the other horizontal section. An endless drive chain carrying a plurality of gas receptacles, or buckets encircles the sprocket and the idler pulley within the vessel. A gas inlet is positioned at the bottom of the vessel such that a portion of the gas entering the vessel enters the open ends of the downwardly facing buckets and forces part of the water out of the buckets. The hydrostatic pressure of the water exerts an upward buoyant force on the gas in the bucket moving the bucket upwardly.

Abstract: An improved reduced distortion spring spider for geophones is disclosed that has the desired ratio of spurious resonant frequency to the natural frequency of the geophone and can absorb the sharp lateral forces imposed on the geophone during destructive testing and field usage.

Abstract: An apparatus is provided for supplying vacuum and compressed air utilities for dental and medical applications. The apparatus comprises a reciprocating piston air compressor for simultaneously producing vacuum pressure at an intake valve thereof and compressed air at an exhaust valve thereof, the vacuum being used to draw air, water vapor, and effluent such as bodily fluids and tissue through a conduit. Effluent and water vapor are separated from the air stream and discharged into a drain. The desired vacuum is maintained by a regulator carried by the compressor. A receiver is also carried by the compressor for receiving and storing the compressed air from the compressor.

Abstract: A device for the treatment of polluted water having a primary chamber, a principal distribution chamber with an inlet connected to a source of polluted water, a secondary distribution chamber connected to a supply of polluted water, an air inlet orifice formed in the primary chamber for allowing air to pass into the primary chamber, a venturi connected in fluid communication with the primary chamber, and a drain pipe connected to the venturi. The principal distribution chamber has a spray nozzle connected thereto and positioned in the primary chamber. The secondary distribution chamber has a high-speed nozzle positioned within the primary chamber and directed toward the venturi. The venturi is a cone-shaped member with a wide end adjacent to the primary chamber and a narrow end adjacent to the drain pipe. The venturi is positioned below the primary chamber so as to accelerate a flow of an air/water mixture passing from the primary chamber.

Abstract: A tool for use in opening a locked door from its outer side by means of a rotatable doorknob on the inner side of the door is provided. The tool comprises an arm having a cup rotatably carried thereby and a handle manipulable from the outer side of the door. The cup is collapsible to permit it to pass with the arm under the door, but is normally expanded to a shape enabling it to fit over the doorknob. When the cup is passed with the arm beneath the door, the arm and the cup may be rotated by the handle to a position in which the open side of the cup is opposite the doorknob and then drawn back by the handle toward the inner side of the door to permit the cup to fit over the doorknob. Means are attached to the cup that is operable from the outer side of the door to cause the cup to grip and then rotate the doorknob to permit the door to be opened.