Abstract: A high speed fuse 8 having terminals 14 staked to non-electrically conductive end bells 12 with fusible element 30 connected to ridges 44 on terminal 14 by projection welding, and round balls 18 plugging sand holes 20.

Abstract: A shock absorbing roller deck bushing for rotary blast hole drills has a steel inner liner with a cylindrical axial bore for receiving a drill string. The liner is rotatably disposed within an outer shell mounted in the drill deck. A split retainer plate is attached to the outer shell and has an inwardly projecting flange around its inner periphery which is captured between a pair of radially outwardly projecting flanges around the outer periphery of the liner. The flanges permit limited lateral movement of the liner with respect to the outer shell, but prevent the liner from being removed axially from the shell. A plurality of shock absorbing cushion roller assemblies are mounted vertically in slotted cages between the liner and shell. The roller assemblies each include a shaft surrounded by a sleeve within a cushion coating bonded to the sleeve, with thrust washers between the ends of the sleeves and the cages.

Abstract: Disclosed is an ergonomic handle for a hand-held tool, in particular for an air tool. The handle has a trilobular shape, designed to provide a secure grip and thereby reduce operator fatigue. The handle is also flared at the end which sits nearest the workpiece. This flared feature allows the operator who presses downward on the handle while operating the tool to avoid having his hand slip past the end of the sleeve. The handle is not an integral part of the tool and can be removed to allow maintenance, repair or replacement of the tool. Moreover, in a preferred embodiment, the handle has a bore along its axis and is provided with a unique locking mechanism which prevents rotational or axial movement of the tool relative to the handle. Optionally, the outer surface of the handle is finished so as to reduce slippage in the event it becomes slick with perspiration or oil, and is made of a thermal insulating material to make use comfortable.

Abstract: Disclosed is a screening assay for determining the amount of Superoxide Dismutase (SOD-1) in extra-cellular body fluids, for use in determining Trisomy 21 Down syndrome in a fetus. The assay can be done by any of a number of well known techniques including Radioimmunoassay, an Enzyme Linked Immunoassay, or a luminescence assay, single or tandem antibody type, carried out in solid or liquid phase. Polyclonal or monoclonal antibodies can be used. In the preferred embodiment, the assay is used to determine SOD-1 levels in amniotic fluid. A level above a threshold indicates a high probability of Trisomy 21 Down Syndrome for the fetus.

Abstract: The tape measure includes a lock for locking the tape in an extended position from its case. The lock includes a toggle pivotably mounted on the case and a lock shoe extending from one end of the toggle to a position adjacent the tape. When the toggle is depressed, the lock shoe is forced against the tape so as to wedge the tape between the lock shoe and the case to prevent its retraction. The lock shoe includes a series of opposed recesses to permit the lock shoe to compress in length upon engagement with the tape. The lock shoe also includes a bend which translates the diagonal movement of the toggle into a vertical movement of the lock shoe.

Abstract: A bicycle transmission has drive pedals connected through a pedal shaft disposed in a pedal shaft hub on a bicycle frame. The shaft is selectively engageable with a series of gear pawls which are positioned to selectively engage one of a series of gears disposed about the pedal shaft. The gears are selectively engaged with an output sprocket meshed to a rear wheel sprocket. The pedal shaft includes a series of angled slots therein, in which a cam follower pin is disposed. The cam follower includes an actuator arm to cause one of the gears to engage the pedal shaft. The slots are sized so that reverse pedal rotation will cause the cam follower to axially actuate about the pedal shaft to cause disengagement and engagment of the gears.

Abstract: Disclosed are packers for use with a gravel pack system in an oil or gas well. The packers are of both the releasable and non-releasable, or sump type. The packers are designed so that after they are set or actuated and they seal against the casing wall or the well bore, fluid pressure in either axial direction on the packer seal will increase the energizing force on the seals. This self-energizing feature is accomplished with selectively disposed and sized annular seals on telescoping members.

Abstract: A lockdown screw having a gland nut threaded into a radially extending bore in a head. The radial bore is threaded only so far as to accommodate the gland nut. A stem is threaded into the gland nut for reciprocation into or out of the main bore of the head. The threads on the stem and in the gland nut are the sole working threads of the lockdown screw. A self-energizing packing is disposed around the stem for sealing between the stem and the radial bore. There is zero extrusion gap between the gland nut and the radial bore, adjacent and outwardly of the packing. A step shoulder on the stem carries the packing with it when the stem is removed from the head. An annular backseat shoulder on the stem is engageable with an annular backseat in the gland nut, forming a metal-to-metal seal, in the event of a leak.

Abstract: The adjustable tape measure clip includes a strip of spring steel folded over to form a primary spring with opposing leaves, the inner leaf being adapted for attachment to the case of the tape measure. The inner leaf includes a secondary spring for adjusting the spring force of the primary spring on the leaves of the clip. A mounting screw, which mounts the spring clip onto the case of the tape measure, also engages the secondary spring on the inner leaf to adjust the secondary spring force on the primary spring. As the screw is rotated, the secondary spring varies the primary spring force and thus adjusts the free clip width between the leaves to either increase or decrease the gripping pressure of the clip on the user's apparel.

Abstract: Disclosed is a method for treating menopausal symptoms and treating and preventing osteoporosis, wherein a true antiestrogen is administered and estrogen is not. This treatment is effective for female osteoporosis and can also be used to treat male osteoporosis. Examples of true antiestrogens are clomiphene, and its isomers, citrates and derivatives, as well as several other compounds which appear in the specification.

Abstract: An improved electrical fuse having axial leads (5) and comprising a fuse wire in a cylindrical sleeve (2) supported at its ends by lead carrying end caps (3) is coated over the length of the fuse body by an insulating layer of thermo-plastic (7). Improved humidity resistance and mechanical strength are achieved and control of coating thickness is improved. Use of hot plastic for the insulating layer (7) reflows solder joint (4) reducing instances of open or high resistance fuses which must be rejected. Also, the I.sup.2 t performance is significantly improved over other adherent coatings.

Abstract: An amphibious vehicle is comprised of pontoons, a drive system and endless tracks. The endless tracks are comprised of drive chains and hollow drive cleats in the shape of truncated pyramids.

Abstract: In the art of acoustic well sounding a gas-gun for the sudden discharge of a measured quantity of compressed gas, comprised of two chambers, viz. a discharge chamber closed at one end by a poppet, and on the opposite end by a power-head, the latter a cylinder including a sealed piston, with the poppet connected by sealed piston rod penetrating the cylinder head, and terminated at the piston. The entire assembly to be so proportioned that regardless of the position of the piston of gap remains between the piston and the cylinder-head penetrated by the piston rod. Means for connecting this gap to the inside of the discharge chamber through a check valve permits gas flow from the discharge chamber to the gap, but no in the reverse direction, and means for venting the gap to the atmosphere. A passage from the opposite side of the piston to the axial outlet of the discharge chamber, a spring or a positive locking device for pressing the poppet against the valve seat.

Abstract: A pumping unit has a drive train comprising a very large mass including large diameter series connected sheaves, one of which is a large crank sheave. The crank sheave is directly connected to a pitman arm which oscillates a walking beam, which in turn reciprocates a horsehead attached to a bridle. The bridle is connected to a polished rod associated with a downhole pump. The crank wheel, pitman arm, and rocking beam are arranged respective to one another to cause the tail bearing to oscillate predominantly in the second quadrant, and to cause the center of gravity of the pitman arm to be located predominantly between the vertical axis of the crank wheel and the Samson post bearing. The geometry of the crank wheel, pitman arm, and rocking beam provides substantially constant, positional of the polish rod on the downstroke, with rapid positional occurring at peak polish rod velocity, which causes a longer downhole pump stroke because of the induced elongation of the sucker rod string.

Abstract: A system for removal of oxides of nitrogen from the waste gas produced by various combustion processes discloses thoroughly mixing the waste gas with ammonia by means of a static mixing element and then passing the resultant mixture through a catalytic reactor. The ammonia may be supplied by reacting a portion of the waste gas with natural gas in the presence of a catalyst.