Abstract: The infinitely positionable coupling system of the present invention includes a hollow outer race, a hollow inner race, and a locking assembly which permits locking of the hollow inner race to the hollow outer race in an infinite number of positions. The hollow outer race engages a nose piece and the hollow inner race threadably engages the drill housing. Accordingly, the nose piece is infinitely positionable with respect to the drill housing by positioning the hollow inner race with respect to the hollow outer race and allowing the locking assembly to hold them in position one with respect to the other.

Abstract: A miniature electrical fuse has electrical lead wires (8) to permit the fuse to be connected into a circuit without use of a fuse holder. Wires (8) are resistance welded to electrically conductive end caps (4) closing off the end of a non-conductive tubular housing (3) containing a fusible element (1). Element (1) is connected to the caps (4) by solder joints (7) and caps (4) are connected to housing (3) by solder joints (6). The solder is a lead/tin alloy of high melting point. The end walls of the caps (4) are comparatively thick in relation to their side walls in the range 1.3 to 1 and 2.1 to 1.

Abstract: An improved clamp and clamp supporting apparatus includes a clamp of semicircular arcuate segments with enlarged ear portions having bolt studs positioned thereon in a staggered pattern. Through holes are drilled in the ear portions in a complementary pattern to receive the bolt studs of adjacent clamp segments with nuts threaded thereon to secure the clamps around abutting clamp hubs and maintain the hubs in sealed relationship. One of the clamp hubs has paired guide rods extending therefrom on opposite sides engaging mating holes in the clamp to allow positioning the clamp in a desired position without requiring additional support means.

Abstract: An improved low voltage igniter of the type having an annular spark gap between a center electrode and annular ground electrode which is arranged coaxial with the center electrode. The spark gap is shunted by an insulator surface. Semiconducting material is deposited on the insulator surface as one or more rings which are coaxial with and spaced from the electrodes. The semiconducting rings reduce the voltage required to initiate a spark across the spark gap.

Abstract: This invention discloses a system for initiating and enhancing combustion of fuel and fuel-air mixtures by discharging electrical energy in a spark gap. The energy to breakdown the spark gap is supplied by a high voltage direct current source which supplies a voltage high enough to cause initiation of the spark without the need for an intermediate transformer. Control of the high voltage is by way of a semiconductor switch, which is preferably a bulk photoconductive switch. Such a switch is capable of withstanding the high voltage applied across it when it is switched off. There may also be provided a further source of high voltage which supplies energy to the spark gap at a lower voltage then the first source after the spark has been initiated. Thus the length of time the spark lasts for may be controlled. This is particularly useful for use with lean fuel mixtures for fuel economy or with diluted fuel mixtures diluted through exhaust gas recirculation for reduced emissions.

Abstract: This invention relates to a rotary impulse screwing device which generates only one pulse per rotation of the output shaft. Two main and two additional lamellas are adjustably positioned in the output shaft. The two main lamellas seal at a minimum of two times per rotation of the output shaft. The two additional lamellas are adjusted independently via separate recess tracks to ensure that each additional lamella seals at only one point per rotation of the output shaft. The independently articulated additional lamellas further ensure that the load on the output shaft bearing is symmetrical on non-impulse points of rotation.

Abstract: An electrical plug assembly providing internal, adjustable gripping means and sealing means for electrical cords of various sizes. The internal, adjustable gripping means is a three-jaw grip assembly using pie-shape jaws which are slidably mounted on tracks and moved towards and away from the center of plug body to form a gripping circle around cords of various sizes. The cord seal consists of a notched rubber bushing formed between two rings. As the cover is tightened over the clamping jaws, the rings on either sides of the rubber bushing are urged together causing the bushing to collapse inward and seal the cord. The cord seal also provides means for locking the cord seal in place and increasing torque needed to remove the cover.

Abstract: An adapter providing electrical and water-tight mechanical connection between a spark plug cable and a high output terminal of a distributorless ignition system. An expandable, electrode extension is anchored in the ignition system terminal at one end and connected to the spark plug cable via a spark plug terminal at the opposite end. The extension fits within a rubber insert that is inserted into the ignition tower to provide a water tight seal.

Abstract: A time-delay fuse having a fuse element with a series of weak spots surrounded by a loose sand filler. The fuse element is connected to a trigger mechanism by solder or other meltable alloy. The trigger section provides overload protection and the fuse element provides short circuit protection resulting in a time-delay fuse which can be used in places where there are size restrictions.

Abstract: An improved method for draping curtains which allows one person to form a decorative window treatment without requiring any specialized skills or training. The method allows a curtain to be draped from a curtain rod of conventional configuration in a decorative manner about a window opening. The method uses hook and loop type fastening means to secure the curtain fabric to the curtain rod and thereby prevents the curtain from sagging at the top. Simple curtain rings are placed over the ends of the depending curtain fabric and then installed on the curtain rod near its ends to allow a portion of the curtain to form a decorative downwardly curved arc of fabric. The newly formed arc is then "dressed" or folded into pleats to complete the decorative window treatment. The improved method is also shown applied to a bay window treatment.

Abstract: An improved subsea tubing hanger having a body with an external shoulder for landing on a seat within a subsea wellhead housing, locking ring carried on the hanger to engage an interior recess of the wellhead housing, with an actuator ring for setting the locking ring. A preloading mechanism includes an extendible ring cooperating with the locking ring to prevent any movement of the tubing hanger when engaged and operable by torque supplied by the running tool. The improved tubing hanger running tool includes a body secured to the tubing hanger by conventional latching ring with a rotatable outer sleeve having an interior helical groove. A piston positioned on the running tool body and operated by hydraulic fluid pressure has an exterior pin which coacts with the helical groove to provide torque to the actuating ring and preloading ring of the tubing hanger.

Abstract: An insulating liner for an electrical plug which fits between the plug body and the plug assembly when conductors are located. The liner rotates within the plug body and is retained in the plug body by a tab and groove.

Abstract: This invention provides an ignition system for a spark initiated internal combustion engine such as an Otto cycle engine. High voltage pulses are generated, for instance by way of an ignition coil, and these are passed to the respective spark gaps by way of semiconductor switches. These semiconductor switches are preferably bulk photoconductive switch devices which each comprise a light source and a photosensitive switch. These devices are under the control of control circuitry which activates and deactivates the light sources approximately to distribute the high voltage pulses to the spark plugs. These switches may be used to improve the rise time of the potential across the spark gap or to generate a plurality of sparks in one gap from a single pulse.

Abstract: An adjustable hanger is slightly wider than the vertical vane and includes a horizontal slot through which the vane is pulled as it is installed in the hanger. To shorten the length of the vane between the hanger and the floor, additional vane material is pulled through the slot. The excess material that has been pulled through the slot hangs down on the opposite side of the vane and is invisible from the front of the blind. Each vane has its own adjustable hanger and can be adjusted individually.

Abstract: The method of making a miniature co-axial cable of the present invention includes the insertion of a pre-sized, conductive core into an outer cover with supporting material to center the core. The assembly is then heated and the thermoplastic cover and core supporting material is drawn down around the central core. The result is a miniature co-axial cable with a precise amount of air space, or dielectric region between the core and the outer cover.

Abstract: The invention is for a cord system for a dual function window blind. A looped cord acting with a master carrier controls the traversing movement of the vertical vanes. The other, smaller diameter cord controls the tilt of the vanes and is not a looped cord but a much thinner cord with a tassel attached at each end. The tilting is performed by pulling the tassels whereas the traverse is performed by pulling the heavier cord. The first, looped cord slides freely through holes in the tassels. The result is the appearance of a single cord with a tassel on each side.