Abstract: A well head assembly that terminates on the upper end in a horizontal mounting flange on which the flange of a christmas tree array of valves may be sealingly mounted to control the flow of fluid from the well associated therewith, and the well head assembly including slidably engageable first and second electrical conducting cartridges below the mounting flange for supplying electric power to a number of insulated electrical conductors that extend downwardly in the well to an electric motor driven down hole pump or other electrical apparatus. The positioning of the christmas tree array of valves at a minimum height relative to the well head is most desirable in those situations where a number of wells are drilled close together, such as on an off shore island, and equipment must be periodically moved over the array of valves for maintenance or drilling purposes.

Abstract: A spring loaded holder that includes a pair of rigid bodies that are laterally movable, which bodies define adjacent end surfaces of arcuate convex shape that may removably and frictionally grip concave end edges of gingival occlusal wings that are disposed outwardly from the base of an orthodontic bracket. When the bracket is so gripped it may be moved to a position where the surface of the base most remote from the holder may be bonded to a tooth. To prevent inadvertent rotation of the orthodontic bracket when so gripped relative to the holder, at least one of the pair of bodies includes an elongate protuberance that engage an anchor wire receiving groove in the surface of the bracket most distant from the base. The bodies if desired may be formed as an integral part of the holder.

Abstract: A generally semi-elliptical shaped wafer of a light weight material having upper and lower surfaces that may be pressure gripped between the bracket supporting teeth of an orthodontic patient, with the material being one that permanently deforms when substantial pressure is applied thereto, and as a result each wafer when subjected to such gripping having impressions formed therein that record the relative positions of the brackets and the teeth associated therewith. By using the wafers successively on patient visits to an orthodontist, a permanent record is maintained of the progress being made in straightening and aligning the teeth of each patient, or other corrective orthodontic work. In addition, the impressions of the brackets on the wafer indicate to the orthodontist the extent to which the arch wire must be bent or deformed to exert a desired force on the teeth for further corrective procedures.

Abstract: A rigid tie capable of being removably mounted on an end portion of an elongate pliable member such as a bungee cord that has a resilient core covered with a woven fabric, with the tie when so mounted serving as an anchor. A pair of the ties may removably engage opposite end portions of a pliable member to form an endless loop that is adjustable as to length by sliding the pair of ties towards or away from one another. A single tie if desired may be utilized to removably join the end portions of two elongate pliable members together.

Abstract: A hydraulically operated assembly that may be removably secured to the well head of an oil well to concurrently raise a tubing hanger that has a tubing string supported in either a centered or offset position therefrom to an elevation where replacements or repairs may be made to electrical components including the lower electrical connector. The tubing string upon being lifted is moved to a centered position in the blow out preventer to permit the latter to be closed to gain control of the well if necessary. The assembly eliminates the necessity of moving a rig over the well to service the electrical components therein.

Abstract: A rodent trap capable of being removably supported on an elevated wire to ensnare a rodent that nibbles bait on the trap or endeavors to walk over the trap. A pole removably secured to the trap serves to balance the trap on the elevated wire, and also permits the trap to be mounted on the wire and removed therefrom after a rodent such as a rat is caught.

Abstract: A quick release storage battery closure assembly for removably engaging the inspection opening defining bosses on a storage battery, the one that replaces the individual caps that normally are used for closing the inspection openings. The closure assembly is particularly adapted for use where the storage batteries are arranged as a group, such as on a golf cart or industrial vehicle.

Abstract: A free floating chlorine controlling assembly that continuously exposes a substantial quantity of a soluble agent to the water in a spa, hot tub, or pool, which agent may be one that tends to decrease the alkalinity of the water.

Abstract: A swing throw crank structure for transforming the reciprocating movement of a piston to rotary power that is delivered to a drive shaft at a substantially higher torque than that attainable when a conventional crank mechanism is employed for this purpose.

Abstract: A Mandrel and method of using the same to form an elongate rigid guide that has a first elongate portion over which an elastomeric tube may be slid. A second elongate end portion of the guide when axially aligned with the handle of a tennis or racquet ball racquet may be caused to removably engage the same. Anti friction means are provided on the guide to facilitate the longitudinal movement of the elastomeric tube thereon. The handle of the racquet has a transverse cross sectional area substantially greater than that of the interior of the elastomeric tube. After the guide is in engagement with the handle, the elastomeric tube is moved towards the latter. Prior to the elastomeric tube moving onto the handle it is radially expanded to conform to the exterior configuration of the handle. After the tube is mounted on the handle the guide is separated from the handle, with the tube frictionally engaging the tube to define a grip thereon due to the tube being circumferentially stressed.

Abstract: A wingless aircraft that has a generally truncated cone fuselage that has a cockpit in the upper thereof in which the pilot sits, and a transparent rigid dome mounted on the upper portion of the fuselage that extends over the pilot. A number of equally spaced, elongate, jet engine assemblies are pivotally and adjustably supported within the fuselage, with each engine in communication with an air inlet defined in the fuselage. Each jet engine assembly includes a combustion chamber that has an elongate tubular nozzle extending downwardly therefrom, in which exhaust openings are defined through which the hot gaseous products of combustion discharge. The exhaust openings are elongate and substantially angularly disposed relative to the vertical, and as a result the exhaust gases not only rotate the nozzle but exert a reactive force sufficient to lift the fuselage to an airborne position.

Abstract: A rear view mirror extension assembly that may be used in conjunction with the mirror support bracket on an automotive vehicle such as a pick-up truck, van or the like, and it is particularly useful when the vehicle is towing a travel trailer or boat to improve the field of vision for the driver of the vehicle rearwardly of the latter. The improved field of vision is desirable and increases the safety in driving a vehicle equipped with the invention on the highway, as well as permitting easier maneuvering of the vehicle drawing a trailer or boat into a recreational vehicle parking space.

Abstract: A mine lamp having an improved base structure and envelope that cooperate with the socket and lens of an underground miners head piece to maintain the lamp in a centered position relative to a reflector as the latter is manually adjusted relative to the lamp, and by so doing substantially increasing the light output from the head piece.

Abstract: An assembly for cleaning deposited minerals from the interior passages of first and second axially aligned tubular laterals that extend outwardly in opposite directions from a geothermal well head and removably support first and second gate valves from the free ends thereof. The cleaning of the passages in the tubular laterals as well as passages in the first and second gate valves may be conducted with the assembly without killing the well. The assembly also permits a third vertically disposed gate valve on the well head to be removed for repair and maintenance purposes without killing the well, and this is also possible with the first and second gate valves.

Abstract: An aircraft propulsion assembly in which a prime mover drives a rotating air stream generating element, situated in a generally circular housing that supports a ring shaped stator in which a number of circumferentially spaced slots are defined. An elongate nozzle is axially aligned with the rotating element, which nozzle on the forward end in cooperation with the housing defines a circular plenum chamber that is in communication with the slots. The plenum chamber on an inner portion thereof cooperates with the stator to define a circular aperture. A first portion of the air stream generated by the rotating element flows rearwardly through the nozzle and a second portion through the slots in to the plenum chamber to be compressed. The compressed air excapes from the plenum chamber through the circular aperture, and due to the Coanda effect flows along the interior surface of the nozzle as a cylindrical sheath at a higher velocity than the first portion of the air stream flowing rearwardly through the nozzle.

Abstract: An auxiliary apparatus for injecting water into the intake manifold of an automotive internal combustion engine at an adjustable visible rate that is related to the number of cylinders of the engine to achieve increased mileage from the vehicle and power output from the engine, eliminate pinging and Dieseling, minimize build up of carbon around the valves of the engine, results in the engine operating at a lower temperature, and allows the use of low octane fuel without detrimental results.

Abstract: A charge air cooling assembly in which water pressurized by air at reduced pressure from the air brake system of a vehicle powered by a two or four cycle Diesel engine is discharged intermittently as a spray into the intake or discharge of a turbo-compressor, in response to the demand pressure on the intake manifold of an engine to lower the rate of fuel consumption of the latter and increase the torque and power output of the engine.