Abstract: Hanger apparatus for suspending coiled tubing in a well including a tubing head having a vertical flow passage therethrough. An annular sealing assembly is carried in a low counterbored portion of the flow passage. A slip assembly is carried in an upper counterbored portion of the flow passage. The slip assembly is moveable between an outwardly expanded passive position in which the slip assembly does not interfere with the flow passage and an inwardly contracted active position in which gripping surfaces carried on the slip assembly engages the coiled tubing to support the weight thereof, the weight of the tubing being transferred from the slip assembly to the sealing assembly. Slip activators carried by the tubing head are manipulatable externally of the tubing head to move the slip assembly from passive positions to active positions. A method of utilizing the apparatus to install coiled tubing in a well is disclosed.

Abstract: Apparatus for filtering particulates from fuel being transferred through a nozzle into a fuel tank including an annular flange member and an elongated tubular mesh filter member having a proximal end of which is attached to the flange member, providing an opening through which a fuel nozzle may be inserted into the filter member, and a distal end which is closed so that particulates of predetermined size are prevented from flowing through the tubular filter member. The tubular filter member is provided, near the proximal end thereof, with a radially outwardly projecting protuberance, permitting insertion or removal of the apparatus into or from a tank only upon contraction of the tubular filter member.

Abstract: An improved storage tank of the type having a bottom, side walls and a floating roof in which the improvement comprises support legs and support sleeves for selectively supporting the floating roof at first and second elevations. The support legs engage the tank bottom and extend upwardly therefrom. The support sleeves are attached to the floating roof and extend downwardly therefrom. The support sleeves surround the support legs and are vertically moveable relative thereto from first positions in which the support sleeves engage the tank bottom to support the floating roof at the first elevation and second positions in which the floating roof may be supported by the support legs at the second elevation.

Abstract: An improved foot piece for attachment to a surfboard. The foot piece has an elongated fin-like body having an elongated flat base for attachment to the deck of the surfboard. Inner and outer side surfaces project upwardly from the base and curve in the same direction terminating in a tip. The inner side surface and the adjoining deck provide a laterally unobstructed curved pocket for lateral engagement by the medial side of a surfer's foot.

Abstract: A method of forming a porcelain tooth restoration from a positive replication of the tooth structure on which the tooth restoration is to be placed. Areas of the replication are coated with a liquid preparation which substantially inhibits moisture absorption by the replication. A slurry of powdered porcelain is applied over the coated area of the replication to form at least a portion of the tooth restoration which is cured and eventually separated from the tooth replication for bonding to the tooth structure.

Abstract: A safety retainer for preventing disengagement of a shackle bolt from a U-shaped shackle. The retainer includes a collar member and a pin member. The tubular collar member surrounds the head of the shackle bolt and is provided with a pair of holes through its walls, coaxially alignable with an aperture in the shackle bolt head, and a notch cut out of the wall of one end thereof for engagement with one arm of the shackle. The pin member is insertable through the pair of collar member holes and the shackle bolt aperture to prevent rotation and disengagement of the shackle bolt from the shackle.

Abstract: Modular light display apparatus for mounting a string of electric lights which has a plurality of light sockets and corresponding light bulbs connected at spaced intervals to electrically conducting wire. The light display apparatus comprises two or more pre-shaped modular light holders the ends of which are removably engageable with corresponding stationarily disposed objects to provide for mounting of the string of electric lights in a display of predetermined configuration. Each of the modular light holders comprises an elongated member of generally U-shaped cross-section to provide a channel in which the string of electric lights may be disposed. A plurality of uniformly spaced holders each one of which is engageable with one of the light sockets of said string of electric lights may be provided within the channel so that when viewed from at least one side of the modular light holder, the light sockets are hidden within the channel and the light bulbs project upwardly from the channel.

Abstract: A gas operated plunger for lifting well fluids from a subterranean reservoir to the surface through a well conduit comprising: a plunger body slidably mountable within the conduit having an upper portion, a lower portion and an intermediate cylindrical portion of reduced diameter; and a sealing assembly surrounding the intermediate cylindrical portion of the plunger body. The sealing assembly may include a plurality of longitudinally divided cylindrical segments of relatively smooth cylindrical surfaces for sliding and sealing contact with the well conduit walls to provide a seal which allows the plunger to gravitate through the well conduit to the reservoir and provides sufficient sealing upon an increase in gas pressure therebelow to elevate the plunger and well fluids thereabove to the surface.

Abstract: Apparatus for loading drums onto pallets including a support frame having a first area where the drums are moved to predetermined loading positions and a second area where drums may be placed on pallets for further handling. The frame supports a carriage assembly which supports a lift assembly. The lift assembly is engageable with the drums in the predetermined loading positions to lift them for transfer to the second area by the carriage assembly where they are lowered by the lift assembly onto pallets for further handling.

Abstract: Portable cooking apparatus which comprises a support stand for supporting the apparatus above a cooking fire; a pair of flat cooking grills between which food to be cooked may be placed and suspension members connecting the pair of cooking grills to the support stand. The suspension members are manipulatable for moving the pair of grills from a horizontal position to a vertical position and then to another horizontal position as the relative position as one grill on top of the other is reversed.

Abstract: Improved emission control apparatus for use with a diesel engine which may include an enclosed cylindrical housing having an inlet and an outlet. A particulate trap is disposed in the housing between the inlet and outlet for collection and removal of particulates from the engine exhaust. The particulate trap includes an upstream section of reduced diameter and a downstream section of a diameter greater than the cylindrical housing to form an annular pocket therearound. The upstream section is provided with peripheral walls in which are provided uniformly spaced, longitudinally disposed, slotted apertures.

Abstract: Lifting and towing apparatus for attachment to a towing vehicle having a winch thereon and the frame of which includes a pair of spaced apart longitudinal beams at least partially supported on a rear axle of said vehicle. The apparatus includes a support assembly extending transversely between the vehicle beams and opposite outer ends of which are attachable to opposing ones of the beams directly above the rear axle. An arm assembly extends rearwardly from the support assembly and has at least one lifting connection for connection to the winch and by which the distal end of the arm assembly may be lifted. A cradle assembly is connected to the distal end of the arm assembly for securing the front or rear wheels of a towed vehicle thereto for lifting above the ground in response to lifting of the distal end of the arm assembly by the winch.

Abstract: A self-propelled ground effect machine having an elongated body, on the underside of which is an air plenum chamber, and a motor driven fan for directing air flow to the air plenum chamber and for propelling the machine across land or water. The fan is disposed in a cylindrical shroud whose flow axis is generally parallel with the longitudinal axis of the elongated machine body. The axis of the shaft of the rotating fan is mounted at an inclined angle relative to a vertical plane passing through the longitudinal axis of the machine. A splitter device directs part of the air flow into the air plenum chamber and part generally rearwardly of the machine.

Abstract: A self-propelled lift truck comprising a forward carriage assembly which includes a pair of spaced apart ground engageable wheels and a vertical mast on which is mounted a forwardly projecting fork assembly for lifting and lowering of loads thereon by relative upward and downward movement and a rearward carriage assembly which includes at least one ground engageable wheel and on which is supported a power source for operating components of the lift truck. The forward and rearward carriage assemblies are connected by first and second transversely spaced apart support members, the forward ends of which are pivotally attached to the forward carriage assembly and the rearward ends of which are pivotally attached to the rearward carriage assembly. A power device is connected to at least one of the support members and is activatable to effect relative angular displacement of the elongated support members with the forward carriage assembly.

Abstract: An improved air filter assembly for removing particulates and undesirable gases from a stream of contaminated air including a first layer of filter fabric formed by parallel elongated semi-cylindrical surfaces joined at common parallel edges and a cooperating second layer of filter fabric contacting the first layer of fabric at its common parallel edges so as to leave elongated parallel semi-cylindrical voids therebetween. The voids are filled with gas sorbing materials.

Abstract: A method of abandoning an underground storage tank including the steps of: removing residuals, if any, from the tank and filling the tank with a mixture which includes water, sand, a binding agent and a material for promoting uniform mixing of said mixture. In one embodiment of the invention, a surfactant is added to reduce the amount of water required by the mixture.

Abstract: An improved lubricating system for continuous closed lubrication of bearings including: an oil mist generator; a distribution assembly for distributing oil mist from the oil mist generator to the bearings; a collection device for collecting excess oil and oil mist from the bearings and a return assembly through which excess oil and oil mist are returned from the collection device to an oil mist collection/supply vessel for reuse.

Abstract: A holder for a string of electric lights which includes a flat mounting plate on at least one side of which is provided first and second sets of mounting elements for mounting a series of lamps and lamp sockets of said string of electric lights in first and second rows at opposite ends of the mounting plate. Third and fourth sets of mounting elements may be provided on the opposite side of the plate. Each of the sets of mounting elements includes a row of uniformly spaced tabs between which are provided a row of uniformly spaced slots and a row of projecting pairs of elements providing another row of uniformly spaced slots therebetween.

Abstract: A fluid receptacle formed of a bag having first and second sides, the bottom and lower outer edges of which are joined to provide a central pocket. The intermediate and upper outer edges of the first and second sides of the bag are provided with cooperating sealing elements by which the remaining outer edges of the bag may be sealed. The sealing elements are disengageable to permit the first and second sides of the bag to be laid open on opposite sides of the central pocket.

Abstract: An improved fluid storage tank of the type having a bottom, side walls and a floating roof. A plurality of first support legs extend upwardly from the bottom. A plurality of second support legs extend from the floating roof. A power device attached to the floating roof is provided to rotate the roof between a first position in which the first and second support legs are not aligned, allowing the roof to be supported at a first elevation, and a second position in which the first and second support legs are aligned, allowing the roof to be supported at a second elevation.