Abstract: This invention relates to a load retainer and retention means for said load retainer for use in a transport vehicle so that the load retainer can be moved to any desired location within a transport vehicle but cannot be readily removed from said transport vehicle. Further, the retainer can be removably connected to opposing walls of the transport vehicle to provide a partition between different loads and to retain said loads in a particular position. The retainer has three parallel flexible belts that extend from side to side and are interconnected by a rectangular sheet of durable material. Each belt has two ends with hooks thereon. Each belt corresponds with support tracks on either side of the transport vehicle, the support tracks having a series of similar openings therein. The hooks can be inserted within the openings and the belts tightened so that the retainer is held in a fixed position within the transport vehicle.

Abstract: A make-shift shelter has a hexagonal shape and can be errected and dismantled quickly and efficiently without tools. The various pieces of material that make up the shelter are flat and are easily stored. In one embodiment of the invention, the shelter is constructed from three sheets of plywood measuring approximately four feet by eight feet. Two tapered sides and a rectangular-shaped piece for the roof are formed from each sheet. The sides and roof pieces contain suitable openings so that a polypropylene rope can be threaded through said openings to hold the various pieces together to form the shelter.

Abstract: An expansion joint has a seal with symmetrical ridges located on either side. One support extends on each side of the seal and each support has a base and cover that together contain a channel. Each channel is formed from a groove in each of the base and cover, each groove having side walls that continuously diverge from one another to an open face of said groove. The channel is of similar size and shape, but slightly smaller than the ridge so that each ridge is held snugly under pressure in each of the channels. The peculiar shape of the channel allows the supports to be bend in a vertical or horizontal plane while maintaining the channel intact.

Abstract: A series of screens for use with a size reduction machine have a tapered apertured wall formed into a frusto-conical shape, with an open wide end and a narrow closed end. All screens of a particular series have a cylindrical section, the same interior depth, outside diameter and angle of the tapered wall. Despite variations in the material wall thickness, screens of the same series are interchangeable on a size reduction machine and the gap can remain constant without any adjustment to the impeller. Further, a size reduction machine has means external to the machine providing for infinite adjustments to the gap. With previous machines, each time that a screen of a different thickness was used, it was necessary to make an adjustment to the gap in order to maintain the same gap. Further, when an adjustment to the gap is required, that is accomplished by removing the screen and impeller from the machine and inserting spacers onto the shaft.

Abstract: A series of screens for use with a size reduction machine have a tapered apertured wall formed into a frusto-conical shape, with an open wide end and a narrow closed end. All screens of a particular series have a cylindrical section, the same interior depth, outside diameter and angle of the tapered wall. Despite variations in the material wall thickness, screens of the same series are interchangeable on a size reduction machine and the gap can remain constant without any adjustment to the impeller. Further, a size reduction machine has means external to the machine providing for infinite adjustments to the gap. With previous machines, each time that a screen of a different thickness was used, it was necessary to make an adjustment to the gap in order to maintain the same gap. Further, when an adjustment to the gap is required, that is accomplished by removing the screen and impeller from the machine and inserting spacers onto the shaft.

Abstract: An oven for heat treating, curing, stress relieving or otherwise treating objects within the oven has side walls that can be moved into contact and out of contact with side edges of a movable floor. All interior surfaces of the oven are insulated and, when the floor is located in the oven, the side walls can be moved so that the insulation on the side walls forms a sealed relationship with the insulation along the adjacent side edges of the floor. A door of the oven can then be closed. When the door is opened, the side walls can be moved out of contact with the floor and the floor can be removed. Preferably, the side walls are moved by the operation of pneumatic cylinders.

Abstract: A series of screens for use with a size reduction machine have a tapered apertured wall formed into a frusto-conial shape, with an open wide end and a narrow closed end. All screens of a particular series have a cylindrical section, the same interior depth, outside diameter and angle of the tapered wall. Despite variations in the material wall thickness, screens of the same series are interchangeable on a size reduction machine and the gap can remain constant without any adjustment to the impeller. Further, a size reduction machine has means external to the machine providing for infinite adjustments to the gap. With previous machines, each time that a screen of a different thickness was used, it was necessary to make an adjustment to the gap in order to maintain the same gap. Further, when an adjustment to the gap is required, that is accomplished by removing the screen and impeller from the machine and inserting spacers onto the shaft.

Abstract: A machine for building a dome or sphere has an extruder that extrudes part of a wall of a dome or sphere from fluid material which hardens on extrusion as the extruder travels around a center axis. A ramp allows the extruder to gradually ride up onto the initial wall so that another partial wall of the sphere can be formed. The extruder continuously moves along its own produced track in a spiral path to ultimately form a dome or sphere, as desired.

Abstract: A fin-line resonance isolator has layers of hexagonal ferrite material that are stacked relative to one another so that the overall length of the isolator remains substantially constant as the number of layers of ferrite material increases. The isolator has substrate materials that are arranged so that the plane of circular polarization is shifted to a center of the isolator. Isolators of the present invention are capable of producing improved responses over prior art isolators while reducing insertion loss and achieving a weight and volume saving.

Abstract: A two-wheeled bicycle trailer has a frame with a double tongue having two arms that extend on either side of a rear of a bicycle. The arms each have flat hands that are pivotally connected to said arms at a forward end thereof. A free end of said bands is pivotally connected on either side of said bicycle frame in the vicinity of a rear axle. As the trailer is towed and, particularly, as the bicycle turns, the bands automatically adjust for variations in the vertical height of the frame.

Abstract: A device for monitoring the process of toothbrushing has a handle that is electrically connected to signalling means. The handle has a neck and the neck is designed to consecutively receive various heads of toothbrushes. Removable and replaceable heads, with numerous bristles thereon, can be consecutively mounted on said handle. There are sensing means on the neck to continuously measure a bending moment of the area to which said sensing means is attached. As pressure is exerted on bristles of the head, that pressure is transmitted to said neck and the signalling means can be activated. The device is useful in teaching appropriate methods of brushing, thereby reducing or eliminating abrasion of the teeth. In addition to pressure, the device is able to monitor frequency, duration and direction of brushing.

Abstract: A flight has a wing with an elongated support rod embedded in said wing along a fixed edge thereof. To flight or wing has two free ends that are not affixed to said support rod. A metal cable is embedded in each of the free ends and extends from the free ends to the support rod. The metal cable in affixed to the support rod to reduce the possibility of the free ends breaking off from the remainder of the wing.

Abstract: A shoe is mounted between a frame and a sash of a window. The shoe has braking means that begin to engage almost immediately as the sash is rotated relative to the frame to prevent the sash from sliding relative to the frame. The shoe has a secondary means to assist in activating the braking means as the sash is rotated relative to the frame. When the sash is aligned with the frame, the braking means is automatically released and the sash and shoe can slide relative to the frame. The shoe and a projection that can engage with an indentation in the sash. The shoe has second engagement means that can engage with fourth engagement means on the sash to allow the sash to pivot relative to the shoe.

Abstract: A resaw has twin arbors with one to six blades mounted on each arbor. In addition, the resaw has a rotatable fence with a continuous belt along its periphery. Two side pressure rollers are mounted adjacent to the rotatable fence between an entrance to the resaw and the blades. A workbed of the resaw is made up of a series of spiked rollers. Just prior to an exit from the resaw, there is located a top roller which is mounted normal to the side pressure rollers and can move further away from or closer to the workbed. The arbors are each powered by an electric motor. The rotatable fence, the side pressure rollers and the spiked rollers are all powered by hydraulic motors connected to a single power source and all rotate at the same speed at any given time. The side pressure rollers are automatically adjustable so that they exert pressure towards the rotatable fence on any wood that is located between said rollers and said fence.

Abstract: A cam lock has a housing with a locking lever extending through an opening in said housing and being pivotally mounted thereon. The housing has a shoulder on an interior surface thereof surrounding said opening and the lever is surrounded by an abutment. In a closed position, the abutment forms a line of contact with the shoulder so that the opening is completely closed.

Abstract: A triple mode dielectric loaded bandpass filter has at least one cavity resonating in three independent orthogonal modes. A triple mode cavity can be mounted adjacent to either single, dual or triple mode cavities. Inter-cavity coupling is achieved through the iris having two separate apertures that together form a T-shape. The cavities can be planar mounted. The filter is designed for use in the satellite communication industry and results in substantial savings in weight and size when compared to previous filters.

Abstract: A waveguide lowpass filter has successive groups of three separate ridges spaced longitudinally in said filter. A center ridge of each filter has a larger cross-sectional area than two side ridges which are the same size. All ridges are parallel to one another in a longitudinal direction. The groups are associated with shunt capacitances and the spaces between adjacent groups are associated with series inductances in an evanescent mode. In operation, the filter is capable of supporting a TE.sub.10 mode in the passband and three modes, TE.sub.10, TE.sub.20 and TE.sub.30 in the stopband. The filter has a relatively high power handling capability as compared to previous evanescent mode lowpass harmonic filters.

Abstract: A horizontal slider window has an outer monorail that is approximately the same length as the outer sash. The outer monorail supports the outer sash and slides with said sash relative to a sill of the window. The outer monorail is maintained in a parallel position relative to an inner monorail by guide means located between the two monorails. The outer monorail rests on the sill and the guide means is protected from the elements. When the window is in a closed position, the outer monorail does not extend beyond the outer sash and therefore water cannot collect between the two monorails.