Abstract: A dental x-ray alignment device is described for attachment to the extension tube of the x-ray unit. The device has a cylindrical conical frustum exterior shape with a central opening adapted to frictionally reside on the extension tube. An annularly shaped conical cavity is formed in the sidewalls of the cylindrical conical frustum, the cavity being open on one end joining the front face of the frustum. A plurality of light emitting sources are situated in the base or bottom of the frustum to emit light from the open end of the cavity. The light is projected onto the patient's face to circumscribe the x-ray beam pattern for certainty of x-ray beam placement during procedures. In an alternate embodiment, the invention is incorporated into the coupler and extension tube normally attached to the x-ray unit head.

Abstract: A portable boat dock consisting of a modified "H" shaped platform adapted to reside substantially underwater, the platform having attached to it two upwardly protruding arms with cradle members attached to engage opposite sides of a boat to be docked. The platform lower portion consists of a pair of spaced apart angled legs adapted to penetrate a distance into the lake bottom to secure the platform. Holding the platform upright is an attached elongated tongue, the tongue also operably attached to a front holding stake driven into the ground at the shoreline of the lake, the stake also containing a ring to receive a rope from the bow of the boat to secure the boat. The invention may be easily placed into the lake and removed by utilizing connecting pins which permit separation of the platform from the tongue and from the front stake. Various lake depths are accounted for by telescoping legs and various sized boats are accommodated by spreading or narrowing the angle between the upright cradle members.

Abstract: An inventive fixed fingering device adapted to secure a string of a guitar or other fretted stringed instrument at selected fret positions in order to quickly and easily vary the length of the string available for vibration to change the pitch when the string is plucked. The fixed fingering device describes a rectangular shaped block having formed through its width a transverse partial cylinder whose cylindrical side is open to the bottom of the device, the partial cylinder adapted to encompass and be secured to a selected fret on the fretboard, the transverse partial cylinder and the fret so shaped as to complement each other. In addition, lengthwise through the fixed fingering device is an opening through which is passed one of the strings. Lastly, a protruding lip is provided attached to the block shaped fixed fingering device to provide for lifting or levering the fixed fingering device off the fret by the operator's fingernail.

Abstract: A punching device for boxers to be used simultaneously by spaced apart facing boxers, the punching device connected to the floor with an extension coil spring attached to an upper post, the upper post then having oppositely situated outwardly extending punching or boxing bags, the punching bags attached to the upright upper post by separate extension coil springs. One boxer will hit one boxing bag causing it to retreat from his blow while simultaneously imparting motion into the opposite boxing bag, the resultant movement of the opposite boxing bag effected by the response of 3 extension coil springs. Such presents a boxing bag moving in an unpredictable path for the opposite boxer, who, in turn punches his bag which then effects the first boxers boxing bag. Such device provides unexpected response to another fighter's punches simulating movements of opponent boxers in a boxing or sparing match.

Abstract: A hunting point for attachment to arrows used in bow hunting having two thin flat metal blades juxtaposed each other held together by a rearwardly located tubular body, each blade having a sharpened projection first end adapted to precede the arrow in flight for initial penetration of the game animal hide. Upon penetration into the game animal, the hunting point goes through a metamorphosis wherein the front first sharpened end of each blade rotates to the point where it becomes the trailing end and the rear second end of the blade rotates to the front to become the forward leading point. By enabling such a metamorphosis, minimum resistance to the arrow in flight and to initial penetration of the animal's hide is achieved and maximum cutting area inside the animal is obtained after the initial penetration.

Abstract: An evaporative cooler is disclosed wherein at the four corners of the usual cube shaped cooler structure is added four outwardly protruding projections, each of the projections having louver openings on both its sides, as well as on the four sides of the cooler, with watered pads immediately behind in order to substantially increase the wetted pad area through which air flows into the evaporative cooler. In addition to the usual interiorly contained blower and water pump mechanisms in the cooler, a pad holding structure is disclosed to accommodate a single pad for each of the angled side members of the evaporative cooler, the structure including in addition to the side member a plurality of connected wire screens which attach to the side member at its edges, the wire screens and the side member compressibly encompassing a single pad over the whole side.

Abstract: A seal assembly (46) for a rotary drill bit (10) having a pressure balanced lubrication system is mounted in a pocket (48) between a journal (16) and a roller cutter (18). The seal assembly (46) has a pair of rigid seal rings (50,52) in sliding sealing contact with each other and a pair of elastomeric seal rings (54,56) in side by side relation sealing against the inner peripheral surfaces (62,64) of the rigid seal rings (50, 52) for continuously urging the sealing faces (58, 60) of the rigid seal rings (50, 52) into sliding sealing contact. The pressure balanced lubrication system has a pressure compensating diaphragm (38) and lubricant system has a pressure compensating diaphragm (38) and lubricant passages (40, 42, 44) extending directly from the lubricant reservoir (35) to the lubricant chamber (48A) in the pocket (48) for minimizing fluid pressure differentials between the lubricant chamber (48A) and the drilling fluid chamber (48B).

Abstract: A device to secure the top sheet of bedding from being accidently pulsed out at the foot of the bed is disclosed wherein an elongated piece of plastic material is provided for placement between the mattress and the box springs of a bed wherein the end of the tucked-in top sheet of the bed is in contact with one side of the elongated piece of material, and the other side of the elongated piece is in contact with the box springs. The top sheet securing device is constructed of materials which have a high coefficient of static friction such that the weight of the mattress pressing down upon the tucked-in top sheet is sufficient to provide compression of the plastic material between the top sheet and lower box springs that the top sheet is held in position against the unintentional or accidental pulling out.

Abstract: An external safety for application to handguns which effectively blocks rearward travel of the trigger to the point where the handgun is discharged, the external safety consisting of a trigger block adapted to be pivoted into the path of the trigger, and out of the path of the trigger as desired, by attached levers accessible to the operator. The trigger block and levers are secured upon the handle of the handgun by a pair of brackets operably attached to the handgun handle proximate the trigger and trigger guard. The brackets are situated on opposite sides of the handgun to pivotally receive the trigger block and lever assembly permitting it to be pivoted into the trigger blocking configuration or out of the trigger blocking configuration.

Abstract: A decorative necktie knot cover is disclosed adapted to be easily placed encompassing a necktie knot and removal therefrom, the decorative cover having a generally triangularly shaped front face with side panels on two of the three sides, the side panels having attached protruding tabs, and a top panel and rear panel; the front side, side panels, top panel, and rear panel folded to form a cavity receiving the necktie knot. Attached to the protruding tabs and to the rear panel are fastening means, the rear panel fastening means adapted to receive the protruding tabs fastening means to secure and define the cavity. In an alternate embodiment, the fastening means are attached only to the protruding tabs in order that they connect with each other behind the rear panel. The top panel attached to the top of the triangular face is so shaped to allow an opening on opposite sides to receive the necktie as it surrounds the person's neck.

Abstract: A compact disc removal tool for removing a compact disc from holding tabs in its carrying case, for transporting the disc to a compact disc player machine, and for replacement of the disc in its carrying case. The tool consists of a pair of longitudinally aligned, oppositely directed elongated arms having at their opposite distal ends outstanding cupped fingers adapted to encompass opposite sides of a compact disc, the arms connected at the point proximate each other to a central body split ring oriented transversely to the longitudinal direction of the arms. Centrally located on the removal tool on each arm proximal end for disengaging the carrying case disc holding tabs is a partial circular arc ridge adapted to engage the disc circular face, an adjacent circular arc depression, and a vertical circular wall interposed the ridge and the depression.

Abstract: An acoustically shielded speaker enclosure for use in the ear pockets of motorcycle helmets is disclosed wherein parasitic sound waves emitted from the rear side of an enclosed audio loudspeaker are prevented from entering the motorcycle rider's ear and from mixing with and distorting the primary sound waves issued from the audio loudspeaker directed at the rider's ear. The acoustically shielded speaker enclosure consists of a pair of joined together cup-shaped housing assemblies forming a shortened cylinder adapted to enclose and secure an audio loudspeaker, the enclosure having openings in one face of the housing assemblies to allow passage of the primary sound waves from the contained loudspeaker. An acoustic shield attached to the speaker enclosure cylindrical side extends to the edge of the ear pocket and is sealed there.

Abstract: A vented speaker enclosure for use in the ear pockets of motorcycle helmets is disclosed which carries off parasitic sound waves emitted from the rear side of an enclosed audio loudspeaker in order that the parasitic sound waves not be allowed to enter the motorcycle rider's ear and distort the primary sound waves issued from the audio loudspeaker. The vented speaker enclosure consists of a pair of joined together cup-shaped housing assemblies adapted to enclose and secure the audio loudspeaker, having openings in one face of the housing assemblies to allow passage of the sounds waves from the contained louspeaker, and a venting tube connected to an opening through the peripheral wall of the speaker enclosure, the vent tube carrying off and away the parasitic sounds emanating from the rear of the loudspeaker. The venting tube is situated in creases of the helmet inner cushion leading to the outside.

Abstract: A universal cup and saucer display is detailed and described having a pair of spaced apart, parallel elongated legs, attached by a plurality of cross members, the legs having decorative designs at each end. The bottom portion of the decorative designs provide feet for the base to rest upon a surface and the upper portion of the front design provide a concave catch to receive the circular rim of a basket or plate singularly displayed. An upper rounded rear portion of the leg rear designs secure a pivotal pin passing through a back rest consisting of a flat plate with wings attached along three of four sides, two of the wings being utilized to receive the pivotal pin. The back is adjustable to varying angles. Lastly, a removable cup insert plate is situated between the two legs proximate the front portion of the base, the cup insert plate having a centrally located opening to receive the side walls of a cup.

Abstract: A reverse circulation drill rod of the dual tube type having a pin and box at opposite ends with a floating inner tube concentrically situated, the inner tube permitted longitudinal freedom of movement. A plurality of inwardly protruding radial directed lands adapted to encompass and align the inner tube are contained within each box and pin. Compression springs attached to the inner tube residing interiorly to the outer tube provide the longitudinal freedom of movement within limits. As the sections of drill rod are assembled vertically during operation, freedom of lengthwise movement by the inner tube allows stacking of the inner tubes in order that a seal be achieved between the square ends of each inner tube section. Compressed air or liquid is forced down the cylindrical space annulus formed between the outer tube and the inner tube, and drill bit grindings or rock fragments, together with the fluid, is brought to the ground surface in the conduit provided by the inner tube for simultaneous analysis.