Abstract: The horizontal bar includes tubular members freely telescopically interconnected having lateral extending ends depending to outward facing U-shaped members having sufficient width to be disposed about the respective sides of a doorway, and to have frictional engagement therewith. A pivotal link is attached to the base of each U-shaped member and is slidably engaged with a respective wedge-shaped receiving bracket at each side of the doorway. The pivotal links may be engaged with the respective receiving brackets in a depending orientation for a lower position of the horizontal bar or may be engaged with the brackets in an upstanding orientation for a higher position of the horizontal bar.

Abstract: A full body weight traction device for rotating a human into inverted posture comprising generally U-shaped front and rear legs with the bases of the U-shapes resting on the floor and having upstanding sides terminating in pivot bearings, a shorter U-shaped trunion having upstanding sides also terminating in pivot bearings and having the base of its U attached to a tilt bed including a human torso supporting means and an elongated rail extending between the ankles of a user. The respective pivot bearings on each side of the front and rear legs and the trunion are pivotally connected by a pivot pin, permitting rotation of the tilt bed and folding of the legs for storage. The rail is provided with a hinge and lock which permits the rail to fold against the torso supporting means, whereby the tilt bed and legs fold into a configuration about the same length as the legs.

Abstract: An ankle supporting device for suspending a human in inverted posture is provided in which a generally U-shaped ankle-encircling member is configured to slip over a human ankle with the base of the U oriented towards the heel of the user's foot, and the ends of the U positioned over the metatarsal arch and including integral hooks so oriented as to be engagable with a horizontal bar with the user in inverted posture.

Abstract: A transparent lighting diffuser panel is provided for circular gas discharge lamps and having an inner surface, facing the lamp, comprising a generally cylindrical toroidal fresnel lens with the optical centerline of the lens approximately equal to the lamp circle diameter and coaxial with the center of revolution of the lamp tube; and an outer surface, facing away from the lamp, comprising an overall pattern of elongated linear triangular prisms in a radial pattern coaxial with the toroidal lens and the lamp.

Abstract: The horizontal bar includes tubular members freely telescopically interconnected having laterally extending end plates wedged-shaped and received in doorway brackets on opposite sides of the doorway. The brackets are wedged-shaped and include a passageway narrower in width to provide a friction fit between the side edges of the plates and the lateral ends of the brackets.

Abstract: A nebulizer comprising of an elongated body including a nebulized fluid emission opening at one end with a nebulizer fluid reservoir communicating with the opening and a fluid barrier means adjacent to the opening. A wick extends between the reservoir and barrier for conveying nebulizer fluid to the barrier region from the reservoir. A source of pressurized gas is within a housing along with a means for conveying the pressurized gas to the wick in the region of the barrier. The conveying means includes a perforated section which extends into the region of the wick and through the barrier. The pressurized gas traverses the conducting means and aspirates the nebulizer fluid during passage through the barrier. The perforated section is a helical spring and the wick is a carpet-like fabric. A novel form of perforated barrier in the form of a closely spaced helical spring is enclosed. A novel filter formed from a knurled rod within a passage also is disclosed.

Abstract: A circular gas discharge reflector lamp has a ballast supporting structure enclosing a ballast and having a male screw shell extending therefrom. Lamp engaging arms extend from the structure and hold a circular gas discharge lamp which is electrically connected to the ballast and screw shell in an operative circuit. A concave reflector partially enclosing the lamp and attached to the ballast supporting structure near the male screw shell. A lens attached at its perimeter to the perimeter of the reflector, which transmits the direct light emitted by the lamp and also transmits the reflected light from the reflector. The screw shell, ballast supporting structure, reflector and lens are joined together with continuously sealed seams whereby the reflector lamp is water tight.

Abstract: A substantially transparent one-piece glazing panel is provided for generally horizontal mounting in a skylight. The panel is comprised of an repeated pattern of two alternating and contiguous linear optical elements; a first optical element being an upstanding generally right-triangular linear prism, and the second optical element being an upward-facing plano-cylindrical lens in which the planar surface is reflectively opaque and is generally in the same plane as the base of the triangular prism.

Abstract: A tilt bed exercise device for rotating a human into inverted posture is provided with a pair of pivot bearings holding a rotatable tilt bed comprising a human torso conforming support with a beam extending therefrom and terminating in a rail canted at an angle wherein the proximal end of the rail is anterior of the user's ankles and the distal end is posterior to the user's ankles. A foot supporting means is slidably attached to the canted rail with selectable fixed locations suitable for different size humans. The user's ankles are held by supporting means including a hook on each ankle support engageable with the foot supporting means. A pivot stop is provided for the tilt bed wherein the foot supporting means is rotated past the vertical plane through the axis of the pivot bearings.

Abstract: A cylindrical tubular arrow shaft having a head end and a nock end with a length "L" is provided with a prestressing tension wire of approximately a length "L" with one end anchored at the head end of the arrow shaft and the other end anchored at the nock end, the tension wire having at least one elastomeric washer closely fitting the inside diameter of the shaft tube and supporting the tension wire coaxially with the shaft tube, the elastomeric washer spacing being approximately equidistant along length "L".

Abstract: The horizontal bar includes tubular members freely telescopically interconnected having laterally extending end plates wedged-shaped and received in doorway brackets on opposite sides of the doorway. The brackets are wedged-shaped and include a passgeway narrower in width to provide a friction fit between the side edges of the plates and the lateral ends of the brackets.

Abstract: A thermoplastic cylindrical clamp is manufactured by heating a flat sheet of thermoplastic material, thermoforming the softened sheet over a mold having two parallel and semicylindrical shapes with a narrow planar space between them and a coplanar flange surrounding, trimming the thermoformed sheet so the semicylinders are open at each end, locally heating the narrow planar portion between the semicylinders to the softening point, bending the softened portion so the semicylinders form a complete cylinder and cooling the part in the cylindrical shape.

Abstract: A fluorescent lampholder fitting has a fluorescent lamp having first and second ends respectively provided with starting filaments. The lamp is supported by a housing which also encloses a solid-state fluorescent ballast and which also incorporates a male screw base electrical connector for supporting the housing in a portable lamp or lighting fixture. The male screw base is provided with three electrical input connections so configured to be electrically connected and selectively switched when installed in a three-way lampholder of the portable lamp or lighting fixture. The lampholder fitting is provided with a center-tapped step-down transformer which has three terminals attached to the three respective connections of the three-way male screw base. The step-down transformer has a single low-voltage secondary winding which connects to the input terminals of a full-wave bridge rectifier which has its rectified output connected to a high frequency oscillator.

Abstract: A bow saw comprising a pair of elongated frame members interconnected by an over center hinge structure rigidly coupling the first and second frame members for relative movement between a parallel storage position and an angled operating position, and a saw blade mounted in tensioned relation between the ends of the frame members remote from the hinge structure, the saw blade locking the members in angled relation when tensioned therebetween. At least one of the frame members is hollow and its major length of minimum transverse dimension sufficient to allow the blade to be stored within the hollow member.

Abstract: A method for starting and operating a preheat type fluorescent lamp includes a source of alternating current, a fluorescent lamp having a low impedance starting mode wherein current passes through one or more starting filaments and a high impedance operating mode wherein current passes through the length of the lamp, a starting switch directing current through the starting filaments in the lamp starting mode, and an inductor ballast having a magnetically permeable core operating in a saturated condition when the lamp is in the low impedance starting mode and in a non-saturated condition when the lamp is in the high impedance operating mode.