Abstract: An integral sheet of plastic material is shaped to conform to the bottom, sides, vertical one end and sloping other end of a bathtub. The upper edges of the sheet extend beyond the upper edges of the bathtub so that the depth of the liner is greater than the depth of the bathtub thereby lessening the risk of water splashing over the edge of the bathtub. The liner includes a drain opening in its floor positioned to overlie the bathtub drain opening so that water can be drained from the liner. An open ended cylindrical container is provided to store the liner when not in use.

Abstract: The applicator comprises a portable hand-held blower including a fan, a motor and heating wires to provide a stream of heated air out of an exhaust opening. A porous support element may cover the exhaust opening. A fabric material can be arranged to be draped about the motor housing in hooded fashion. Another fabric is arranged about the porous support element to provide a cushioned surface for engaging a body portion. This latter fabric material is impregnated with a medicant so that the heated air from the blower opens up the pores of the skin of a portion of the human body engaged by the fabric. The medicant is then easily absorbed thereby bringing relief to victims of arthritis and other aches and pains. The hood keeps the hot air generated by the blower in proximity to the body portion.

Abstract: The applicator comprises a portable hand-held blower motor with heating wires to provide a stream of heated air out an exit opening. A porous support element covers the exit opening and a fabric material is arranged to be draped about the porous support element to provide a cushioned surface for engaging a body portion. This fabric material is impregnated with a medicant so that the heated air from the blower opens up the pores of the body portion engaged by the fabric and the medicant is easily absorbed thereby bringing relief to victims of arthritis and other aches and pains.

Abstract: A transfer system is utilized for automatically transporting a master microfiche from a computer output microfiche unit to a duplicator unit, thereby avoiding the physical handling of the microfiche by operating personnel. In addition to effecting the transfer of the microfiche, the transfer system further diverts those microfiche with errors in their bar code instructions to an error hopper so that optimum use of the duplicator time in making copies is assured. Appropriate switches are provided for diverting all microfiche to the error hopper when the duplicator is being serviced. Also, switches are provided for bypassing the bar code reader so that all microfiche will go to the feed hopper for the duplicator regardless of whether or not an error in the bar code exists.

Abstract: The ultra light chair is designed for greater stability, higher performance, higher efficiency and overall better appearance than conventional chairs. A seat frame is provided separate from the main frame with seat mountings permitting longitudinal, tilt and height adjustments of the seat on the main frame. Unique wheel mountings permit simple manual removal and attachment of the wheels to the main frame, using only one hand. The same wheel mountings permit adjustment of the camber angle of each wheel relative to a vertical plane so that propelling and maneuvering of the wheelchair can be made easier than in the absence of any camber. The seat back for the chair is designed to fold down over the seat frame so that this feature in combination with easy removal of the wheels provides for compact storage during travel.

Abstract: For a given shutter size, the effective illumination or light transmission period is increased by one half that of the angles subtended by the aperture. This increase is accomplished by providing, in addition to a first shutter having an opaque section in the case of a camera of at least 180.degree., a second shutter having an opaque section of an angle equal to that subtended by the aperture. The second shutter is coaxially mounted with the first shutter and caused to rotate at twice the speed of the first shutter. By initially aligning the leading edges of the shutters with the start of the aperture, the aperture is effectively covered and uncovered in half the time which would normally be required by using a single shutter providing the same film transport period alone. As a consequence, the period of illumination is increased by the referred to one-half of the angle subtended by the aperture.

Abstract: An improved high torque fastener is provided of the type having a screw head with a generally bow-tie shaped driving slot formed with undercut side walls and an arcuately concave bottom wall for reception of an arcuately convex blade of a driving tool for relatively high torque transfer therebetween. The improved fastener includes a conical recess positioned centrally along the driving slot with a base diameter substantially greater than the width of the slot thereat and an apex disposed substantially below the slot bottom wall. The improved driving tool includes a conical tip formed centrally on an arcuately convex blade with a substantially pointed end projecting beyond the blade, wherein the blade and tip provide geometric surfaces for facilitated and aligned centering and coaxial substantial mating reception into the fastener driving slot and conical recess. Apparatus for forming the improved fastener is also disclosed.

Abstract: An optical system useful in lighting fixtures for uniformly illuminating large areas, includes a plurality of reflectors situated about a light source to cause light emitted by the light source to be concentrated in a first directional range measured from downward vertical, and to provide decreasing intensity of projected light with changes in the angle of projection from the first directional range to downward vertical. In one preferred form, four reflectors, each being a surface of revolution and spaced from the others to preclude any horizontal overlap, are utilized to concentrate the light emitted into a first directional range of about 65 degrees to 75 degrees. All of the light directed into this first directional range is either singly or doubly reflected. Unreflected light passes between a lower reflector and a central reflector to illuminate a middle directional range, and singly reflected light, which is redirected by a portion of an upper reflector, fills a lower directional range.

Abstract: An improved high torque fastener is provided of the type having a screw head with a generally bow-tie shaped driving slot formed with undercut side walls and an arcuately concave bottom wall for reception of an arcuately convex blade of a driving tool for relatively high torque transfer therebetween. The improved fastener includes a conical recess positioned centrally along the driving slot with a base diameter substantially greater than the width of the slot thereat and an apex disposed substantially below the slot bottom wall. The improved driving tool includes a conical tip formed centrally on an arcuately convex blade with a substantially pointed end projecting beyond the blade, wherein the blade and tip provide geometric surfaces for facilitated and aligned centering and coaxial substantial mating reception into the fastener driving slot and conical recess. Apparatus for forming the improved fastener is also disclosed.

Abstract: A process is provided for producing parfried and frozen potato product strips including but not limited to French fries, wherein the potato strips are adapted for reconstitution, immediately prior to consumption, in a microwave oven, conventional oven, convection oven, or finish fryer with highly desirable taste, color, and textural characteristics. The process comprises parfrying the potato strips under controlled time and temperature conditions to include two parfrying steps with an intermediate cooling step wherein the strips preferably are frozen to reduce the moisture content of the strips in accordance with a predetermined relationship of strip size, strip surface area, and moisture loss during processing.

Abstract: A single casing houses first and second blowers for expelling air through first and second outlet passages. One of the outlet passages incorporates a heater so that hot air can be expelled. The other passage is free of any heater so that cool air is expelled from the second passage. By alternately actuating the blowers, a person can be treated to hot air and then cool air.

Abstract: A slide projector system includes a projector and a removable slide cartridge which encloses an endless belt for transporting slides along a generally horizontal pathway. The removable cartridge, when loaded into the projector, advances slides to a viewing gate for projection onto a screen or the like, wherein the viewing gate is associated with an access port in the cartridge to permit direct loading and removal of the slides thereby facilitating the instantaneous projection and viewing of the slides as they are loaded. In one preferred form, the slides are carried along an oblong pathway for presentation at a single viewing gate whereat a drive spindle and a slide catcher wheel cooperate to individually hold the slides. In another preferred form, an expandable endless belt carries the slides along a generally Y-shaped pathway for presentation at either of two separate viewing gates.

Abstract: A folder having an opaque or transparent plastic template heat sealed along one edge to an overlapping opaque plastic layer. The template is rectangular and has rows and columns of rectangular openings therethrough. A lottery card is then inserted between the template and the overlapping plastic layer. The lottery card has rows and columns of indicia outlining rectangular areas thereon, all of which may be placed in registration with the template openings. Selected areas may then be filled in by hand with a ball point pen or pencil or other writing instrument.

Abstract: A flat TV screen is provided by overlapping rows and columns of fiber optics. Each cross-over point will emit more light than radiates from the side of a single optical fiber when both of the crossing fibers are energized. Therefore, a dot matrix can be generated by controlling the entrance of light into the ends of the optical fibers in the rows and columns. The rows of optical fibers are sequentially energized by a light signal of constant brightness. The columns in turn are successively energized during the time period that each row is energized with signals derived from a TV video signal to thereby provide an optical reproduction of the TV signal from the dot matrix of light defined at the cross over points of the rows and columns.

Abstract: The system effects positioning of an art work at precise given X and Y rectangular coordinate points. This art work may correspond to drill hole positions in a printed circuit board. By recording in memory the exact rectangular coordinate points on the art work and the necessary servo signals to effect exact centering at the coordinate points, accurate circuit board drilling can be carried out. A circular hole is provided in the art work and an image of this hole projected to a screen having horizontal and vertical cross hairs defining X and Y axes respectively. The art work is precisely positioned at a given pair of rectangular coordinates when the intersection of the cross hairs corresponds exactly with the exact center of the image of the circular hole. Exact centering is achieved by causing first and second light responsive photo cells to oscillate along the X and Y axes directions respectively, the centers of oscillation of the cells corresponding to the intersection point of the cross hairs.