Abstract: A method and apparatus is disclosed for displaying a single flat two dimensional picture in a lighted room where the area surrounding the picture has its stereoscopic cues suppressed to minimize the observer's two-eyed stereoscopic judgement of the location of the plane of the picture, whereby a binocular two-eyed observer can sense the inherent psychological depth indicators in the picture, and see the psyhically flat two dimensional picture as a three dimensional scene, much like a one-eyed observer sees it.

Abstract: A method is disclosed for projecting a pair of stereoscopic pictures (10, 11 or 23, 27) which can be seen in three dimensions without the observer (22) wearing special spectacles or using other optical aids. The system is adapted to be practical with relatively large screens (18, 30) in very compact forms including use as a table top computer display or in other restricted cabinets. The combination includes a pair of adjacent large projection optics (14, 15 or 28, 29) and a beam splitter (16, 26) capable of both light transmission and light reflection and which is positioned twice in the light path (12, 13) from the source to the observer, and which is particularly suited for compact forms of the device.

Abstract: A method is disclosed of projecting images on a screen which are so bright as to be easily visible in a lighted room, including projecting a pair of stereoscope pictures which can be seen in three dimensions without the observer wearing special spectacles or using other personal optical aids. The combination includes a large projection optic combined with a special screen which acts as a screen but which also has focus power and casts an image of the projection optic out in space in a limited viewing area for the observer's use in viewing a single two dimensional picture. In a modified form of the invention the large projection optic is divided into an array of segments where adjacent pairs of segments separately project each of a pair of stereoscopic pictures onto the screen.

Abstract: A method is disclosed to embed a perforated body in a cake of soap and to align that body perforation with a transverse hole in the soap so that a support post can easily penetrate the body hole to support the soap by the embedded body.The flat sheet like body is inserted edgewise into bar soap through a slot in the soap created during the soap extrusion. The problem of aligning the hole in the body with the hole in the soap during the high speed production of cake soap is overcome by first placing the body in the soap at the desired location within a distance of one half the diameter of the hole in the body. The final exact location of the body hole is achieved by a pointed punch creating a hole in the soap by the point on the punch picking up the body hole and shifting the body as needed by a corresponding sized portion of the punch entering the body hole.

Abstract: A temperature stabilized refrigeration evaporator coil for use with a mechanical refrigeration compressor and condenser is disclosed which gathers and retains its own latent heat sink material to temperature stabilize its air heat exchange surfaces. The evaporator is adapted to condense water from the air it is cooling, and to retain an adequate quantity of that water to employ as a liquid-solid phase change, latent heat sink to temperature stabilize the evaporator, air heat exchange surfaces, so that they do not become excessively cold during the on cycle of the compressor, and so that they do not become excessively warm during extended periods of the off cycle of the compressor.

Abstract: A non-frosting heat absorption system is disclosed for temperature stabilizing the heat absorbing surfaces thereof and includes a heat absorption arrangement such as a refrigeration system evaporator coil having a first series of heat exchange surfaces in good heat transfer relation therewith. A second series of heat exchange surfaces have portions thereof in good heat transfer relationship with a heat load such as air circulated thereby and other portions thereof immersed in and coupled to the first series of heat exchange surfaces by a heat storage arrangement including a phase change material such as water. The phase change material then permits the transfer of heat from the second series of surfaces to the first series of surfaces while allowing the second series of surfaces to be maintained near the phase change temperature of the material during various heat load conditions.

Abstract: A method and apparatus for embedding a washer or other perforated plate or body in the body of a cake of soap without leaving a penetration cut in the soap billet which might crack open on, for example, future soap bar moisture changes. The relatively insoluable washer or soap plate has a central hole which is aligned with a hole at least partially through the soap cake in the finished state. The soap cake is fabricated from a soap extrusion having an oversized hole centrally located and longitudinally extending along the extrusion, or the oversized hole can be otherwise provided in a soap extrusion. The extrusion is cut off into soap billets and conveyed to a machine location where a shaft inserts the washer into the central portion of the soap billet through the oversized extruded hole in the billet.

Abstract: A system for mounting optical sights is disclosed employing an elongated mounting base for attaching a sighting device to a firearm having a dovetail portion extending in the direction of elongation to form a pair of spaced apart sight clamp accepting grooves which extend parallel to one another in the direction of elongation. First and second recoil lugs extending away from the dovetail portion in opposite directions are also disclosed with the first lug engaging the firearm to prevent movement of the base relative to the firearm when the firearm is discharged and the second lug engaging the sighting device to similarly prevent movement of the sighting device relative to the base when the firearm is discharged. The dovetail portion slidably accepts complementarily contoured portions of the sighting device which may include a pair of spaced apart clamping legs for slidably engaging the grooves and tightening means between the legs to draw those legs toward each other to grip the base.

Abstract: A low profile gun sight suitable for use on a small firearm such as a handgun, is disclosed having a hollow sight housing containing optical elements including at least a collimating lens, a first fully reflective optical element and a second semitransparent optical element arranged in periscopic relation and fixed within the housing, and reticle indicia means movably supported within the housing, the housing having first and second openings at opposite ends of a sight path through the housing from an observer to a target which passes through the semitransparent optical element as well as a third opening for allowing light from the general target area to illuminate the reticle indicia so that a collimated image of the reticle indicia may be superimposed on the target view.

Abstract: A simple climate control device is disclosed which can independently, or jointly, to the degree desired, ventilate and/or dehumidify and/or cool a dwelling. The device provides a way of supplying fresh outside air to a building or other space at a preferred humidity level while optionally cooling the inside air, and as desired dehumidifying the inside air to maintain the inside environment at a preferred temperature and at a preferred relative humidity, with gradual displacement of stale air by fresh air.