Abstract: A method for fitting shoes comprises maintaining an inventory of shoes of different styles and sizes, wherein each shoe has a flat inner foot receiving surface and measuring the size, width and arch height of feet of a customer to be fitted for shoes. The proper size shoes of at least one style selected by the customer is selected and an orthotic is inserted onto the flat inner foot receiving surface of each of the selected shoes. The combination of the orthotic and the shoe is fitted on the feet of the customer.

Abstract: Apparatus for imprinting patient or subject identifying information in the form of a barcode on unexposed X-ray film employing a light and lens system utilizing a negative LCD to cast the shadow for exposure on the film. The light and lens system employs a point light source and a light path which is extended by folding the path and using mirrors. A double convex lens is employed in one embodiment at the end of the light path to direct the light through the transparent LCD containing the information in barcode form.

Abstract: An X-ray cassette 30 has a window 32 for mounting a back-lit LCD 34 to expose the film therein with patient identifying information in the form of a barcode. A strip of lead 38 opposite window 32 shields film 37 when cover 31 is closed. The LCD is activated after a sensor 56 connected to an X-ray tube 54 detects the discharge of X-rays. The patient identifying information may be read directly from the patient's bracelet 47 at the same time the X-ray is taken using barcode scanner 44.

Abstract: A flow selector and regulator for use in an I.V. administration arrangement which includes the capability of establishing the flow rate without calibration at the time of use and then automatically maintaining that flow rate regardless of changes in fluid pressure in either or both of upstream or downstream of the regulator. The regulator utilizes a diaphragm which is not subject to stretching or material stress prior to use to control an orifice. The regulator is capable of being calibrated at the time of manufacturer directly in terms of flow rate, something which is not possible in prior such devices. The diaphragm is clamped at the rim and has an arcuate torus facing the inlet and a bulbous central section which controls flow through an outlet orifice. Liquid bypasses the diaphragm through the rim. Other embodiments incorporate the regulator into a drip chamber and reduces the number of parts of the regulator to three members which can be snapped together.

Abstract: A flow regulator for use in an I.V. administration arrangement which establishes and maintains the rate of liquid flow regardless of changes in head which may occur. The regulator utilizes a diaphragm controlled orifice and a bypass with a valve to establish the flow rate. The diaphragm adjusts the effective orifice opening to maintain constant the flow selected by the valve.

Abstract: An optical device comprises a pair of contrastingly-colored sources of light, means for adjusting the brightness of the sources of light relative to each other, and a mixing element formed with a light-entrance portion to permit entrance into the mixing element of light emanating from the sources and with a display surface that communicates optically with the entrance portion and facilitates viewing of the light entering the mixing element through the entrance portion and propagated through the mixing element to the display surface, the light as displayed having a color that depends on the relative brightness of the sources. The mixing element has at least in part generally the shape of a cylinder formed with an axial bore so that the mixing element has an outer surface and an inner surface.