Abstract: An evacuated solar collector receives impinging solar radiation of varying intensity and converts the same into useful thermal energy in a selected working range of the ambience. The collector has absorber and window surfaces selectively coated for rendering the conversion of solar radiation to useful thermal energy more efficient by increasing absorption, reducing reradiation, and in certain cases may include at least one electrically conductive coating on the solar window which is capable of carrying an electric current, for suppressing snow accumulation thereon.

Abstract: A reflector useful in dental surgical lighting systems has been developed, which reflector is derived from at least one base ellipsoid surface which has been divided into sections, each section being rotated outward so as to provide the cumulative effect of several ellipsoidal segments to produce a beam pattern of desired width.

Abstract: The present invention provides a surgical cutting instrument having a blade portion and cutting edge therefor with electric input elements located near the cutting edge for cutting the tissue and cauterizing the surfaces of the incision, thereby allowing surgery to be more rapidly performed. This is accomplished in accordance with the illustrated embodiments of this invention by providing electrodes of opposed polarity, applied to the blade, near the cutting edge. With an electrical potential applied, no current will flow between the electrodes and no heat is produced unless the electrode gap is bridged by a conducting medium such as a high conductivity physiological fluid. Heat is then generated by electric discharge below an arcing threshold in all areas where the blade is in contact with moist tissue. Little electric discharge or heat occurs elsewhere. Moreover, if movement of the blade is halted, heat generation will substantially diminish as the cut tissue becomes dry as a result of cauterization.

Abstract: A surgical cutting instrument includes an electrically heated cutting edge and a power supply system for maintaining the cutting edge at a constant high temperature for sterilizing the blade, cutting tissue and cauterizing the incised tissue to reduce hemorrhage from the cut surfaces of the tissues (hemostasis).

Abstract: A surgical cutting instrument includes an electrically heated cutting edge and a power supply system for maintaining the cutting edge at a constant high temperature for sterilizing the blade, cutting tissue and cauterizing the incised tissue to reduce hemorage from the cut surfaces of the tissues (hemostasis).

Abstract: A first molten glass of one composition is caused to flow downwardly along converging flow paths of a forming member while simultaneously at least one other molten glass of a different composition is flown downwardly along outer surface portions of the first glass such that said glasses are in molten contact with one another during their downward travel and are then continuously formed into a composite or laminated glass sheet. The molten glasses are distributed to the forming member in such a manner as to provide substantially uniform thickness of the glass layers across the newly formed sheet, and various viscosity, glass flow rates and proportionate layer thicknesses may be obtained by varying the degree of tilt of the forming member.

Abstract: Frit material for sealing glass parts is dispensed to a sealing edge of one of such parts at a uniform desired rate through the utilization of controllably operated piston and cylinder mechanism providing constant volume displacement during the dispensing of such frit material.

Abstract: A spin plate, rotatable about a central vertical axis, is positioned axially below the discharge orifice of a glass feeder to initially receive a charge of glass thereon, and the spin plate is rotated about said central axis to spin out said charge into a disc-shaped parison and the spin plate is indexed downwardly so as to receive a forming mold thereabove. The spun parison is particularly adapted to forming articles from low viscosity glasses utilizing techniques heretofore not readily available to such glasses including spinning, vacuum forming, blowing, pressing and blanking.

Abstract: A solar energy collector structure has been provided which comprises a plurality of at least partially evacuated tubular members arranged in a group lying in parallel axial alignment. Each tubular member is joined to a next adjacent tubular member of the group to form a self supporting structure having at least one enclosed flow channel defined by intersticies of tubular members so joined. An absorber surface, disposed in communication with the flow channel, intercepts and absorbs solar energy, which is carried by a working fluid in the heat exchange relation with the absorber surface.

Abstract: In a color TV bulb formed with a panel, a peripheral panel skirt integral therewith, a funnel portion adapted to mate therewith, a frame and aperture mask adapted to be mounted in said frame and secured in spaced relation with the panel; a supporting structure for the aperture mask and frame including peripherially located outwardly extending spring lugs and spring clips attached to the frame respectively operative for xy orientation and Q spacing of the aperture mask. The panel skirt is formed with a selected number of V grooves located each for receiving a corresponding one of the spring lugs and a ledge face spaced away from the inside surface of the panel to cooperatively engage with and support the spring clips. A forward surface of the funnel engages the spring clips to urge same against the ledge face such that the xy orientation and Q spacing of the aperture mask are fixed relative to the panel.

Abstract: In an apparatus for forming multiple ply sheet glass directly from separate sources of molten vitreous material while maintaining such separate sources free from exposure to detrimental gaseous media during the formation of such sheet glass; metering means in communication with each of said separate sources of vitreous material, a pair of opposed surface portions thereof defining a central longitudinal delivery passage for delivering molten glass from one source of vitreous material, and a pair of opposed channels for delivering molten glass from the other source, insert means adapted to mate with the metering means in said delivery passage for reducing the flow of molten glass therethrough to provide sheet glass having a width narrower than the width of said delivery passage.

Abstract: A solar energy collector structure has been provided which comprises a plurality of at least partially evacuated tubular members arranged in a group and closely packed in parallel axial alignment. The tubular members are joined together to form a tube sheet. A unitary insulating support structure having a recess therein is adapted to receive the tube sheet in tandem therewith, the tube sheet being sealed within the recess of the support structure along respective opposite lateral margins thereof to form a flow channel therebetween. The support structure has headers integrally formed therewith and includes means for providing flow communication with the flow channel. An absorber, disposed behind the tube sheet, in communication with the flow channel, intercepts and absorbs solar energy, which by heat transfer is carried off by a working fluid in heat exchange relation with the absorber.

Abstract: In an evacuated solar collector of the type having an inner absorber member and an outer tubular envelope surrounding the absorber, the space surrounding the absorber being evacuated, the improvement comprising an expansion joint slidably coupling the absorber and the outer tubular member, including first and second sleevable portions being respectively formed to the absorber and the outer tubular member. The sleevable portions are sleeved, one within the other, concentrically forming an angular space therebetween, and a resilient member, disposed in the annular space, slidably supports the absorber member within the outer tubular member in a generally concentric or coaxial manner for allowing the expansion and contraction of the absorber relative to the outer tubular member.