Abstract: Copolymers of acrylic or methacrylic materials of known type and reacted with novel, silicone-substituted acrylic and methacrylic compounds so as to produce an oxygen-permeable plastic material which is uniquely suitable for manufacturing novel corneal contact lenses. The silicone materials include high molecular weight polysiloxanylalkylesters of acrylic and methacrylic acids, made from acrylic or methacrylic ester silanes containing one or more highly substituted siloxanyl groups.One such siloxane substituent, pentamethyldisiloxane, is prepared by a novel method. Certain of the substituted silanes are prepared using a novel compound, tris(trimethylsiloxy) acetoxysilane.

Abstract: An article for displaying advertising or promotional materials. In the preferred form, the article comprises a mounting portion including a body of an elastomeric material having embedded therein a plurality of magnetic particles, thereby rendering the mounting portion capable of being adhered to a magnetically permeable substrate. The body has a rear surface portion adapted to be received over the substrate, an oppositely directed front surface portion, and an intermediate opaque sheet of a thermoplastic material bonded by a pressure-sensitive adhesive to said front surface portion of the body. A cover sheet closely overlies the intermediate sheet, and the intermediate sheet and the outer sheet have their respective peripheral edges bonded to each other by a fused, adhesiveless bond about at least a substantial portion of the periphery of the article.

Abstract: A prepared specialty frozen food product and method. The product is a frozen pizza with a filling-receiving crust portion made from a bread dough and a filling portion received within the crust. The method comprises preparing a bread dough product, subdividing the bread dough into individual dough elements, permitting the dough elements to rise, placing the dough elements within a forming pan having a flat, lower surface portion and an upwardly and outwardly tapering sidewall surface and pressing the dough elements within the pan so as to form the dough elements into flat sheets substantially co-extensive with the lower pan surface portion. Next, the dough sheets are allowed to rise, and are re-pressed so as to further exclude the dough radially. This causes the dough sheet to assume the contours of the pan bottom and sidewall and causes the crust to assume substantially uniform thickness in the bottom and sidewall areas of the pan.

Abstract: The invention relates to new monomers of a polysiloxanyl alkyl esters of acrylic and methacrylic acids and its copolymerization with alkyl esters of acrylic, methacrylic acids and/or itaconate esters to produce highly permeable contact lens material. The copolymer preferably includes a cross-linking agent and hydrophilic monomer. Contact lenses manufactured from the material are easily machined and polished into hard or semi-hard contact lenses having excellent dimensional stability.

Abstract: A bifocal contact lens having a principal, distant vision body portion made from a material having a first index of refraction, and a bifocal segment fused in place at least partially within the body and formed from a material having a second index of refraction higher than the first index. The lens has an arcuate lower bifocal segment surface lying generally parallel to the outer edge of the lens body and terminating at a pair of outer end portions which are spaced from each other by a first included angle. The upper bifocal segment surface has at least three elements including a first, radially inner partially circular surface element disposed generally inwardly of the lens, and terminating at a pair of inner end portions spaced from each other by a second included angle. The second and third upper bifocal segment surface elements extend respectively between the outer and inner end portions, with the included angles being less than 170.degree.

Abstract: A surgical wrapper is provided which minimizes the problems of raw edges, linting, and pinholes. A woven binding or tape is positioned about the outer edge of a woven material of predetermined size that has opposing major surfaces. The woven tape has a predetermined length and width, and includes a first segment which is juxtaposed to one of the major surfaces of the woven material along a marginal portion of the woven material. The tape is folded lengthwise about the outer edge of the woven material, and has a second segment which is juxtaposed to the outer major surface of the woven material along a marginal portion of the woven material. The first segment and second segment of the tape are secured to the woven material, as by means of thread.

Abstract: An electrode assembly for an electrode boiler employing electric current flow between spaced electrode assemblies immersed in an electrically conductive fluid in a boiler vessel for raising the temperature of the fluid includes an upright electrode member having an internal flow passage terminating in outlet slots in the outer peripheral surface of the bottom portion of the electrode member. The conductive fluid is pumped under pressure through the internal passage and exits through the slots into contact with fluid guide vanes on the electrode member and surrounding the bottom portion thereof. The guide vanes, which may be cupped-shaped or curved, are arranged in the path of the fluid exiting the outlet slots and create fluid circulation adjacent to outer peripheral surface of the electrode member to remove steam bubbles therefrom for the prevention of detrimental arcing.

Abstract: The present invention relates generally to security systems, and more particularly, to low cost, highly reliable mechanical-electronic locking units. The electronic security devices of the invention physically include a key assembly, a receptacle for the key in a door or other secured device, a receiver for decoding the signal sent from the key, and a novel electromechanical locking-and-unlocking component which is actuated electrically in response to an appropriate signal from the receiver.

Abstract: An air track device employing an air cushion principle to reduce ground pressure of a vehicle such as a tandem dual, utilizing an endless belt for operative connection to the tandem dual wheels and maintained at a predetermined internal pressure. The endless belt operates in connection with several embodiments of a tubular edge seal for sealing the interior of the chamber defined by the endless belt and for directing a peripheral air jet against a portion of the underside of the belt to create a proximity and lubricating effect.

Abstract: A frozen pizza product, particularly adapted for cooking and/or reheating in a microwave oven, and method of making such product. The pizza product of the invention includes a crust comprised of first and second crust elements with the first crust element being comprised of a baked cracker-type dough material having a moisture content of about 5% or less, with the second crust element being a baked bread dough type crust having a moisture content of about 20%-40%. The bread dough crust portion immediately overlies the cracker dough crust portion and, in use, the cracker crust is adapted to absorb excess moisture created during microwave cooking of the product. The method includes separately forming and, in some cases, baking the crust portions and then placing the two crust portions for overlying relation before adding a pizza sauce or other topping to the product.

Abstract: A frozen pizza and method. The pizza includes a frozen crust portion and a filling portion for receiving the pizza sauce or other filling. The crust includes a generally flat filling-receiving center section of predetermined thickness, height and density, and this center section is surrounded by an edge portion which is formed integrally with the center section portion. The edge portion is of increased height and decreased density with respect to the respective height and density of the center section portion. The edge portion has an inner sidewall which serves to confine the filling portion to the center section of the pizza product. The method includes the steps of permitting limited rise of the dough during crust formation, and then depressing or debossing the center section of the dough sheet to increase its density and reduce its height, while permitting the outer margin of the sheet to rise naturally to greater height and to assume a reduced density.

Abstract: A game apparatus having a projectile or thrown element and one or more receiver elements. The projectile element comprises a soft, preferably weighted nose portion received within the open end of a projectile body which is formed from a thin plastic material and which is of frustoconical shape. The body is hollow and open at the larger end thereof. The receiving element has means for accommodating the nose portion of the projectile, preferably, an open end, and is comprised of a frustoconical hollow body with an enlarged open end and having a size and taper generally corresponding to that of the projectile portion. In use, the projectile is thrown by one of the players and the other player or players attempt to catch it in the cone shaped receiver by directing the open end of the receiver towards the incoming projectile. The sufficient taper provides safety and the cone configuration affords stable flight to the projectile and presents a reception opening which is specially adapted to catch the projectile.

Abstract: An accessory adapted to be attached to the drain opening of a sink of a parts washer including an upright tubular housing, having a plurality of drain ports at a lower end thereof. A stopper is selectively movable in said housing from a first position above the drain ports to a second position below the ports by the application of force to a shaft operatively coupled thereto. In the first position of the stopper, drainage of fluid from the sink occurs through the drainage port and the drain outlet. In the second position, fluid is blocked from egress through the drain port and the drain opening of the sink and collects in the sink to a predetermined level whereby a series of overflow drain ports drain excess fluid to maintain a constant level of solvent. The shaft is coupled to a spring urging the stopper to the first position when a force is removed from the shaft.

Abstract: A simplified testing apparatus comprising a test board assembly and an information display sheet. The board includes correct and incorrect answer circuits which are completed by placing a signal manually positionable answer selector unit through a selected aperture in the board. Each aperture registers with an associated answer terminal. Inserting the answer selector, through the selected aperture energizes an answer indicator. The invention display sheet contains a multiple answer format, with apertures being provided in the answer sheet for association with the apertures in the test board. The answer sheet is arranged so as to disguise the fact that there is a prearranged correct/incorrect answer circuit contained in the board. In a preferred form, a portion of the answer sheet consists of a plurality of flaps, the reverse side of which contains information explanatory of the answers.

Abstract: A seal and sealed mechanism adapted to prevent dirt from entering portions of the seal cavity. The seal includes at least one annular primary seal ring of generally L-shaped cross-section and having a sealing surface formed on one side of the radial flange of the primary ring. An elastomeric secondary seal ring is also provided, with such ring being generally parallelogram-shape in cross-section. The inner diameter of the secondary ring fits snuggly in use over the outer diameter of the axial flange of the primary ring. A dirt excluder lip extends outwardly from one face of the secondary seal ring and covers the end portion of the radial flange of the primary ring to prevent foreign material from entering the cavity between the outer inclined surface of the secondary ring and the end surface of the radial flange of the primary ring. The excluder lip is effective in various axial positions of the seal. The seal may comprise a pair of identical primary and secondary rings in face to face relation.

Abstract: Electrical circuits, apparatus and methods for a variety of applications. A switching device subdivides an alternating current input signal into a plurality of lower voltage pulses by switching on and off in response to the characteristics, such as the voltage and current, of the input signal, and the pulses of current are intermittently passed to a capacitor in series with the device as the voltage on the input signal is positive-going. When the voltage becomes negative-going, the capacitor is discharged, usually with the pulses passing through the switch in the opposite direction. Work is done by energizing the series capacitor, or by energizing a capacitor in parallel with the switch, or by energizing an inductor in parallel or series relation to the switch, or a combination of the above. The inductor may be the primary winding of a transformer, or may create an electrical or magnetic field which is transduced into mechanical motion. The load may also be a resistive load.

Abstract: A safety mirror for cycles which includes a stem having a reduced diameter or breakaway portion lying adjacent the mounting portion of the stem and remote from the mirror head. The reduced diameter or breakaway portion preferably lies closely adjacent the upper surface of the locking nut.

Abstract: A molding press for insert molding of composite articles. The press has upper and lower plates movable between open and closed positions, and a die set positioned between the plates. The die set includes a core member with surfaces defining a portion of the molding cavity and another surface for receiving and supporting the insert. The core member also includes means defining a part of an area for receiving a charge of curable material and a part of a scrap forming cavity. A second mold member has surfaces defining a second portion of the article forming cavity and a second portion of said strap forming cavity, and the second mold member also includes means for engaging the insert and cooperating with it to form an axially movable flash barrier. The second mold part also has means cooperating with the insert to form a second, stationary flash barrier on an angularly related surface of the insert.

Abstract: A foundation structure for supporting a high rising light pole in which a plurality of vertically extending reinforcing rod assemblies are arranged in a circle with the tops bolted to a base plate on the bottom of the pole and extending downwardly into a vertical earth bore of relatively small diameter, each rod assembly comprising a bottom section of conventional carbon steel which is connected by a threaded coupling to a top section of high tensile strength heat treated steel, the assembly being set in the bore hole which is then filled with concrete.

Abstract: A multiple lip seal for oil and like fluids. The seal has an annular metal or like rigid casing portion of generally U-shaped cross section. A seal body is bonded to one flange of the U, and the body includes axially spaced apart, radially extending lips formed integrally with said body. In the preferred form, the flange about which the body is formed extends axially a distance at least as far as the extent of the multiple lip so that there is radial support for each of the lips, while the oppositely directed or other flange of the U-shaped casing remains free from rubber for mounting in a machine counterbore.The axially inner, intermediate and outer lips have different inside diameters in some cases and have the same diameters in other cases. Preferably, the body is thickest, and the radial extent of the lips is the shortest, at the axially inner portion of the seal.