Abstract: A golf putting stroke practice track contoured to follow the putter head during a putting stroke. The track includes a series of indicia which cooperate with indicia on the putter head adapted to indicate the rotational position of the putter head relative to the putting track. The rails of the track are L-shaped in cross section and are also adjustable with respect to each other in order that precise tolerances may be maintained between the putter head and the track rails so any divergence from a straight line by the putter head will result in the putter head contacting the track rails and providing an audible and tactual signal thereof.The legs and the spacer bars of the putting track are secured in rectangular connector blocks having at least two sockets; one for a leg and a second for a spacer bar. The legs and spacer bars are easily removed from the blocks to disassemble the putting track.

Abstract: An invalid walker suitable for use on level or unlevel surfaces or for going up and down stairs having a telescoping front leg assembly for positioning the front legs at various levels. Suitable locking means are provided to maintain the front legs at the preselected position.

Abstract: A modular solar collector system formed of interconnectible manifold sections and a plurality of tubular collectors connected between the manifold sections having fittings and connecting means for securing the tubular collectors and forming a liquid tight seal.

Abstract: One of a pair of elongate rigid handle members is carried along either lateral edge of an elongate flexible sheet. A generally cylindrical shape is imparted to the flexible sheet by a laminatively affixed reinforcing strap, which extends between the handle members. A handle structure is formed in response to engagement means detachably connecting the handle members in longitudinal juxtaposition. The apparatus is supported by angularly spaced legs extending from the sheet.

Abstract: A solar energy collector formed of an inclined corrugated radiant heat absorbing panel for absorbing direct and reflected solar radiation having a plurality of air passageways formed by the convolutions of the corrugations, an air intake manifold and an air exhaust manifold connected to the passageways in said panel, an inflatable air-tight bag surrounding the collector assembly and a source of pressurized air connected to said air inlet manifold for pressurizing the system and for forcing air through the heat absorbing panel for heating the same.

Abstract: A shoe having a variable opening and tongue utilizing an adjustable and flexible closure assembly which includes separable fastening members having coacting, flexible gripping elements, such as hook and loop Velcro type fastening means, a fastener strap, and an anchor means with an opening to engage the free end of the fastener strap permitting the wearer to easily adjust and secure the closure assembly to the precise tautness desired, using only one hand.

Abstract: A shoe having segmented upper sections, each section including a closure in combination with at least one adjustable and flexible closure assembly including an anchor means, fastener strap and multi-position flexible separable fastening means which permit the wearer, using only one hand, to independently control and maintain a precise tautness of the shoe.

Abstract: A shoe having a heel restraint secured by an adjustable and flexible closure assembly utilizing separable fastening members having coacting, flexible gripping elements, such as hook and loop fastening means and operating separately from the fastening means to fasten the shoe. The closure assembly includes an anchor strap having an opening adapted to receive a fastener strap which makes it easy to adjust for and maintain the precise tension desired at the wearer's heel by providing a sturdy, adjustable heel restraint and stabilizer to independently control the tension on the heel section of the shoe.

Abstract: Disclosed is a monk style shoe having an adjustable and flexible closure assembly utilizing separable fastening members having separable fastening members having coacting, flexible gripping elements, such as hook and loop Velcro type fastening means, including a fastener strap attached to one side of the shoe and one of the shoe quarters on the opposite side of the shoe elongated and having an opening through which the fastener strap passes. This improvement permits the wearer, using only one hand, to easily pull the shoe uppers simultaneously to the precise desired tautness and fasten the shoe.

Abstract: A shoe having an adjustable and flexible closure assembly utilizing separable fastening members having coacting, flexible gripping elements, such as hook and loop Velcro type fastening means in combination with an elastic instep-gore or elastic side-gores. The closure assembly includes an anchor strap having an opening to engage a fastener strap permitting the wearer to easily pull the uppers of the shoe inwardly and simultaneously to the precise desired tautness and fasten the shoe, using only one hand.

Abstract: A digital alarm system for monitoring a variable process signal utilizing a variable, digitally controlled alarm hysteresis capability. The system includes a means for establishing a preselected count level at which an alarm condition occurs. The preselected count level may be established in a high alarm or a low alarm state depending upon the process signal being monitored. Digital signals representative of the process variable are compared with the preset count level signals and upon a coincidence, an output signal is generated to provide alarm signals and also to reset the preselected count level signal to a second preselected count at a level which is a wide variation from the original preselected level so a relatively large change in the process signal occurs before the system is reset to its original alarm condition.

Abstract: A gasoline and petroleum fuel supplement formed of a combination of ingredients including a lower alkanol selected from the group consisting of methyl alcohol, ethyl alcohol, n-propyl alcohol, i-propyl alcohol and mixtures thereof and an alkali metal hydroxide selected from the group consisting of sodium hydroxide, potassium hydroxide, lithium hydroxide and mixtures thereof. These ingredients may be added in various ratios to gasoline and/or to water, preferably distilled or deionized water, for use as fuel supplements for internal combustion engines.

Abstract: A target alignment system for use with a golf club for determining the precise clubface angle relative to a target path in the direction which a ball is intended to travel. The system provides an indication of the clubface angle during address of the club behind the ball and an indication of the clubface angle at the moment of impact when the ball is struck. The system includes a light source and optics for projecting a light beam, a reflecting surface of the golf club for reflecting the light beam to an array of photodetectors, and a display which is energized in accordance with the measured clubface angle.

Abstract: A hydro-electric power plant for use in any location having flowing streams of water including a diversion dam which extends part way into the flowing stream to divert water to a spillway which includes a plurality of water wheels driven by the water flow to operate turbine-generators for the generation of electricity.

Abstract: A method for accomplishing peak limiting of bipolar signal voltages wherein the signal is processed as a running series of half waves, each of which is individually examined and dynamically controlled in amplitude. A serially connected multiple section delay line technique is utilized to derive control signals for operating the amplitude control function. Illustrative apparatus for carrying out the method includes a thresholded light-dependent resistive attenuator controlled in part by a polarity sensitive zero-crossing detector. Also included are a number of serially connected delay stages, the output signals of which are polarity-sensed to form the bipolar signal being processed into the desired half wave sections, and are amplitude-sensed to provide the required amplitude control information.

Abstract: A gasoline and petroleum fuel supplement formed of a combination of ingredients including methyl alcohol, xylene, ethyl alcohol, and at least one alkali metal hydroxide. These ingredients may be added in various ratios to gasoline and/or to treated water for use as fuel supplement in an internal combustion engine.

Abstract: A shoe having an opening with an adjustable instep gore assembly including a strap having a hook and loop Velcro type closure which permits the wearer to pull both sides of the shoe, simultaneously, to the desired tautness before fastening.

Abstract: An implantable tooth for humans is made by first extracting the natural tooth and producing therefrom an exact replica of at least the root portion of the tooth, formed of porous metal or ceramic with or without the application of a surface coating of dental porcelain or the like to the replica. It is then permanently implanted in the natural tooth socket with or without a stabilizing means anchored to the underlying alveolar bone. It is contemplated that the method is also applicable to a complete tooth with the porosity localized in the root area. More usually, a porcelain cap or the like would be used to top the root prosthesis.

Abstract: An apparatus and method for graphic conversion for electronic data processing wherein an image is converted to an electrical analog signal which is converted to digital data representing discrete segments of the image containing color value data. The digital data is converted to an analog signal by a curve fitting technique responsive to adjacent discrete segments and the analog signal drives a visual display means which recreates the original image. Means are provided to store and/or modify the digital data to effect predetermined changes in the recreated images.