Abstract: There is disclosed a method for the treatment of confined bodies of water such as a swimming pool to remove scale deposits from the surfaces of the vessel containing the water. The water is acidified with a mixture of hydrochloric acid, sulfamic acid and sodium bisulfate to eliminate its total alkalinity, as determined by a standard neutralization test. The water is continuously or repeatedly monitored for total alkalinity following the initial addition of acid, to insure that sufficient acid has been added. The acidified water has a tendency to gain total alkalinity as the scale deposits are removed during the treatment, and monitoring detects this change, permitting correction by addition of acid. After the treatment with the acid, which can last from several hours to several days, any excess treatment acid is neutralized by the addition of a neutralizing agent which is preferably magnesium oxide or magnesium hydroxide.

Abstract: There is disclosed a releasable closure for a container which is particularly suitable for plastic bags. The closure is formed by a pair of opposed bands of static cling vinyl film, preferably polyvinyl chloride, which extend along the mouth of the container and which are permanently secured thereto. The bands of static cling vinyl extend inwardly, into the container where they form internal flaps that are coextensive the length of the mouth of the container, thereby forming internal flaps within the bag. These internal flaps provide the pressure resistant capability of the resealable closure, permitting it to retain its fluid-tight characteristic against internal pressures.

Abstract: There is disclosed a fishing pole holder having a tubular sleeve to receive the butt end of a fishing pole and a mounting bracket secured to the sleeve with an adjustable directional plate. The sleeve has a stud with at least one flatted surface which is received in a central, multi-flatted aperture of a mounting clamp, thereby permitting the clamp to be indexed to any of a plurality of orientations on the mounting stud. The directional block is removably secured to the mounting block which is one member of a clamp formed of two blocks. Each of the blocks of the clamp has a central V-groove and these V-grooves are opposed to define a clamp passage therebetween.

Abstract: A wall bed is disclosed employing a linkage assembly which moves the wall bed outwardly from a wall or cabinet in a fashion so that the head end of the bed will not be in the cavity and the level of the mattress will be at a height which approximately corresponds to the height of conventional beds. Three counter-balancing spring assemblies are disclosed. One employs an angle member which connects extension springs to the bed base so that they are contained within a compact structure which is received within the cavity. The second employs a linkage assembly having short and long links pivotably connected to each other by their ends, with an extension spring connected to the short link and a mounting frame. The third employs a linkage assembly with extension springs that neutralize the counter-balancing force when the wall bed is open to eliminate floating. A headboard is also provided which may be tilted rearwardly or positioned at a right angle to the sleeping surface.

Abstract: There is disclosed a precharged disposable syringe consisting of a housing having a central aperture through which extends an actuator button to contact an internal piston mounted over a medication ampoule contained in the housing. The ampoule includes a dependent hypodermic needle and the ampoule is slightively mounted in the housing for movement between a recessed position where it is totally contained and supported within the housing and an extended position with the dependent needle projecting out of the housing. An actuator spring is located in the housing and is compressed and biased to move the piston and the ampoule into the projected position. Medication is discharged by the mechanically coupled actuator button and piston. The actuator button and piston is locked for safety with a dent and plastic ring.

Abstract: There is disclosed a ball having a foraminous outer shell with an inner membrane which forms an interior closure within the outer shell and with a timer and a release mechanism operative to open the inner membrane and release its contents after the time on the timer expires. The contents spill through the foraminous outer shell, wetting the player who is handling or catching the ball at the moment of release. The timer is activated and the ball is used in a game in which it is tossed between participants who seek to avoid becoming wet when the timer releases the water from the interior closure of the ball.

Abstract: There is disclosed a connector for attachment of flexible plastic tubing which is most compatible with filament reinforced tubing which resists elastic expansion. The connector has a central radial flange with opposite cylindrical ends which provide mandrels to receive adjacent ends of tubing. A cylindrical cage surrounds the cylindrical ends and supports chuck members. A pair of collet members are provided which slide over the tubing and the chuck members, compressing the chuck members radially inwardly without axial movement of the chuck members relative to the tubing. This deflects the chuck members into the wall of the tubing, thereby locking the tubing securely onto the mandrel. The collet member has an internal annular groove on its inside wall which receives an outer edge of the chuck members, thereby serving as a detent or interlock to resist the retraction of the collet member once it is moved into final position.

Abstract: Disclosed is a braking system for a spool of coiled wire used in a welding machine. The braking system includes a spindle mounted to the machine to rotate freely. The spindle has a braking surface and it has mounted to it an annular brake member having teeth around its circumference and a braking surface which engages the braking surface on the spindle. The two braking surfaces frictionally coupled the spindle and brake member together so they rotate as a unit. The braking surfaces slide relative to each other through a predetermined rotational distance when the rotation of the brake member is stopped abruptly. A solenoid actuated pawl engages one of the teeth of the brake member to stop this member, allowing the spindle to rotate through a limited rotational distance of, for example, a maximium of about twenty degrees of rotation.

Abstract: There is disclosed an infant sling which is formed as a generally U-shaped band of flexible sheet material having its upper ends attached to a support. The support can be a vest worn by an adult to provide an infant carrier, or can be a support ring which is suspended from a supporting structure to provide an infant swing. The support ring has substantially the same diameter as the lateral dimensions of the infant. The support ring protects the infant's head, and supports the sides of the sling vertically and substantially parallel to each other, totally enclosing the sides of the infant. The sling also includes a back support band which extends vertically from the support ring to a joined attachment with the fabric band of the sling at its lower rear edges, and has front belting which extends about the waist or diagonally across the chest and lower abdomen of the infant. The sling has a pair of leg openings at its lower end, or bight, and the sides have opposite openings for the arms of the infant.

Abstract: There is disclosed a sport shoe that is adaptable for multiple competitive events. Specifically, the sport shoe is useful for both cycling and running without compromising either competition. The shoe uses clipless pedals which, heretofore, have only been useful with a cleat that is permanently attached to the cyclist's shoes. The shoes can be quickly mounted to the clipless pedal and the wearer can thus compete in running and cycling events without changing footwear. The shoe of the invention has a composite sole with an outer sole, an intermediate sole and a cushioning layer therebetween. The composite sole has a plurality of apertures which are positioned on a preselected array and which receive a plurality of detent members, preferably in the form of upright posts which are permanently affixed to a pedal of a cycle. The upright posts have detent members which snap into the composite sole, thereby firmly securing the shoe to the pedal of a bicycle without any clips or attachment cleats.

Abstract: There is disclosed a fishing lure having a fish attractant body which is formed of a water soluble polymer having a slow dissolution rate. The polymer contains a fish scent attractant. The fish scent attractant can be encapsulated within the polymer, e.g., fish or blood meal can be included in the polymer so that it will be slowly dispensed into the water as the polymer dissolves. The preferred polymer is polyvinyl alcohol having a preselected degree of hydrolysis of its ester groups to achieve the desired water solubility rate, and optionally plasticized with glycerol. The attractant can be a sheet which has a plurality of parallel and coextensive slits to provide parallel strips that depend from an unslit portion thereby permitting the sheet material to be wrapped about a lure body and secured in place so that the parallel strips extend rearwardly from the body, permitting them to undulate in the water as the lure is pulled through the water simulating the swimming movements of a small fish.

Abstract: There is disclosed an easily releasable fastener which is specifically designed for high torque applications. The fastener comprises a slotted nut having at least two axial slots, and preferably no more than one of the slots extends completely through the body of the fastener. The slots divide the fastener into at least two segments which, in the preferred embodiment are retained together by the residual portions of the incomplete slots. Each of the segments has a flat surface for torque transmission and the assembly of segments is surrounded by a thin retainer band seated in an annular groove about the body of the fastener. The fastener is mounted within a retaining ring which has internal flats that coact with the flatted surfaces of the individual segments. The retaining ring has external wrenching flats to permit the application of the fastener to a standard bolt.

Abstract: There is disclosed a thin plate optical element of the Fresnel type having refracting and magnifying properties. One face of the thin plate element is formed with a plurality of straight line, parallel and evenly spaced triangular prisms and the opposite face of the element has a plurality of coaxial, arcuate prisms of varied face angles in a progressive order of decreasing face angles extending outwardly from the center of the optical element. The arcuate prisms can be a single, continuous helical prism with a continuously variable and decreasing face angle along its length from the center of the element or, preferably, can be a plurality of concentric circular prisms of incrementally increasing diameter and decreasing face angles. One face of the optical element thus functions as a magnification lens while the other face of the optical element functions to refract the stereoscopic images the necessary degree for fusing of these images into a single three dimensional illusion.

Abstract: A case for eyeglasses and for contact lenses is formed as a shell of substantially rigid plastic with a cover member and a base member which are hinged together along a longitudinal side edge. The case also has a partition that is also hinged and is formed of semi-flexible plastic or is a laminate of a formed plastic foam member and a plate member of substantially rigid plastic.

Abstract: There is disclosed a tool for the removal of locking collars of the frangible fasteners used in the aerospace industry, particularly for removal of fasteners installed in close quarters such in a deep channel where conventional tools cannot grip the collar. The tool has a collet-type chuck to grasp the collar of the fastener and has a lead screw to lock the collet chuck about the collar and permit removal of the collar. For this purpose, the collet chuck has a cylindrical neck which is received within a sleeve. The lead screw is received in the opposite end of the collet sleeve and is threadably engaged in the internally threaded bore of the collet chuck member, preferably with left hand threads, and has a head with wrenching flats. The lead screw has a central axial through bore which receives a key member which is used to immobilize the stud or bolt of the fastener system. A disk member is slidably received within the collet sleeve to eject removed collars from the collet chuck member.

Abstract: The invention is a wrenching tool useful for loosening the locking collars of frangible fasteners which are commonly used in the aerospace industry. The tool has a socket head with an end of reduced thickness to provide a land on which is pivotally received the jaw end of a handle. The through socket of the head is traversed by the vertical shoulder between the head and its reduced thickness end, thereby providing an open area to the socket. The jaw end of the handle projects into this open area to grasp items within the socket, such as the narrow wall of the locking collar of a frangible fastener. In this application, the jaw end of the handle can be placed flush against the surface of the workpiece, thereby firmly grasping even very narrow locking collars. The wrenching tool can also be used to apply a frangible fastener by inverting the tool and grasping the hex collar in its socket.

Abstract: There is disclosed an insect trapping mat for domestic animals. The mat has a predetermined shape and is formed from a top layer, a bottom layer, and an intermediate layer. The top layer is insect pervious to allow insects such as fleas and ticks to travel into the intermediate layer. A wet or slow drying adhesive is located either on the bottom surface of the top layer, on the top surface of the bottom layer, or in the intermediate layer. The adhesive may be mixed with pheromones or bait to attract insects or fleas. Once the insects have touched the adhesive they will not be able to release themselves from it.

Abstract: There is disclosed a container for liquids that includes interchangeable dispensing tops such as: a nipple top, a multiple hole protrusion top, a drinking straw top, and a drinking cup top. The bottle is a combination of an outer shell which has windows along its length, a rigid, cylindrical, inner container having a closed bottom, an open top and a removable cap. The cap supports one of the aforementioned dispensing means on its upper surface and is removably secured to both the inner container and outer shell.

Abstract: A corrosion inhibited sodium and calcium chloride composition preferably in granular form, which is uniformly coated with a minute to minor quantity of an inhibitor comprising chiefly superphosphate and a minor amount of magnesium oxide. There is also disclosed a method for inhibiting corrosion of sodium and calcium chloride which comprises supplying to the metal surface which is exposed to corrosive attack by sodium and calcium chloride, a minute quantity of an inhibitor comprising chiefly superphosphate and a minor amount of magnesium oxide. The magnesium oxide functions to cement the inhibitor as a tenacious coating on the salt granules, and also to enhance the effectiveness of the phosphate corrosion inhibition.