Abstract: A solar heating system for heating fluid enclosed in a waterproof, heatable flexible bag held in a support which can be a cavity in the earth, insulated from ambient temperatures by alternate layers of transparent flexible gas bags and liquid bags disposed above the heatable bag. An upper weight bag filled with liquid applies weight down against the heatable bag to apply pressure on it to raise the boiling point of the liquid therein. A heat exchanger receives hot fluid from the heatable bag to produce hot gas such as hot freon under pressure to operate a turbine. The turbine can deliver electricity for electrical power for producing hydrogen and oxygen gases, for heating and for other uses including electrical power for municipalities.

Abstract: The fish tank cleaning system of this invention comprises a water pump using power of water flowing at a sink to pull by venturi principle water through a hose from an aquarium to empty the aquarium or to cooperate with tools used at the aquarium for cleaning the stones on the bottom thereof and for cleaning the walls thereof, the stone-cleaning tool comprising a housing from which water is pulled, the lower end of the housing being adapted to engage rocks on the aquarium bottom, the housing having rock-stirring means mounted thereon, the wall-cleaning being done with a squeegee having a special water and debris suction opening for delivering water to a hose.

Abstract: An ice cream product mixer of the type having a housing with an open forward side to receive fragile ice cream product serving cups, a mixing head rotating about a vertical axis and having blades each of which generally incline with respect to the axis. Each blade has a lower end section having an undersurface with a lowermost area which is generally disposed substantially closer to a horizontal plane than is the inclination of the undersurface of parts of each blade which are closer to the axis than the lowermost area, so as to cooperate with low speeds for reducing the danger of rupturing the bottom of a fragile cardboard cup and of ice cream spillage therethrough. With the speed low, the use of high driving power and high blade pitch makes possible the rapid mixing of hard ingredients into stiff ice cream in the cups, the outer surfaces of the blades being blunt to reduce danger of puncturing the sides of the fragile cups.

Abstract: A lifter-carrier for lifting and carrying cylindrical objects such as hay bales on two booms adapted to slide under the curved sides of at least one cylindrical object. The booms are raisable to a position above the ground to carry the objects on wheels under the booms and under a towing assembly which can be a tractor or truck.

Abstract: A bed sheet combination comprising under and upper sheets attached together by an elongated interlocking means assembly extending along foot portions of the sheets, the sides of the sheets being free of connecting means for speed of interconnecting of the under and upper sheets, both sheets having pocketed foot-ends, the pockets of the upper sheet being for protecting the elongated interlocking means from stress from sheet-tugging, the pockets of the upper sheet having elastic edges to provide pockets which expand for speedy attachment to a mattress.

Abstract: A seam lock spreader formed by providing a spreader wheel carrier adjustably attachable to the spindle of a conventional combination rotary machine and attaching also to the machine a pair of rollers especially shaped for driving sheet metal while providing a space for receiving its seam. The rollers are of a special size for fitting the combination rotary machine.

Abstract: A grease ram having an elongated body having a hole extending therethrough, a force-receiving device at a rear end of the body which can be a hammer below receiving member, a plunger attached to and extending forwardly from the force-receiving device and having portions snugly fitting in said hole to force grease forwardly therethrough, a grease insert port extending through said body, a grease insert valve in the port for filling the body with grease and retaining the grease in the body during ramming, a receiving unit attached to the forward end of the body for receiving a target grease fitting to be rammed, the receiving unit having an open forward end receiving the target grease fitting at times when the fitting is to be greased, the receiving unit being adapted to grip around the larger head of a grease fitting for holding the ram to the grease fitting, a target grease fitting protector attached to the body in an adjustable manner for holding the body during ramming such that the forward end of the prote

Abstract: A duct-shaping machine having a pair of major-axis duct-shaping modules for elongating the cross section of a cylindrical duct as they are forced apart, a minor-axis compaction assembly having first and second compactors pressing inwardly towards the center line between the modules to flatten the sides of the duct.

Abstract: An air conditioner system for bicycles and other vehicles, the system using a wheel of the vehicle as a source of power, air flow through an ice chamber being useable in the system as an optional further coolant.

Abstract: A tennis racquet having at least mostly non-interwoven strings, a plurality of ball grips or string-protectors, each ball grip having an opening therethrough receiving a respective main string, retaining units holding each of the grips in a position along its main string, the grips being preferably multiple row-groups of grip-tubes each row-group being held together as a unit and called a spinner, the spinners being disposed spaced along the mains.

Abstract: A garden row making tool comprising an elongated handle, a shovel on one side of said handle, a guide on the opposite side of said handle, the guide being adapted to follow a previously made furrow at a time when the shovel is making a new furrow parallel to the furrow the guide is being caused to follow, a support assembly disposed between and interconnecting the shovel and the guide and attached to the handle, the support assembly being extendable for different row spacings, a depth regulating shoe being attached to and disposed behind the shovel, the guide having two parallel planar sides at right angles to the length of the support assembly.

Abstract: A trailer steering hitch system for towing and trailer vehicles in which a tongue extends between the vehicles and in which a cable system extends along the tongue from a stationary elliptical pulley disposed beneath the towing vehicle to a rotating elliptical pulley beneath the trailer, the trailer having the wheels of its forward wheel system mounted for turning in accordance with the rotational position of the trailer elliptical pulley, the tongue being attached to the trailer in a manner for extending straight-forwardly therefrom at all times, inclination of the truck with respect to the tongue as the truck turns causing a cable movement bringing corresponding rotation of the trailer elliptical pulley for turning the wheels of the forward trailer wheel system toward that side of the trailer in which the towing vehicle is turning.

Abstract: An intravenous catheter and anchoring set comprising a catheter assembly having an I.V. catheter having one end inserted into the limb of a patient and a flexible tube attached to the other end of the catheter, a flexible anchor base, the base having notches therein forming adjustable bands extendible around a limb, attachment means attaching the bands together and skin-anchor adhesive means on the inner side of the base and capable of holding the base to the skin while the bands are being adjustably secured in place.

Abstract: An aeration fan mounting system having a wall adapter and a fan housing with aligned interior surfaces and held in end-to-end alignment with each other by support bracket assemblies having insertion rings extending outwardly from both the wall adapter and fan housing and also having brackets for holding the insertion rings adjacent each other.

Abstract: A welding helmet comprising a face protective hood, a head-band, the hood pivoting on the head-band upwardly and downwardly, and a stop assembly for stopping the hood from pivoting downwardly beyond a position in which its viewing opening is in a position for sight. A dark plate carrying visor is located in front of the hood and mounted on the hood for swinging upwardly and downwardly, the visor having a wide swinging arc so as to stay closer to the hood when raised. The stop assembly has two portions attached- one to the hood and one to the head-band through a hard hat, or more directly to the head-band when a hard hat is not used, the chain strap being resiliently and adjustably held in position, and the top of the hood being corrugated for stiffness.

Abstract: An aeration fan mounting system having a wall adapter and a fan housing with aligned interior surfaces and held in end-to-end alignment with each other by support bracket assemblies having insertion rings extending outwardly from both the wall adapter and fan housing and also having brackets for holding the insertion rings adjacent each other.

Abstract: A dart target system comprising a first target movably mounted on a frame for rotation about a first axis, whereby when a greater number of darts are stuck in the target on one side of the axis than the other, then that one side will be below the other side, indicating victory for the player throwing toward the one side. An electrical system forming a part of the dart target system and delivering a light or other sensible signal of one nature when the victory is achieved by a person throwing on one side of the target and of a different nature when a victory is achieved by a person throwing at the opposite side of the target.

Abstract: A card-holding teaching device especially useful for blind children comprising a stiff body having at least one elongated piece of flexible material extending thereacross, the material having on one side tiny, soft, flexible projections which face the stiff body so that a card with teaching symbols thereon can be easily inserted between the material piece and the body because of the easy yielding of the projections even though they hold the flexible piece away from the body sufficiently for easy insertion by a blind student.