Abstract: A toilet overflow prevention device including an overflow valve assembly, a control valve and a water level sensor. The overflow valve assembly is configured to selectively permit a flow of water through the valve assembly from the tank to the bowl of an associated toilet. The water level sensor is configured to provide a control signal in response to detecting an above-normal water level within the bowl of the toilet. The control valve is configured to actuate the overflow valve assembly in response to a control signal from the water level sensor. Preferably, the overflow valve assembly is separate from the primary flush valve of the toilet and is located between the primary flush valve and the bowl of the toilet.

Abstract: A toilet overflow prevention device including an overflow valve assembly, a control valve and a water level sensor. The overflow valve assembly is configured to selectively permit a flow of water through the valve assembly from the tank to the bowl of an associated toilet. The water level sensor is configured to provide a control signal in response to detecting an above-normal water level within the bowl of the toilet. The control valve is configured to actuate the overflow valve assembly in response to a control signal from the water level sensor. Preferably, the overflow valve assembly is separate from the primary flush valve of the toilet and is located between the primary flush valve and the bowl of the toilet.

Abstract: A selectively controllable valve is arranged in a refrigeration circuit which interconnects the evaporator and the condenser and is controlled so that a pressure differential is built up across the valve. The valve is selectively opened to allow “batches” of working fluid to pass therethrough. In some embodiments, the working fluid which is allowed to pass through the valve, is heated in a chamber to increase the amount of pressure on the downstream side of the valve. This produces expanded pressurized working fluid which increases the pressure in the condenser and forces previously condensed and liquefied working fluid through a flow restricting transfer device into an evaporator. Condensation of the just heated gas in the condenser subsequently reduces the pressure on the downstream side of the valve and establishes conditions suitable for the passage of a further amount of gaseous working fluid while itself becoming liquid to be forced through the flow restricting transfer device.

Abstract: A selectively controllable valve is arranged in a refrigeration circuit which interconnects the evaporator and the condenser and is controlled so that a pressure differentials built up across the valve. The valve is selectively opened to allow “batches” of working fluid to pass therethrough. In some embodiments, the working fluid which is allowed to pass through the valve, is heated in a chamber to increase the amount of pressure on the downstream of the valve. This produces expanded pressure on the downstream side of the valve. This produces expanded pressurized working fluid which increases the pressure in the condenser and forces previously condensed and liquefied working fluid through a flow restricting transfer device into an evaporator.

Abstract: A selectively controllable valve is arranged in a refrigeration circuit which interconnects the evaporator and the condenser and is controlled so that a pressure differential is built up across the valve. The valve is selectively opened to allow “batches” of working fluid to pass therethrough. In some embodiments, the working fluid which is allowed to pass through the valve, is heated in a chamber to increase the amount of pressure on the downstream side of the valve. This produces expanded pressurized working fluid which increases the pressure in the condenser and forces previously condensed and liquefied working fluid through a flow restricting transfer device into an evaporator. Condensation of the just heated gas in the condenser subsequently reduces the pressure on the downstream side of the valve and establishes conditions suitable for the passage of a further amount of gaseous working fluid while itself becoming liquid to be forced through the flow restricting transfer device.

Abstract: A selectively controllable valve is arranged in a refrigeration circuit which interconnects the evaporator and the condenser and is controlled so that a pressure differential is built up across the valve. The valve is selectively opened to allow “batches” of working fluid to pass therethrough. In some embodiments, the working fluid which is allowed to pass through the valve, is heated in a chamber to increase the amount of pressure on the downstream side of the valve. This produces expanded pressurized working fluid which increases the pressure in the condenser and forces previously condensed and liquefied working fluid through a flow restricting transfer device into an evaporator. Condensation of the just heated gas in the condenser subsequently reduces the pressure on the downstream side of the valve and establishes conditions suitable for the passage of a further amount of gaseous working fluid while itself becoming liquid to be forced through the flow restricting transfer device.

Abstract: A water cooler is provided having a cabinet with water spigots and a door for accessing a refrigeration unit. The refrigeration unit includes a freezer compartment and may also include an icemaker. The cabinet interior contains a water reservoir which is supplied with water from a water bottle inverted in the top of the cabinet. Alternatively, the reservoir may be provided with an external source of water. In such case, an E-Coli sanitization module and a particulate water filter are provided. Cooling is effected with a compressor unit, condenser unit, an expansion valve and the refrigeration unit--all of which are interconnected with a closed loop coolant line. Predetermined segments of the coolant line are used to create freezing temperatures in the freezer compartment and non-freezing temperatures in a storage area, selected water lines and the reservoir. The condenser unit includes a condenser coil section which may be wrapped with ambient water for producing a supply of hot water.

Abstract: Magnetically controlled torque system or wrench for turning a fastener in a controlled manner until a variable and selectable maximum torque value is achieved whereupon the torque system is rendered inoperative, the maximum torque value being determined by the amount of force required to decouple a plunger from a magnetic field.

Abstract: A suspension member for a magnetic head and for use in a floppy disc drive mechanism and for supporting the head for contact with the surface of a disk. The suspension member has in it a group of openings in the form of Archimedes spirals. The suspension member is constructed to have the characteristic of having stability in that any deviation out of its plane is along a central axis normal to the surface of the member; a predetermined loading force producing a predetermined deflection. Associated with the member is a magnetic shield secured to the suspension member for shielding the magnetic head.

Abstract: An adjustable head positioner for a disc recorder of the type including a translatable carriage for moving a magnetic head relative to a recording disc is disclosed. The adjustable head positioner includes an elongated mounting arm or extender secured to the carriage and defining adjacent one end a transverse guide. A head support member includes a glide slidably disposed within the mounting arm guide and a magnetic head of the data recorder is carried by the head support member. A manual adjustment member is carried by the mounting arm and operably engages the head support member for adjusting the position of the head support member relative to the cross arm along the guide.

Abstract: A drive spindle assembly for a disc recorder, and particularly one using a rigid disc, having a direct-coupled spindle shaft arrangement which includes a disc-support platform mounted concentrically at one end of the spindle shaft and a DC motor attached to the other end of the spindle shaft, which spaced bearings supporting the shaft medially between the motor and the support platform. Preferably, the motor is of the flat, compact printed circuit-rotor type known as a "pancake" motor, and the disc-support platform preferably incorporates air-impelling vanes on one side and bleed orifices extending through it, so that air is drawn along the spindle assembly to cool it, and then impelled outwardly over both sides of the recording disc to help aerodynamically fly the recording heads on a thin film of air over the surface of the disc.

Abstract: An improved lead screw drive for a disc recorder of the type including a rigid frame having a pair of spaced, parallel members. The parallel members define coaxially aligned bores. A stepper motor having an outwardly-projecting integral lead screw output shaft is supported on the frame with the lead screw extending through one of the bores to a point closely adjacent the other bore. A rotatable support is disposed in the other bore and contacts the free end of the lead screw opposite the motor. The support includes a holder having a mounting shaft extending into the bore. A conical member is rotatedly supported by the holder and contacts a seat at the free end of the lead screw. The conical member is biased against the free end of the lead screw to thereby rotatably support same.

Abstract: A disc file structure includes a rigid support casting as a structural foundation which rotatably mounts a disc drive spindle assembly, including a shaft, a motor connected to the shaft at one end and an air pump impeller connected to the shaft at the other end. Housing enclosure portions attach to the support casting so that the resulting structure forms an integral sealed air chamber which defines a single air flow path for both cooling the assembly and for aerodynamically supporting the read/white heads.

Abstract: A drive follower assembly for a disc recorder of the type including a frame supporting a lead screw and a guide rod positioned in vertically spaced, parallel relation to the load screw is disclosed. The drive follower includes a one-piece carriage defining a longitudinal bore. A first, hollow, cylindrical, internally threaded follower is disposed within the bore and held against rotation and longitudinal movement relative to the body. A second, internally threaded adjustment member is loosely held within the bore and engaged by the lead screw. A coil spring is positioned between the follower member and the adjustment member to provide a snug fit on the lead screw and prevent decoupling. Provision is made for holding the adjustment member against rotation relative to the body yet permitting relative rotation for adjusting the initial preload of the spring.

Abstract: A data recorder/reproducer device for flexible magnetic disc media, having a door-like structure mounted on a supportive frame. The door structure receives a recording disc and is adapted to carry a recording head at one or both sides of the disc. The heads are articulated for selective control of movement toward or away from the disc, into or out of transducing relation and also for translational movement across the face of the disc, generally radially thereof. The device includes novel interlocking actuator means which prevent opening of the door or doors except when the heads, positioned by a translational drive means, are in a predetermined "home" or start position at the edge of the disc, thereby preventing the inadvertent erasure or other loss or destruction of the recorded information.