Abstract: To convert a conventional nonpulsating air/water mixer for a therapy tub, swimming pool, spa or the like to a pulsating mixer, an inexpensive pulsator fitting is used to replace the central eyeball portion of the mixer's outlet and mounting fitting. The pulsator fitting has at least one cross bar positioned to block the mixer's aerated water jet, and a small cylindrical rotor journaled on the cross bar. The rotor extends from the cross bar coaxially into the mixer body's outlet passage in the path of the aerated jet. The jet strikes a central portion of the upstream rotor end, travels through an angulated rotor passage, and exits the downstream rotor end at an angle relative to the rotor axis and at a point spaced apart from it, causing the rotor to spin. As the rotor spins, the exiting aerated jet rotates and is repetitively and intermittently blocked by the cross bar, thereby pulsing the jet.

Abstract: A motor generator set that is used to provide clean, noise-free power to a load, such as a computer, is upgraded to a complete uninterruptible power supply by the addition of a logic controlled, battery powered inverter that is readily connected in the main power supply line to the motor generator. The emergency power inverter operates only when normal utility power fails, and employs the ability of the motor generator set to handle brief power outages to power the load for the brief time needed to decouple the main line power supply and couple the inverter to the motor generator. An oscillator that clocks trigger pulses for the inverter tracks motor voltage frequency and phase until power is supplied to the motor from the standby inverter. Switching to the emergency power inverter is accomplished by detecting both reverse power and zero current.

Abstract: A substrate, such as a roofing substrate, is protected by coating it with a low density polyurethane foam which is then coated with an essentially non-porous, dense, elastomeric polyurethane layer. The layer is formed by spraying a volatile-free spray of polyurethane precursor reactants onto the surface of the foam and rapidly reacting the precursors.

Abstract: A kit for lining the inside of the bed of a pickup truck is made of plywood liner sections, including side panel liner sheets that are outwardly bowed and captured between the truck bed floor and an inwardly extending shoulder of the upper rail of the side panel. The side panel liner sheets are held in outwardly bowed position to more closely conform to the outward curvature of the truck side panels by wheel well liner boxes that cover the wheel wells. The boxes are forced outwardly against intermediate sections of the side panel liner sheets and fixed to the wheel wells. Tail box liner sections, also of plywood, cover the truck body tail light boxes, are fixed to the tail light boxes, and hold the rear edges of the side panel liner sheets in position.

Abstract: A sprinkler system for plants and schrubs growing on the side of a hill has non-drain valves connected at discharge heads that are positioned at elevations below the main control valve for the system. The non-drain valves are opened by pressure of water exerted when the main control valve is opened. After the main control valve is closed and water pressure in the pipe system that feeds the discharge heads falls to a selected value, the non-drain valves automatically close, thereby preventing drainage from the discharge heads of water retained in the pipe system between the relatively low discharge heads and the relatively high control valve.

Abstract: A rotary draw bending machine employs a stack of bending dies 22 of different curvatures, forming part of a bend head 18 that is entirely mounted on the forward end of the machine bed 10 for bi-directional lateral and vertical motion so that without changing the position of the centerline of the pipe 16 to be bent, it may be formed by bend dies of different curvature. The entire bend head 18 is shiftable laterally to enable the bend dies to clear the pipe 16 as the dies move vertically to position another die. A single pressure die 20, which is mounted on the movable bend head 18, is mounted for vertical movement relative to the bend head so that it can be positioned in alignment with the pipe.

Abstract: A turbine generator system for use in a flow line from a water supply to a water usage, treatment or storage system employs a remotely controlled valve for control of the flow of water through the turbine. The system is arranged to shut down upon occurrence of under or over voltage at the generator or loss of pressure at the turbine, disconnecting the generator from the utility line and closing the control valve to stop flow through the turbine. Should failure of the utility line power decrease the generator load to increase turbine speed, restart is prevented until the control valve has closed to stop the turbine. A time delay in the control panel shuts down the system if the control valve does not open within a selected time interval after start up.

Abstract: In the present apparatus and method, there is first selected a compact fluorescent lamp having a small fluorescent tube and also having a base, there being two contact pins on the base, there also being on such base a starter housing which projects from the base on the side thereof remote from the tube. There is also selected a screw plug having a metal screw portion adapted to screw into a socket for an incandescent lamp bulb, and also having a contact button, the screw portion and contact button being mounted on a hollow insulating body which has a flange at its end remote from the contact button, the flange being recessed and having diametrally opposed boss portions on opposite sides of the body. There is then mounted, on the flange portion, a thin, insulating socket having conductive pin sockets therein adapted to receive the contact pins of the fluorescent lamp. The insulating socket also has an opening adapted to receive the starter housing.

Abstract: This invention provides a filter pin connector having two capacitor disc assemblies, each with a plurality of openings receiving the connector pins and held within a connector shell. Each capacitor disc includes a plurality of laminations of conductive material formed by providing conductive ink on layers of ceramic tape which are fused together to form a unit. The laminations are in two sets and alternately arranged to provide opposed capacitor plates. The laminations of one set are connected to the pins and those of the other are connected to the shell.

Abstract: A method and means for providing a protective environment for submerged pumps are described. For a submerged water pump a shell or casing is installed to enclose at least a lower portion of the pump, and a protective fluid medium, typically compressed air, is introduced in the shell to exclude water from contacting the pump operating components or lines when the pump is not in use. Means are provided for quickly removing the protective medium and permitting water to enter the pump when it is desired to put the pump into operation.

Abstract: High strength composite tape is prepared for laying in side-by-side strips upon a work surface by precutting the strips to a predetermined length and mounting the strips upon a carrier belt in longitudinally spaced relation to one another, so that the pressure foot of the machine applying the tape to a work surface may press to the end of one tape strip without pressing the end of the following tape strip. Improved laying of the tape is achieved by stretching a strip of tape entirely across the area on which the tape is to be laid before pressing any part of the tape against the work surface, and then pressing the tape against the surface while the tape is stretched across and adjacent the work surface. The tape is held and stretched across the work surface on supply and take up reels on opposite sides of the work surface, so that the reels need not move along the tape with the moving pressure foot.

Abstract: A flexible folding garment bag having a detachable cowl is described. The cowl covers the open upper ends of the front panels of the bag and is provided with an interior compartment and means for hanging the cowl in either a vertical or horizontal orientation while removed from. Alternatively, the cowl can be attached to the rear of the bag or folded to expose the closure means on the front of the bag.

Abstract: A unitary system incorporates an upper reservoir container having a blood gas separator, a cardiotomy reservoir and a venous reservoir. The upper container is positioned directly above a lower mass transfer container coupled with the venous reservoir by means of a check valve and having a spirally wound flattened tubular transfer membrane. A vacuum is drawn upon an upper portion of the reservoir container which carries a blood gas separator into which aspirated wound site blood is drawn for filtering and collection of blood in the cardiotomy reservoir. The latter is automatically drained via a pressure responsive valve into a venous blood reservoir at the lower portion of the reservoir container and into which venous blood flows for mixing with the filtered cardiotomy blood.

Abstract: A duffle bag having a number of latching devices and slide fastener closures for providing access to a number of different interior compartments is provided with a single security device that prevents inadvertent or unauthorized opening of the latching devices and fasteners. The slide fasteners have apertured slide operators. A bag flap is closed by quarter turn twist locks having apertured twist studs. A flexible cable, fixed to the bag at one end, is threaded through the slide operators and apertured twist studs and has its other end connected to a lock plate that is fixed to the bag. The lock plate is arranged to accept a key-operated lock that prevents unauthorized detachment of the cable end from the lock plate.

Abstract: This invention provides a cross-stitching arrangement in which a desired embroidery pattern first is laid out in outline form on a paper and then reproduced by stamped crosses on the material that is to receive the cross-stitching. The paper layout may be on quadrille paper with rows of aligned squares encompassed within the pattern corresponding in size and position to the crosses to be stitched to the material. Alternatively, the pattern may be laid out on plain paper with crosses applied in aligned rows as defined by the pattern, these rows of crosses then being reproduced on the material in giving the locations of the cross-stitches to be made. The stamping of the material, and of the paper in the alternate procedure, is accomplished by a stamp having a predetermined size of cross marking.

Abstract: A high speed, high resolution programmable multiformatting hardcopy video printer is devised by using a fiber optic face plate on a cathode ray tube wherein a fiber optic face plate has an electrophoretically deposited phosphor which is activated by the cathode ray tube elements. Photosensitive paper is positioned by a motorized printer in front of the face plate and exposed to the full frame video image found on the face plate by contact printing. A multiple number of full frame images may then be imprinted into the photosensitive layer of the paper across the horizontal axis according program control. The paper is then moved vertically in front of the face plate, again according to program control to allow one or more additional horizontal rows of full frame images to be imprinted in the photosensitive paper. The paper is then fixed and developed so that the latently imprinted images are rendered visible.

Abstract: Vaginal muscle contraction is sensed by change of pressure within a flexible, hollow tubular member that is adapted to be compressed in response to muscle contraction. A simple pressure transducer embodies a pressure tube connected with the tubular sensing member and having an end covered by a flexible diaphragm that expands in response to increased pressure so as to progressively block light transmitted to a photosensitive resistor. The resistor controls an electrical signal that is employed to provide an audible or visual display that provides a measure of relative strength of muscular contraction and which also may be used in a biofeedback loop to inform the user of the intensity of the contraction. Accuracy of the inexpensive transducer is increased by compensating the output electrical signal for both nonlinearity and hysteresis of the distensible rubber diaphragm.