Abstract: A flexible surface plywood concrete form liner is disclosed which includes a flat planar sheet of relatively thick plywood material which has been precisely sized and squared. The prepared plywood sheet material is coated with a layer of relatively thin, flexible elastomeric material cast as a one-piece layer over the entire surface of one side of the plywood sheet material as well as all four edges. In this way, the elastomeric material is a continuous integral coating bonded directly to the surfaces of the plywood to prevent the penetration of moisture or chemicals from the concrete into the laminations of the plywood during use. A textured negative impression can be provided on the outer surface of the elastomeric material to leave a textured surface in the finished concrete. A novel edge seal which can be slightly angled is formed along the edges of the liner so that the joint between the liners is reinforced to strengthen and prevent blow-out of the concrete at the liner joints.

Abstract: A hand held holder includes a handle portion which joins two outwardly extending bifurcated legs which form an acute angle from said handle. Sharp-edged ridges on lateral teeth are provided on the inside surface of each of the legs and are arranged to extend at least partially across the width of the legs to provide a contact surface for a food item or object which is to be immersed. The outer ends of the legs terminate in a curved section or backwardly angled surface to guide the object into the teeth of the device. The resiliency of the material which forms the handle and legs of the device is sufficient to create a relatively strong compressive force on the surface of the object when it is gripped by the teeth so that, during the immersion in the liquid, when the object has reached suitable saturation, the compressive energy will be suddenly released, causing actual movement of the legs which creates a tactile or visual signal for the user.

Abstract: An improved holder for dispensing rolled products includes a U-shaped bracket having a base member for attachment to a vertical support surface and outwardly extending support members having an aligned conical shaped support shaft on the bottom member while the top member has a downwardly extending retainer shaft. The top shaft retains the roll in a vertical position while the bottom shaft supports the roll and includes surfaces and edges to provide a desired coefficient of friction to the retained roll to permit controlled dispensing from the roll. The bottom support shaft can also have an outwardly extending edge upon which the roll rests to add additional friction during the dispensing operation. Various configurations and surface treatment is provided for the various support shafts and retaining shafts.

Abstract: Roof structure for transparent roofs with girders (11), each with a solar panel (15, 36). The girders preferably have a height equal to have the distance between each girder. Two trapdoors (13, 14), consisting of thermal insulating material (28), are located between each pair of girders, one on the underside of each girder, which can swing on its pivot axis on the girder between horizontal and vertical positions. In the horizontal position the trapdoors shield against heat loss, in the vertical position they allow all light to enter, and in the intermediate position incoming light is reflected towards the sides of the girders (15) for heat absorbtion.

Abstract: Probe for monitoring the corrosion of a metallic reinforcement member in a concrete body. Two elements (11,12) of a rodshaped material, preferably in one piece of a material identical to that of the reinforcement member, are joined in a loop. One leg (11) of the loop is acting as an active, corroding element of the probe, while the other leg (12) is covered by a protective sheating (14) of non-corrosive material, the loop being provided to be connected to an electric circuit for measuring the electrical resistance of the legs. In operative condition, the probe is embedded in the concrete body, electrically insulated from the reinforcement member.

Abstract: Probe for testing of corrosion, to having a helically arranged resistance element on a rodshaped carrier of electrically insulating material. The carrier is embedding a reinforcing core being used as a conductor to the free end of the resistance element. The resistance element has an exposed half and a half covered by a non-conductor, providing an active part and a reference part to be connected in a bridge circuit for temperature compensated measurements.

Abstract: A probe for testing for a corrosive environment in a concrete body by measuring the current and the voltage between two metallic elements of different materials, one of which being of a material similar to that of the reinforcement members to be provided in the concrete body. The two elements are rods arranged with holding means to maintain the elements in a parallel relationship when preparing the concrete in situ.

Abstract: A dialysis reuse system for cleansing, sterilizing and testing a hemodialysis machine and its associated dialyzer and blood tubing set. The reuse control device automatically controls either the selected reuse cycle or dialyzer test cycle as desired. In the reuse cycle a proper solution of bleach, rinse water and formaldehyde disinfectant is flushed through the system for a prearranged time period and in proper sequence to completely cleanse and disinfect the entire dialysis system including the dialyzer and blood lines. At the end of the cycle, the system is isolated, leaving the disinfectant solution intact within the system to prevent bacteria growth and contamination. In the dialyzer test cycle, a dialyzer clearance test is automatically performed using the associated hemodialysis machine to test the condition of the dialyzer membrane prior to patient treatment.

Abstract: A method and device for measuring the distance to an object, particularly the distance to the surface (17) of a liquid in a container (15). An antenna (11) is arranged a distance from and aimed against the surface, the antenna being connected to a measuring unit (12), a channel unit (13) and a control unit (14). A microwave signal with a predetermined frequency is generated in the measuring unit (12), of which a part is utilized as a reference signal, while a further part is input to the antenna (11) and transmitted against the surface (17). From the reflected signal received by the antenna and supplied to the measuring unit (12) and the reference signal, a function of the antenna input reflection coefficient is determined. This function is adapted to the current condition. A fourier transformation of a set of values of this function at a certain set of measuring frequencies is made, from which the distance to the surface is calculated.

Abstract: A portable, free-standing shelter for hunters and the like which is of generally frusto-conical configuration and has a base and upwardly inclined side panels terminating in an open top. The sidewalls are defined by a plurality of panels of generally trapezoidal configuration, having top and bottom edges connected by upwardly convergent opposite sides. Hinge means interconnect adjacent sides of the panels in articulated pivoting relation so that the side panels can be folded back over each other. The connected side panels may be arranged into various configurations. The top of the shelter can be closed with a suitable cover which is supported by a number of flexible rods or poles which are mounted diagonally across the top opening and have sufficient length to be bowed in an upward direction to suitably support the covering in a curved configuration.

Abstract: A novel traveler's head support is provided which includes an elongated relatively wide flexible woven strap having a relatively large loop formed at one end. The end of the loop is provided with a padded section for supporting the forehead of the user and an adjustable length strap attached across the top of the loop to hold the strap in position on the head of the user. The free end of the strap is of a proper length to extend down the back of the user and under an armpit and is wrapped or attached to one of the forearms. An attaching material is positioned on the surfaces of the strap so that the strap will adhere to itself and be held in position on the forearm of the user. Various adjusting and attaching arrangements can be used with the present headrest.

Abstract: A portable, free-standing shelter for hunters and the like is of generally frusto-conical configuration and has a base and upwardly inclined sidewalls terminating in an open top. The sidewalls are defined by a plurality of panels of generally triangular or trapezoidal configuration, having top and bottom edges connected by upwardly convergent opposite sides. Hinged connecting means interconnect adjacent sides of the panels in articulated relation so that the bottom edges of the panels define the base of the shelter and the top edges of the panels define the open top thereof. The connected panels may then be arranged into various configurations, including a substantially open shelter or screen, or a closed or partially closed shelter as desired.

Abstract: A hand-held tape measure is provided which includes a conveniently sized housing with an elongated measuring tape suitably coiled on a rotatable shaft mounted within said housing. A sprocket arranged to engage the surface of the tape without slippage is mounted within the housing and drivingly connected to an encoding disk whereby the rotation of the disk is directly proportional to the linear movement of the free end of the tape. The disk is divided into an equal number of alternating transparent and opaque segments and two energy sensitive coupler switches are mounted in conjunction with the disk to provide electrical outputs indicative of the adjacent disk segment to indicate the rotation of the disk. The switches are offset circumferentially to provide a phase differential which indicates whether the tape is extending or retracting with respect to the housing. The output from the switches is fed to an electronic circuit which counts and divides the output pulses with the result digitally displayed.

Abstract: An improved computerized moment stability system is provided which will rapidly obtain the solution to operational and post damage stability problems which may be present on an oceangoing vessel. The system includes three functional modules plus an initialization data base module. The data base modules stores the basic stability data concerning all watertight compartments and tanks onboard the vessel. An operational stability module is provided for performing the operational calculations to determine the stability parameters which exist under normal conditions. In addition, the operational module can provide reports concerning the day to day inventory of consumables as well as help in properly performing the loading and unloading of the vessel to maintain a safe, stable, condition at all times.

Abstract: A marine propeller locking device for securing a propeller to the drive shaft of a marine engine. The locking device includes a suitable retaining nut, exterior cover covering the retaining nut and preventing access, and a retaining bolt for mounting the cover on the retaining nut. A cylindrical surface is provided on the end of the retaining nut which compliments a like surface on the interior portion of the cover. A pair of O-rings are suitably mounted on the surface of the retaining nut and allow the cover to turn with respect to the nut yet maintaining a waterproof seal therebetween. The O-rings are spaced longitudinally a suitable distance to provide transverse support and stability for the cover. The head of the retaining bolt has a specific groove pattern which is matched by a companion wrench so that the bolt cannot be removed by an unauthorized person using common ordinary tools. A cap having a waterproof seal is positioned over the end of the cover so as to seal the internal cavity.

Abstract: A bellows-type energy absorbing device comprising at least two elongated bellows sections each having an adjacent tubular support section assembly wherein one bellows and tubular support section is sized to fit within the other. The sections are reversed and arranged so that the bellows and tube sections are arranged coaxially aligned with each other. The tubular support section of one bellows provides an alignment support for the adjacent bellows with the other support section providing the alignment support for the other adjacent bellows section. The bellows and tube assemblies are joined together at their ends by welding to form a sealed tubular unit. The support sections are arranged to telescope and retain the overall axial alignment of the device during collapse of the convolutes of the bellows section during the application of impact energy at either end of the device.