Abstract: A check valve assembly which when opening has a valve closure which is lifted from its seat before fluid flows past the unseated closure, and which when closing terminates flow in advance of the closure reengaging its seat.

Abstract: An improved cutting tool has general utility, but is particularly adapted for use as a profile-style cutter, or as a form-relieved cutter. The cutting tool includes a body provided with a plurality of slots spaced circumferentially thereabout, a blade arranged in each slot, and a wedge inserted axially into each slot to securely mount the blade on the body. Each blade is provided with a pair of axially-spaced locating shoulders extending rearwardly from its trailing surface, and adapted to embrace the side faces of the body to prevent axial movement of the blade relative to the body. The wedge has a retaining lug extending forwardly beyond its leading surface, and adapted to be slidably inserted into a retaining groove provided in the body. The wedges and blades have cooperative compound tapered surfaces which are adapted to engage one another to cause the blade to seat against the slot base and trailing surfaces, and to prevent radial movement of the blade relative to the body.

Abstract: A ski brake is incorporated in a slide mount for a ski binding component. The slide mount has a rail mounted on the ski, a slide mounted for movement along the rail, and a lever mounted for pivotal movement relative to the rail, and arranged to effect movement of the slide. The slide carries a plunger assembly component of the ski binding. The ski brake includes extensions mounted on the liner for movement therewith, and a torsional spring arranged to urge the lever to move toward a raised position. The torsional spring causes the lever to move to its raised position in the absence of an axial load on the plunger. As the lever moves toward its raised position, the extensions move downwardly below the ski to inhibit free sliding movement of the ski.

Abstract: A trimless flush floor fitting for positioning at an opening in a floor or other structural member, at a level line of said structural member, the fitting comprising a leveling frame member and linkage members complementarily adjustably connecting the frame member with a bracket in said floor opening, whereby, on actuation of the linkage means, said leaving frame may be adjustably moved to conform to the level line of the structural surface, without the necessity of using complex and special trim accessories. No trim shows on the carpeting or other floor covering material, the latter being used without pieces being removed therefrom (as in prior practices). Architecturally there is only a minimum of clutter on the carpet surface, only the cables, when coming through the device being visible; when the device is not in use, it is completely invisible and concealed by the carpet, which is back in place.

Abstract: This invention relates to a window frame construction. In practice, on installation of window frames comprising top and side members, the junctures or top corners thereof are frequently open slightly or out of registry forming a weak structure of non-workmanlike appearance. Pursuant to the invention, a window frame construction is provided including an elongated or top window frame bar and side window frame bars assembled with their ends in abutting juncture.

Abstract: An improved regulator is provided for varying the rotational speed of a screw conveyor arranged to supply material to a variable-volume chamber having a piston slidably mounted in a cylinder. The regulator produces a sum signal proportional to the algebraic sum of positive input signals reflecting the desired degree of chamber filling and the desired discharge volume, and negative input signals reflecting the actual filling volume and the actual degree of chamber filling. This sum signal is converted to a proportional time-dependent signal which is used to adjust the speed of the conveyor. The conveyor speed is increased or decreased by an amount depending on the magnitude and polarity of the sum signal. In use, the regulator practices an improved method of regulating the speed of a conveyor.

Abstract: A control circuit is adapted to control the movement of a pintle relative to the die head of extrusion apparatus. A command signal is supplied to a signal generator, which produces a first output signal in the form of a series of continuous voltage triangles, and a second output signal in the form of unit pulses. An impedance matrix contains a plurality of potentiometers which may be remotely connected to a summing amplifier. The potentiometers are arranged in a numerical order. Odd-numbered potentiometers are supplied with the triangular output signal from the signal generator. Even-numbered potentiometers are supplied with the signal generator triangular output signal, but which has been phase-shifted by half the width of one triangle. The pulse output from the signal generator is supplied to a decoder, which successively connects pairs of numerically-adjacent potentiometers with the summing amplifier during overlapping time intervals.

Abstract: A control system for a hydraulic punch press is adapted to dissipate the energy stored in a hydraulic actuator so that the punch will exit the workpiece without substantial release impact. The control system includes a signal generator for producing a progressively increasing command signal while the punch penetrates the workpiece, a position transducer for producing a negative feedback signal indicating the actual punch position during such penetration, and a summing point for supplying the difference between the command and actual signals as an error signal to a servovalve used to control operation of the actuator.

Abstract: An improved scoring tool has a uniquely configured tip arranged to be inserted into a cooperative recess provided in a pistol-shaped handle. The handle has an upper tip-holding portion, and a graspable portion extending downwardly away from the tip-holding portion. The front surface of the graspable portion is provided with a plurality of undulations to accommodate the fingers of an operator grasping the handle with a prehensile grip. The improved tip is provided with a sharpened point formed by the mutual intersection of four surfaces. A modified tip is provided with a glass-cutting wheel. The shape of the handle allows the operator to maintain adequate control, while exerting greater downward pressures to more deeply and clearly score sheet material.

Abstract: An improved tray assembly broadly includes a tray and a bail. The tray has a bottom and a pair of spaced side walls. An outer wall is spaced from each side wall, and is provided with an opening spaced laterally from the tray's center of gravity. Distal end portions of the bail are inserted into the openings to mount the bail for pivotal movement relative to the tray between a raised position and a lowered position. A stop member engages the bail in its raised position to prevent further pivotal movement thereof in one angular direction. An abutment member engages the bail in its lowered position to prevent further pivotal movement thereof in the opposite angular direction. If desired, the tray assembly may further include a roller having stub shafts extending axially outwardly from either end face. These stub shafts may be journalled in trunnion bearings mounted on the tray.

Abstract: Apparatus is provided for testing the strength of a seal provided between an underlying substrate material and an overlying sheet material of a container. The package is inflated through an inflation needle inserted into the container. The pressure in the container is sensed through a sensing needle inserted therein. The apparatus may be used to test the tensile strength of the seal, and the location of any leaks therein.

Abstract: The dynamic performance of hydraulic apparatus including a fluid-operated actuator controlled by a servo-controller, is improved by providing phase lead compensation to the controller in response to movement of the movable element of the actuator so that the low frequency response of the apparatus is raised.

Abstract: Apparatus for roll-stabilizing a vehicle broadly includes a compound physical pendulum operatively arranged to sense the lateral and angular acceleration of the vehicle attributable to an applied disturbance torque, and an inertia wheel arranged to be accelerated in the appropriate angular direction to exert a reaction torque on the vehicle to oppose the disturbance torque. The compound physical pendulum has a rigid dumbbell-shaped member mounted for frictionless pivotal movement between opposing discharge nozzles of a hydraulic amplifier. The hydraulic amplifier produces a differential control pressure in response to the acceleration forces acting on the pendulum, and this control pressure is used to operate a servovalve. The servovalve produces a drive pressure which is supplied to a hydraulic motor to accelerate the inertia wheel in the appropriate angular direction.

Abstract: A sprayable undercoating composition comprising a homogenous mixture of leather dust, water, neutralizer for the acidity of the leather dust, clay-based gellant, polar dispersant, organic rust inhibitor, and solubilized asphalt containing volatile solvent.

Abstract: An apparatus for equalizing top gas pressure exerted on the bottom surface of the large bell operating in the large bell hopper in a top closing device for a blast furnace, so as to enable opening of the large bell for the feeding of charge therethrough during operation of the blast furnace of any top gas pressure, including a venturi scrubber, located at the top or in the vicinity of the blast furnace, connected by ducts to the uptake or other gas main for furnace top gas, and a separator, mounted at the top or in the vicinity of the blast furnace, connected by ducts to the venturi scrubber and large bell hopper, which elements scrub the furnace top gas and direct scrubbed top gas into the large bell hopper, so as to exert equalizing pressure on the large bell with scrubbed top gas, and further including an ejector, mounted in the venturi scrubber, which maintains a continuous flow of scrubbed top gas into the large bell hopper, so as to maintain equalizing pressure therein.

Abstract: An applicator for applying a liquid coating to a suitable object includes a pad and a detachable handle. The pad includes a cushion, working means applied to the cushion lower surface, and a backing plate secured to the cushion upper surface. The plate is provided with hooks extending upwardly from its upper surface, and each hook is arranged along one of three sides of an imaginary square so as to capture an object slidably inserted into this imaginary square from the fourth side thereof. The handle has, adjacent one end, an outturned square perimetrical flange which is adapted to be inserted into engagement with the hooks at any of four angular positions. The applicator may further include an adapter arranged to be inserted into the open end of the tube-like handle, to modify the same to matingly receive the threaded end porion of an extension pole.

Abstract: An improved cutting tool has general utility, but is particularly adapted for use as a profile-style cutter, or as a form-relieved cutter. The cutting tool includes a body provided with a plurality of slots spaced circumferentially thereabout, a blade arranged in each slot, and a wedge inserted axially into each slot to securely mount the blade on the body. Each blade is provided with a pair of axially-spaced locating shoulders extending rearwardly from its trailing surface, and adapted to embrace the side faces of the body to prevent axial movement of the blade relative to the body. The wedge has a retaining lug extending forwardly beyond its leading surface, and adapted to be slidably inserted into a retaining groove provided in the body. The wedges and blades have cooperative compound tapered surfaces which are adapted to engage one another to cause the blade to seat against the slot base and trailing surfaces, and to prevent radial movement of the blade relative to the body.

Abstract: An improved ski binding has a resiliently-loaded holding device operatively interposed between a boot assembly and a ski to provide points of contact between the boot assembly and ski at each of three mutually-spaced locations arranged at the apices of an imaginary triangle. At each location, a convex member is mounted on the boot assembly to engage a concave surface on the ski. An improved pivot clip is mounted on the ski and provides two of the concave surfaces. The pivot clip has two cam surfaces, each of which is engaged by a convex member mounted on the sole-plate. Each of the cam surfaces is inclined in a direction such that an external moment applied to the boot assembly about the skier's tibial axis will produce a reaction force between one cam surface and its associated convex member, which reaction force will have a longitudinal component not opposing the applied moment.

Abstract: The invention provides means for processing novel heat treated parts, eliminating danger of contamination of the parts from contaminating ambient or other air and gases. The invention further assures uniform, maximum efficiency in achieving the special hardening and other characteristics of the parts, without contamination thereof, thus obviating the necessity for any supplementary procedures for elimination of warping and other defects which might otherwise occur. The invention automatically and economically achieves the above recited and other objectives, thus assuring uniformity of desired characteristics, qualities and properties in heat treatment procedures, the operations being performed at or above atmospheric pressure thus preventing vaporization of certain alloying elements in the work and container metals.

Abstract: This invention, relating to the art of resizing and decapping fired cartridge cases, comprises a novel method of and apparatus for automatically and safely resizing spent cartridge cases having primer caps, including means for automatically resizing the cases and clearing the case of the spent primer therein, in a highly efficient, automatic procedure, uniformly restoring cartridge cases for reuse. Pursuant to the invention means are provided which automatically orient the fired cases and feed them to a case receiving station from which they are sequentially advanced to a registration station, where swaging or sizing of the outside dimensions of the case to their original dimensions is effectuated and the case is decapped and reclaimed for reuse; the so resized and decapped case is displaced from the apparatus simultaneously automatically on positioning the next case at the registration station for repetition of the procedure.