Abstract: A liquid propellant gun system has an annular differential piston journaled for telescopic movement with respect to an annular control valve and to the chamber of the firing bore; uses the piston, the valve and the projectile as valve means for controlling the injection of liquid propellant into the combustion chamber of the gun system; uses a displacement type control means to limit the rate of the loading of liquid propellant and to provide a positive evacuation of misfired liquid propellant from the combustion chambers; and incorporates a vernier control circuit to give direct control over the performance of the gun.

Abstract: An additional range device for an infinitely variable split output synchronously shifting hydromechanical steering transmission having integral steering and multiple forward ranges wherein the additional range device provides an additional different input to an existing range mechanism to drive that range mechanism in a new speed range to constitute a new higher range for the transmission.

Abstract: A regenerative liquid propellant gun structure in which the differential area piston is annular, has an open peripheral cylindrical skirt extending away from the combustion chamber to define a propellant reservoir, and has an aperture in the piston head permitting overrunning of a fixed bolt. The fixed bolt is cylindrical with an enlarged band to fit the aperture to block flow of propellant until firing and to define with the edge of the aperture a variable annual orifice for propellant injection as the piston moves. There is a second free piston overrunning the bolt having a forward portion mating with both the inside of the differential area piston and the exterior of the cylindrical skirt so that the skirt constitutes a piston in a circular dashpot in the second piston.

Abstract: An improved disk clutch structure in which a hydraulic piston provides the force to cause frictional contact between clutch plates. The invention resides in the use of a drain conduit and pressure responsive drain valve in combination with a vent conduit and a pressure responsive vent valve to remove hydraulic fluid from the hydraulic cylinder on inactivation of the clutch with the location of conduits being such that removal of the fluid from the cylinder is assisted by centrifugal forces created by moving clutch parts and such that only the hydraulic cylinder is evacuated.

Abstract: A regenerative liquid propellant gun structure in which the differential area piston is annular, having a peripheral cylindrical skirt extending away from the combustion chamber to define a propellant reservoir, and has an aperture permitting overrunning of a fixed bolt. The fixed bolt is shaped to define with the edge of the aperture a variable annual orifice for propellant injection as the piston moves. There is a second free piston overrunning the bolt and mating with the inside of the differential area piston to complete and provide for emptying of the reservoir. The structure also contains a spring to allow components to move responsive to increased combustion chamber pressure to provide for an initial movement of differential area piston relative to the bolt to start propellant injection and a fluid pressure means for movement of pistons after firings to facilitate reloading.

Abstract: A regenerative liquid propellant gun structure in which the differential area piston is annular, having a peripheral cylindrical skirt extending away from the combustion chamber to define a propellant reservoir, and has an aperture permitting overrunning of a fixed bolt. The fixed bolt is shaped to define with the edge of the aperture a variable annual orifice for propellant injection as the piston moves. There is a second free piston overrunning the bolt and mating with the inside of the differential area piston to complete and provide for emptying of the reservoir. The structure also contains a spring to allow components to move responsive to increased combustion chamber pressure to provide for an initial movement of differential area piston relative to the bolt to start propellant injection and a fluid pressure means for movement of pistons after firings to facilitate reloading.

Abstract: A simplified range change mechanism for an infinitely variable, split output, synchronously shifting hydromechanical steering transmission having integral steering and at least three forward ranges having progressively lower torque and higher speed propulsion ratios in successively higher ranges while maintaining positive steer with a constant steering torque ratio in all ranges.

Abstract: An improved battery structure for a multicelled primary cell circulating electrolyte battery which provides for uniform distribution and rate of flow of the electrolyte to all of the cells. Batteries of this type include an intake raceway to conduct electrolyte along the edges of the cell plates to introduce the electrolyte to all of the cells. The invention contemplates the use of a flow restrictor in the form of a physical separator between the intake raceway and the cells which is interrupted by passages to permit a controlled flow of electrolyte to the cells. The passages are sized and located responsive to system parameters to provide a uniform flow and a predetermined pressure drop at the restrictor which is preferably of the order of ten times the pressure drop of the electrolyte through the cells.

Abstract: A centrifugal (cyclone) separator for extracting entrained gas from a liquid. The axially aligned gas exhaust orifice at the end of the separator is protected by a screen or filter which intercepts and filters out incidental debris. The structure carrying the screen is mounted for rotation about the separator axis and carries vanes which extend into the swirling liquid to rotate the screen responsive to liquid flow to clear the screen with a centrifugal action.

Abstract: An infinitely variable split output synchronously shifting hydromechanical steering transmisson having integral steering and at least three forward ranges having progressively lower torque and higher speed propulsion ratios in successively higher ranges while maintaining positive steer with a constant steering torque ratio in all ranges.

Abstract: A regenerative liquid propellant gun having structure which reacts to combustion pressure to dispense and regulate the flow of liquid propellant from an included reservoir as one parameter for obtaining a predetermined pressure/time curve of gun chamber pressure. A first coaxial pumping piston is a differential area pressure piston operating between the combustion chamber and the primary propellant reservoir. A second coaxial piston in a bore in the first piston opens and closes injection ducts running through the pumping piston from the primary reservoir to the bore to interdict flow of propellant to the combustion chamber as a result of relative motion of the two pistons as one or both move responsive to propellant combustion pressure.

Abstract: Ordnance recoil mechanism for controlling, collecting and storing firing reaction energy and for returning the recoil mass to battery by means of stored reaction energy including structure for storing energy not used in counterrecoil and making that stored energy available for use subsequent to return to battery of the recoil mass.

Abstract: 2. In a combination, a transducer for an underwater object locator comprising a plurality of radiating elements, each element comprising a magnetostrictive member having a plurality of separate windings thereon, a first winding of each of said elements being connected in series for radiating a signal, a second winding of a first one-half of said elements being connected in series to form a first channel for receiving reflected signals, corresponding second windings of the other half of said elements being connected in series to form a second channel for receiving reflected signals, means responsive to the difference in amplitude of signals in said channels to provide azimuth information of a reflecting object, and means responsive to the difference in phase of signals in said channels to provide elevation information of such object.

Abstract: A capacitive touch panel comprising an array of touch sensitive switch cells, the panel including relatively small area touch switch elements located on closely spaced centers, that can be of transparent construction particularly suited for use with data processing equipment and electronic displays. Each switch cell includes a first and a second pair of series connected capacitors energized by a common signal source, the array of switch cells being arranged so that the first pair of capacitors are connected in first groups of switch cells, such as rows, to a corresponding first plurality of signal detectors, and the second pair of capacitors are connected in second groups of switch cells, such as columns, to a corresponding second plurality of signal detectors, the junctions of each pair of capacitors of a single switch cell being selectively coupled to ground by the body or other touch capacitive means for actuating a selected switch cell.

Abstract: An improved multirange synchronous shifting hydromechanical transmission wherein an overrunning clutch in parallel with the friction clutch of the lower gear range of two adjacent ranges is used to permit bridging the discontinuity in efficiency curves of the two ranges at the shift point to sustain operation under a load condition falling between the two efficiency curves and to prevent "hunting" during shifts between the two ranges.

Abstract: An information processing system employing functionally distributed multiple processors has a unique manner of interconnecting and controlling the processors so that the deadlock problem is avoided even though the interconnection of the processors is based on a graph basis in the mathematical sense. The system employs a plurality of control processors of the same or different design to control by sequences of instructions the operation of data processors or other control processors. Each data processor performs a specific set of functions on varying data structures to accomplish such purposes as providing a memory in which a program resides or performs arithmetic or string computations. The design of the control and data processors are required to meet the definition of a control arc scheme for inter-processor communication.

Abstract: A multi-range synchronous shifting concentric gear train package having two inputs and a single output which when connected to a mechanical input and to the output of an infinitely variable drive device (shown as a hydrostatic component) powered by the same mechanical input with the input axes aligned with the center of rotation of the components of the gear package forms an all concentric multi-range synchronous shifting hydromechanical transmission. The combination of the same gear train package with mechanical and hydrostatic inputs in combination with right and left output planetary gear sets and a hydrostatic steer arrangement powered by the same mechanical input forms a hydromechanical steering transmission having a concentric gear train package. Gear train elements for exchanging the rotational movement of inner and outer shafts of a set of concentric shafts to permit implementation of the concentric gear train package are also disclosed in detail.

Abstract: A multi-range synchronous shifting concentric gear train package having two inputs and a single output which when connected to a mechanical input and to the output of an infinitely variable drive device (shown as a hydrostatic component) powered by the same mechanical input with the input axes aligned with the center of rotation of the components of the gear package forms an all concentric multi-range synchronous shifting hydro-mechanical transmission. The combination of the same gear train package with mechanical and hydrostatic inputs in combination with right and left output planetary gear sets and a hydrostatic steer arrangement powered by the same mechanical input forms a hydromechanical steering transmission having a concentric gear train package. Gear train elements for exchanging the rotational movement of inner and outer shafts of a set of concentric shafts to permit implementation of the concentric gear train package are also disclosed in detail.

Abstract: A condensation nuclei counter for measurement of the concentrations of Aitken particles in gases by measurement of light scattered in a cloud chamber by water droplets formed on the particles in successive samples of a gas wherein the counter provides for sequential high speed sampling of the photodetector output during the cloud chamber growth of the droplets of each gas sample tested as a way of measuring the rate of increase of total droplet cross-section and wherein the counter provides for automatic ranging for particle population coordinated with the timed sampling during particle growth.

Abstract: 1. The method of acquiring a target with a torpedo comprising the steps of launching the torpedo into a target area, causing the torpedo to descend in a substantially vertical direction, actuating acoustic transducer means in order to detect the presence of a target while the torpedo is descending in said substantial vertical direction, and initiating an attack mode upon acquiring a target.