Abstract: The advent of relatively wide beadless tires on off-highway trucks and the like has dictated the desirability of providing a suspension system which separates the damping functions during the bounce and roll movements occurring between a truck frame and an axle assembly suspended thereunder. In particular, it is desirable to provide a soft suspension during the bounce mode of vehicle operation whereas a relatively stiff suspension is desired during the roll mode thereof. The suspension system (12) of this invention accomplishes the above by providing a first suspension (18) for damping bouncing movements (B) and a separate and isolated second, suspension (24) for damping rolling movements (R), with the second suspension (24) being disposed in a vertical plane which intersects a universal connection (16) connecting an axle assembly (11) to a vertical frame (10). The second suspension (24) includes a pair of springs (25) which are spaced outboard of the frame (10) to and in stabilizing the vehicle.

Abstract: A control circuit comprises pressurized fluid source (11), a two-position directional control valve (14) and an actuator (13), such as the pump of a hydrostatic transmission, connected to the fluid source and the control valve to be selectively actuated thereby.

Abstract: A hydraulic control system for a multi-directional multi-speed transmission for the power train of a vehicle includes means responsive to the directional shift of the transmission at a predetermined minimum speed to automatically apply the brakes of the vehicle during a shifting period.

Abstract: A refrigerator door structure comprising a door hingedly mounted on a mullion is disclosed, one or more of which may be mounted in a suitable opening through the wall of a refrigerator compartment without a frame and with or without a starter mullion to close such opening while providing access therethrough. The door and mullion are designed to be inverted to provide for either right-hand or left-hand opening of the door. The packaging of the door structure with appropriate shelving elements is described.

Abstract: Relates to a flux dam for submerged arc vertical position welding. The dam comprises a sheet of high temperature stable non-metallic material, a permanent magnet aligned with a first pole thereof substantially at a first surface of the sheet for magnetically attaching the sheet to a vertical workpiece generally parallel to and spaced by the thickness of the workpiece from a generally horizontal weld area of the vertical workpiece to an abutting horizontal workpiece, the magnet extending generally towards a second surface of the sheet, the magnet being affixed in the aforementioned alignment thereof. Also relates to an improvement in a welding method using said dam.

Abstract: A crawler tractor vehicle having steering clutches and associated steering brake includes a control apparatus for each clutch and brake system, including a valve made up of a valve body, and a clutch valving spool and a brake valving spool movably associated therewith. In one embodiment, the clutch valving spool and brake valving spool are identical in configuration, and are disposed in a common bore. Actuator means are associated with such clutch valving spool and brake valving spool, in one embodiment including an actuator assembly made up of a plurality of plungers movable relative to each other and relative to the valve body to provide particular movement of the clutch and brake valving spools. In another embodiment, the actuator means comprise mechanical linkage means, for providing movement of brake and clutch valving spools positioned in respective separate bores defined by the valve body.

Abstract: In response to oscillator output pulses, a sample pulse generator supplies sample pulses to a fire sensor. In response to the sample pulses, the fire sensor produces a fire sensor signal. A judging circuit receives the fire sensor signals and, if they exceed a predetermined level, produces a judging pulse having a longer pulse duration than the oscillator pulses. This judging pulse is used to trigger an alarm signal. A monitor circuit consists of an AND gate and an OR gate. The AND gate receives as inputs the oscillator pulses and the judging pulses. The OR gate receives as inputs the output of the AND gate and the sample pulses. The output of the OR gate constitutes a monitor pulse that allows the simultaneous monitoring of three conditions, as follows:(1) Lack of a monitor pulse indicates equipment failure.(2) A monitor pulse with the same waveform as the sample pulse indicates normal operation (i.e.

Abstract: A generally rectangular frame having a vertical support column at each corner thereof mounted for vertical movement relative to the frame. Four hydraulic rams, all of the same diameter and one for each support columns, are used are used to connect the frame to the columns, with the two rams at one end causng raising or lowering of the frames by contraction or extension of the rams while corresponding movement of the other end of the frame is caused by opposite movement of the rams thereat. A hydraulic control system selectively: raises or lowers the frame relative to all four columns, raises or lowers the frame relative to one side only of the frame, or or raises one side of the frame while lowering the other. Additionally, the system allows the columns at one end of the frame to move freely, in equal and opposite directions relative to the frames.

Abstract: A method for controlling usage of a programmable computing machine which operates in accordance with uncoded or published machine language operation codes including uniquely encoding the uncoded operation codes of instructions of a program to be used on the computing machine as a function of location of the instructions in memory and as a function of machine state, and adding to the machine a decoder that decodes only the uniquely encoded operation codes.

Abstract: PCT No. PCT/US 79/00837 Sec. 371 Date Oct. 10, 1979 Sec. 102(e) Date Oct. 10, 1979 PCT Filed Oct. 10, 1979Pneumatically operated control mechanisms (10-18) for vehicles have often been found to leak control fluid during start-up in extreme cold conditions until attaining normal operating temperature. It has been discovered that the problem lay in loss of resiliency of poppet valves (21) because of the exposure of the elastomer seals (24,26) to extremely cold ambient operating conditions. The problem has been solved by heating the incoming air. Reliable heating is accomplished under extreme cold conditions by use of a fluid heater (40) having an elongated heating member (41) and inner and outer sleeves (48,51) around the heating member to provide inner and outer annular spaces (49,52) through which the fluid to be heated flows in counter-current directions.

Abstract: A control pedal assembly (10) including first (16), second (18) and third (12) pedal portions, the first (16) and second (18) pedal portions each being pivotally movable relative to the third (12) pedal portion and extending in a common direction from an edge portion of the third (12) pedal portion, the third (12) pedal portion being movable relative to the first (16) and second (18) pedal portions, each one of the pedal portions being separately movable and simultaneously movable with another of the pedal portions.

Abstract: Disclosed is a process for converting crude carbon such as coal, carbonaceous wastes and the like into valuable chemical products and/or energy. A mass of solid crude carbonaceous fuel is fed into a high temperature liquid which acts as a solvent for carbon at a temperature sufficient to carbonize the mass and by which the carbon is separated from impurities. Volatile fractions are removed from the mass which acts as a distillation column. Air, or another oxygen source, is introduced into the reactor wherein it reacts with the carbon dissolved in the liquid therein, which may preferably be iron to form a hot fuel gas. The hot fuel gas is then used to produce useful energy, generally via a stepwise procedure.

Abstract: In a crane system for moving a cargo container, an improved system for maintaining the container in a locked relation against a spreader assembly having a plurality of proximity sensors which initially control the ability of said system to lock the container to said spreader, includes a relay connected so as to be actuated by the initial coupling of power to the locking solenoid, such relay acting to maintain power to the locking solenoid even if one or more of the proximity sensors subsequently changes state. The system further includes another relay operatively connected to restore the system to an operative condition after a loss of power has been experienced, such relay functioning to restore power to the locking or unlocking portion of the system, once power has been reestablished, independent of the state of the proximity sensors.

Abstract: A game of backgammon played electronically in which movement of men by the players is limited to switch controls exclusively. A memory stores signals representing the number of men of each player at each of the game positions and these signals are used to energize light emitting diodes on a console to display the positions of the men. The memory is updated each time a player moves a man to store signals representing the changed positions. Control circuitry in the console, in accordance with the rules of the game, (1) moves a man of one player from an initial game position to a final game position, (2) moves a man of the other player on the final position to the 0 position of this other player if this other player has only one man on the final position, and (3) prevents the one player from moving a man to the final position if the other player has at least two men on the final position.

Abstract: A filter assembly comprises a plurality of filter elements telescopically mounted relative to each other and in a housing defining an inlet and an outlet thereon. Each filter element comprises a tubular screen having a plurality of longitudinally extending ribs secured in circumferentially spaced relationship therearound. First and second filter elements of each radially adjacent pair of filter elements have the ribs thereof aligned in abutting relationship to space the screens of the filter elements radially from each other to define a flow passage therebetween. The screen of the outermost filter element is cylindrical, the screen of the next radially adjacent filter element is frustoconically shaped and et sequence to closely compact the filter elements together. An end cap is secured on one end of the filter assembly to retain it in place in the housing.

Abstract: The standard D3 signalling frame bit pattern of a T1-type PCM telephone system is modified to provide a pattern in which (4n-3) separate low-speed data channels can be transmitted in a superframe consisting of 12n frames of the PCN carrier (n being a positive integer), without requiring a separate synchronization detector for superframe synchronization. Simple self-synchronizing circuit means are further disclosed for multiplexing a large number of essentially steady-state signals onto the low-speed data channels, and for positively detecting the onset and cessation of each steady-state signal, independently of the onset and cessation of any other steady-state signal, once in each group of k superframes, where k-1 is the number of steady-state signals being multiplexed.

Abstract: The steering system comprises at least one double-acting fluid cylinder, a directional control valve connected to the cylinder for alternately extending and retracting the cylinder and a hand metering unit for communicating a fluid steering signal to the directional control valve whereby an engine-driven pump is adapted to communicate pressurized fluid to the cylinder for steering purposes. A variable flow control valve is interconnected between the pump and the hand metering unit for communicating a variable fluid flow to the hand metering unit in proportion to the speed of the pump to vary the fluid steering signal whereby an operator can sense the speed of the pump. In the preferred embodiment of this invention, the variable flow control valve comprises a pair of spring-biased, reciprocal members which sense a differential pressure across the valve to control fluid flow through an outlet which is adapted to be connected to the hand metering unit.

Abstract: A loader bucket for an earthmoving machine including a bucket base having a forward end, a plurality of tooth adapters connected to and spaced along the forward end and each supporting a tooth, and a plurality of cutting edges, each extending forwardly of the front end between two adjacent adapters for cutting into the earth. The cutting edges are fastened to the lower surface of the base with bolt assemblies so as to be reversible end-to-end.

Abstract: A board game is disclosed which includes a plurality of each of three different kinds of playing pieces and a board having playing fields thereon adapted to receive each kind of playing piece. Two of the kinds of playing pieces are adapted to be played simultaneously on any playing field and to be moved independently of each other to other playing fields. The third kind of playing piece is adapted to block the playing of at least one of the other two kinds of playing pieces and to be blocked by such kind of playing pieces depending upon which is played first on a given playing field. Two of the three kinds of playing pieces preferably have the same exterior shape and dimensions. Additional kinds of playing pieces having various blocking and non-blocking relationships to the other kinds of playing pieces on the playing fields of an appropriate board are described.

Abstract: A control valve linkage arrangement which is closely adjacent a vehicle operator and which allows easy access to a compartment upon which the operator sits. A control linkage (12) is disclosed wherein positioning of the member (30) to be controlled determines a control signal. The linkage (12) is connected to the valve control member (30) and may be pivoted relative to the valve control member (30) along a plane generally containing the valve control member (30) without axial movement of the said member (30). The linkage (12) can also be moved axially thereby moving the control member (30) axially without pivoting the linkage (12) relative to the control member (30).