Abstract: A terminal tractor for maneuvering a trailer having a fifth wheel component in a confined area has front and rear wheeled sections pivotally connected via an intermediate section for steering the tractor by articulation of the front and intermediate sections relative to each other. The articulation pivot in combination with the fifth wheel pivot connection between the tractor and trailer allows the trailer to be parked by backing with relatively little longitudinal movement of the trailer required. The intermediate section is connected to the rear section by an oscillating connection for allowing the rear section to rotate with respect to the front and intermediate sections along a generally longitudinal axis to allow all of the tractor's wheels to maintain road contact while traveling on irregular road surfaces. The fifth wheel plate of the tractor may be selectively raised to lift the forward ground support of the trailer above the road surface to allow rapid repositioning of the trailers.

Abstract: A venturi increases the velocity of contaminated gases and guides the gases past a high, extremely dense electrostatic field presented perpendicular to the gas flow and extending radially outward between a central, accurately sized disc electrode and the surface of the venturi throat. Downstream, charged particles are collected by a wet scrubbing process or electrostatic precipitator.

Abstract: Continuous wave ultrasonic sound waves from a transmitter and receiver are highly focused to a width of approximately 1 millimeter or less and are transmitted and received through intersecting paths within the tissue of a patient. A doppler flow detector produces an image of the moving blood within the vessel. The transmitter and receiver are systematically scanned over the subject and the detected images are converted into visually intelligible pictures.An improved circuit for more clearly defining the flow picture of the moving blood particles utilizes a conventional directional doppler circuit plus a multiplier-differentiator-low pass filter circuit to automatically eliminate venous flow signals. A grey scale oscilloscope provides brightness intensity on the visual picture proportional to the velocity and direction of the blood flow for detecting stenosis in the vessel.A recording technique is disclosed for detecting atherosclerotic thickening of the artery wall.

Abstract: A skyline logging carriage wherein the winch drum around which the load line is wound is powered by a fluid motor through a worm gear arrangement which eliminates the need for a separate braking system. The fluid motor is driven by a fluid pump powered by a diesel engine mounted on the carriage frame. The hydraulic transmission of power to the winch drum eliminates the need for clutches or direct mechanical connection and braking systems generally required. Greater freedom in placement of the winch drum in relation to the fairlead to obtain an optimum fleet angle and distance between the winch drum and fairlead for proper level winding of the load line about the winch drum is made possible by hydraulic transmission of power to the winch drum. Operation of the winch line is radio controlled by an operator at a yarder or other location. The carriage is moved along the skyline by a main line or main line and haulback lines.

Abstract: A forward, stowable seat and back has a seat frame, floor frame, and forward and rear sets of upright frames which form a modified parallelogram to allow swingable movement of the seat and back from a cantilevered rear position in which the seat and back are cantilevered or suspended rearwardly of the floor frame and a stowable, forward position in which the seat and back are moved forwardly of the rear end of the floor frame. A collapsible link limits the rearward movement of the seat and back and is releasibly held in position by a hook member which latches onto a latch pin hingedly connecting upper and lower links of a brace. The back is held in its rearward position by an elongated strap that slides in a track on the back. Independent, pivotal movement of the back relative to the seat frame occurs by pressing a button on the rear of the back and pivoting the back forward allowing the upper end of the strap to slide along and be guided in the track.

Abstract: A transporting trailer or transporter is provided with a mixing or batch box and a support ramp for supporting a portable mixer. The batch box is stored and carried with the transporter as it is carrying the portable mixer to a construction site. At the site the portable mixer is loaded by the batch box and then driven to the pouring site. The mixer has a power takeoff and when positioned on the transporter automatically provides power to raise and lower the batch box.

Abstract: A method and apparatus whereby an operator within the cab of an automotive vehicle can manually or automatically deflect oncoming and side air flows to obtain the optimum air drag reduction on the vehicle.

Abstract: A load measuring system for a tandem-wheeled vehicle. The tandem axles of the vehicle engage opposite ends of two transversely spaced equalizing beams having their midpoints pivotally supporting the vehicle. Deflections of the equalizing beams and front axle, responsive to loading of the vehicle, are sensed by a load cell transducer mounted on each equalizing beam and on the front axle. An amplifying circuit receives the transducer outputs and drives a load indicator. The load indicator provides a visual indication of front and rear wheel axle loading with respect to a preset maximum load point.

Abstract: An elongated metal workpiece such as a slab or billet is moved longitudinally beneath a grinding head by a reciprocating carriage mounted on an elongated track. The carriage receives a billet from a charging table, reciprocates the billet beneath the grinding head for a plurality of grinding passes, and then delivers the finished billet to a discharge table. The grinder head includes a rotating grinding wheel mounted at the end of a first arm which is pivotally secured to one end of a pivotally mounted second arm. The vertical position of the grinding wheel, and hence the downward force exerted by the grinding wheel on the billet, is principally determined by the angular position and torque, respectively, of the first arm while the horizontal position of the grinding wheel transverse to the longitudinal axis of the billet is principally determined by the angular position of the second arm.

Abstract: A trailer having a rear central guide post and primary rear load carrying wheels which can be elevated to transfer ground contact to caster wheels and lower the trailer bed so that the trailer can be readily maneuvered while the trailer is backed on the caster wheels to assist in properly aligning the trailer beneath a leg-mounted pallet frame for containers having a center guide slot for receiving the guide post, whereupon the primary wheels are lowered to lift the pallet frame free of the ground for transport on the trailer.

Abstract: A packing gland is positioned down within an oil well hole and is held in place by elastomeric sealing and locking devices which are actuated from above the hole through a torque tube. Rotation of the torque tube in one direction lowers the tube axially relative to the elastomers and causes them to expand radially thus locking and sealing the stuffing gland assembly in the well head equipment at a depth of about 100 feet below the ground surface. Counter rotation of the torque tube allows the elastomers to retract radially thus releasing the stuffing gland assembly. Once the stuffing gland assembly is released, a union joint assembly is moved downward relative to the stuffing gland assembly and a unique spring ring slides over a cylindrical boss on the packing gland assembly to couple the union joint assembly with the packing gland assembly. The packing gland assembly then is raised above the ground surface simultaneously with lifting the polish rod from the hole.

Abstract: A venturi increases the velocity of contaminated gases and guides the gases past a high, extremely dense electrostatic field presented perpendicular to the gas flow and extending radially outward between a central, accurately sized disc electrode and the surface of the venturi throat. Downstream, charged particles are collected by a wet scrubbing process or electrostatic precipitator.

Abstract: Cylinders are mounted on an invertible frame. A reciprocably mounted header is provided on the movable frame for engaging the necks of the cylinders to hold the cylinders on the movable frame when inverted and to inject a drying fluid into the cylinders. The movable frame and movable header on the movable frame are adapted for holding various sizes of cylinders.

Abstract: A plurality of modular units formed of ducts and horizontal load-supporting webs each form part of a ventilating floor structure with the ducts and webs being interconnected to adjacent modular units for forming a total floor. The ducts have upwardly diverging sidewalls for strength and a duct of one modular unit is provided with a bead that forms half of a joint to be slid within a downwardly opening recess forming the other half of the joint on an adjacent web. The recess is provided with a downwardly and laterally curving guide flange so that the bead can be rolled into the recess as the modular unit having the bead is rotated into position. The interconnected ducts and webs are underlayed with foam insulation which is carried up into each web for additional insulating thickness the joint is essentially waterproof from water passing into or through the ducts.

Abstract: A rotary cutting blade control system which automatically varies the feed rate to maintain a constant material removal rate. The system senses the current in an electric motor driving the cutting blade and automatically adjusts the feed rate to maintain the motor current constant. The system adjusts a hydraulic valve in the hydraulic system operating the blade support to move the blade in or out whenever the current deviates from a standard which is set by the operator. The control system also includes a circuit for detecting when the load on the blade has dropped below a preset level indicating that the blade has completed the cut and automatically commands the hydraulic system to return the blade to a start position. An additional control circuit operating in conjunction with the no-load sensing circuit automatically produces a command to stop the blade close to the work piece to save time and motion when multiple cuts are being performed.

Abstract: Bales of hay and the like which were bundled or baled in the field are recompressed to about one-half their original length by using a high-pressure ram on the bales after their wires have been cut and removed, over-compressing the bales and then after relaxing the over-compression, restrapping the recompacted bale through a set of strap guides which are automatically adjusted in the direction of the press stroke to guide the strap around the recompacted bale regardless of the amount of over-compression of the bale.

Abstract: Spaced, opposed plywood sheets having kerfs in their peripheral edges are integrally joined by S-shaped aluminum bars that join the edges of the plywood sheets to form panels. Each bar is provided with spaced, elongated splines that interfit into the kerfs and are adhesively bonded therein. The bars are welded together to form an integral border frame. Each S-shaped bar includes an outwardly facing groove or protrusion and a duct joined by a common wall. The top bar and one side bar of the border frame are turned end for end relative to the bottom and opposite side bars so that the duct of a bar forming a border frame of an adjacent panel will interfit into the groove of the bar forming the border frame of the first panel. In this manner a continuous wall of interfitting panels may be constructed. Various forms of bars are provided to interconnect other building components such as beams, windows, doors and the like, with the panels.

Abstract: A plurality of rows of vertically spaced discs are located on opposite sides of the path of movement of a shake blank as it is pushed along a cutting plane into the path of a bandsaw blade. The discs on each side of the cutting plane have respective radii either uniformly progressively increasing for a portion of their perimeters or uniformly progressively decreasing for a portion of their perimeters so that as the discs rotate they engage opposite side faces of the blank, advancing the blank in the cutting path and simultaneously skew the rearward end of the shake laterally of the cutting plane so that the shake blank is cut along a diagonal. The framework supporting all of the discs can be moved to simultaneously shift all discs laterally to accommodate cutting characteristics of a particular saw blade. Initial positioning of the forward end and final positioning of the rearward end of the blank for overly thick blanks is obtained by cam surfaces on the two rows of discs closest upstream of the blade.

Abstract: A system for linearizing, processing and displaying data received from a non-linear transducer. The system includes a keyboard for entering coefficients which characterize the transducer to adjust the system so that it matches the physical parameters of the transducer. The linearized data may then be processed to generate selected functions of one or more transducers before being displayed on a digital display. The system processes data in real time so that the displayed data is frequently updated. Self-monitoring circuits detect processing or operating errors in the system and generate an appropriate error indication. The system further includes means for preventing the loss of data from volatile memories in the system, as well as means for initializing the central processing unit to the first program instruction when power is removed from the system.

Abstract: A swing-away bunk is provided with a frame assembly having a mattress affixed thereto. The frame asssembly is suspended on a pair of pivotal sets of links which allow the mattress to swing against the rear wall of a truck cab in a vertical storage position and be pulled forward and upwardly into a horizontal position. Cam surfaces guide the rear end of the frame assembly forwardly and upwardly passed a rear support when the bunk is pulled into its horizontal position.