Abstract: A system for warming blood or other liquids to body temperature for infusion into a patient. The system includes a blood warmer apparatus having a pair of closely spaced apart heat transfer plates, each of which forms one face of a housing containing flat vapor condensation heating units. A flat disposable heat exchanging blood warming envelope is held clamped between the heat transfer plates. The envelope is provided with an air escape vent covered by a hydrophobic filter eliminating the need for a vent separate check valve. An air heating unit in one of the apparatus housings includes a cool air inlet, heat transfer fins on the walls of the vapor condensation heater unit, a fan and guides for conducting air past those fins and a warmed air outlet. An external elongated insulated air hose is connected at one end to the warmed air outlet and extends to the patient.

Abstract: A scraping implement that can be quickly coupled and uncoupled to a conventional self-propelled snowblower for the removal of snow from a driveway or sidewalk. Drop pins releasably hold the frame of the implement to opposite sides of a snowblower housing. The implement has a concave curved plow mounted on a frame for angle adjustments. A bolt extends through a swivel plate and the frame to hold the plow at the selected position. The frame is laterally adjustable to fit different sized snowblowers.

Abstract: An improved aircraft altitude approach control device is characterized by both visible and audible indications of changes in the aircraft altitude as the aircraft descends to a landing. A transducer is provided on the aircraft which produces an output signal corresponding to the altitude of the aircraft. The output signal is converted to a digital signal and then to an analog voltage signal. A voltage controlled oscillator produces an audio frequency signal whose pitch corresponds with altitude. A further characteristic of the invention is the provision of a memory circuit in which a digital signal corresponding to a preferred landing is stored. This signal can be modified to produce a preferred or reference analog voltage signal. The actual and reference voltage signals are delivered to a glide slope meter which indicates differences therebetween. Thus, a pilot can gauge his landing approach relative to the reference or preferred landing approach.

Abstract: An apparatus to recondition used ammunition cartridge cases in order that they can be reloaded and reused. A stand includes a base and an upright column. A plurality of bearing sleeves are located in the column disposed about parallel horizontal axes. A plurality of tool holders have shafts that are rotatably assembled in the column. The tool holders carry cartridge case reconditioning tools of the type that operate upon a cartridge case upon rotation with respect to it. The tool holder shafts are interconnected by circular gears. The rotation of one shaft results in rotation of the other shafts. A crank is connected to one of the shafts for rotation of all of the shafts. One of the cartridge case reconditioning tools is for deburring the inside mouth of the case, another is for deburring the outside mouth of the case, and a third is for cleaning the primer pocket.

Abstract: A sanitary material moving pump having a ram mounted for rreciprocal movement in a pumping chamber. An elongte tubular housing is connected at one end to the ram for purposes of reciprocal movement of the ram to move material through the pumping chamber. A piston shaft is mounted in stationary relationship relative to the pumping chamber in alignment with the design pumping axis of the pumping chamber. The end of the housing opposite the ram extends outward of the pumping chamber and is installed on the working end of the piston shaft. A piston is mounted on the inside end of the piston shaft. Hydraulic fluid lines communicate with opposite sides of the piston to reciprocate the housing on the piston shaft and the ram in the pumping chamber. Apparatus is provided for correctly adjusting the alignment of the hydraulic power unit to be as coincident as possible with the design pumping axis of the machine.

Abstract: A disposable syringe for dispensing a metered dosage of a material includes a plunger rod which is axially movable within a syringe barrel for dispensing the material. The plunger rod includes a rail section located axially outside the syringe barrel, and a slidable stop member is secured to the rail section for adjusting the volume of material to be dispensed. The adjustable stop member includes a knife edge for embedding into a surface of the rail section of the plunger rod to lock the stop member in a desired position.

Abstract: An ankle brace for constraining movement of the lower leg and foot about the normal horizontal axis of rotation of the ankle while inhibiting other rotation or extension or retraction movement about abnormal axes or in abnormal directions in order to help prevent injury to the ankle joint. The device includes a U-shaped leg member positionable in straddling relationship to the ankle joint and fixable to the lower leg. An ankle member is connected by a sliding pivot to the U-shaped leg member and is engaged with respect to the foot to hold the foot and lower leg together for movement about an arcuate path described by the sliding pivot joint.

Abstract: A vacuum grain moving apparatus connected to a three-point hitch of a tractor and operated with the power take-off drive of the tractor. The apparatus has a grain holding tank connected to a grain collection hose used to carry grain and air to the tank. An air moving unit mounted on the tank has a rotatable power driven impeller that draws air from the center of the chamber of the tank to provide a vacuum pressure within the tank. The impeller has first and second generally radial blades that pump the air from the tank chamber. An auger conveyor operatively associated with the lower end of the tank moves the grain from the tank into a transport vehicle. The auger conveyor has a driven helical auger located within a tube. The tube extends beyond the outer end of the auger and retains a plug of grain in the tube to inhibit back flow of air into tank chamber during the running of the air moving unit. A swinging gate pivotally mounted on an outer end cap normally closes the exit opening of the tube.

Abstract: A device operable to electrically stimulate living tissue, including body organs, muscles and nerves. The device can be applied to the surface of the body or implanted in the body. The device has an electrical circuit containing a pulse width control for variation of the stimulus intensity, pulse repetition rate, and on-time of the pulse to vary the pulse width. A variation in pulse width causes the stimulus variation of the stimulus intensity in a prescribed mathematical manner so as to approximately follow the curves of the strength-duration pulse stimulus amplitude versus pulse width. This provides for an optimal selection among the various classes of stimulated nerve fibers within a nerve tract or bundle. A precise adjustment of stimulation can be achieved so as to optimize sensation of pain relief.

Abstract: A top unloading silo unloader pendantly supported in a tower silo. The unloader has a material collector moved around the silo with drive structure. An impeller receives material from the collector and throws the material into an out chute which directs the material to a doorway leading to an upright passageway. The drive structure mounted on the outer end of the collector has leading and trailing drive wheels connected with movable mounts to a leveling apparatus. Power is applied to both wheels by separate drive shafts connected to the power transmission for the augers of the collector. The leveling apparatus has a base secured to the collector. Supports pivotally mounted on opposite ends of the base are attached to the mounts for the wheels. A linear actuator connected to the supports operates to concurrently pivot the supports in opposite directions so that the outer end of the collector can be raised or lowered and held in a selected position.

Abstract: A portable display unit for display of advertising material or other informational or decorative material on changeable display cards and for storage of other display cards. The display unit includes a rectangular box-like housing convertible between a collapsed or closed and portable configuration and an erect or a display configuration supported on a stand. At least one wall of the housing is comprised as a removable panel to expose a picture type frame surrounding a viewing area to be filled by the display card to be viewed. A retractable handle is provided for transport of the unit from place to place in the collapsed or closed configuration.

Abstract: The method and apparatus for controlling particulate emissions from a combustion apparatus, as a diesel engine. Diesel engine exhaust particles are electrically charged during the formation of the particles in the engine combustion chamber. A particle collector is used to collect the electrically charged particles on collecting structures connected to a high voltage power supply and ground. The collecting structures of the particle collector can be a plurality of parallel metal plates, spaced cylindrical rods, or concentrically located cylindrical members. A fibrous matrix can be located adjacent the particle collecting structure to collect the charged particles as they move through the matrix. In one embodiment, the collected particles separate from the collecting structures and return to the engine intake. In another embodiment, a removable collecting cartridge has electrically conductive plates for collecting the charged particles. The entire cartridge is removed for cleaning or replacement.