A pneumatically operated blind riveting apparatus includes an elongate mandrel having a stem and a head at the forward end thereof, and two pairs of alternately operable jaws associated with the mandrel, each of which serves to hold the mandrel when the other pair is open. One of the pairs of jaws constitutes an abutment for supporting a tubular blind rivet during a setting operation while the other pair of jaws is located rearwardly of the abutment jaws and is movable longitudinally of the mand...

Combustion apparatus having a combustion plate separating the mixing chamber from the combustion chamber, and a plurality of flow obstacles disposed above some of the flame holes of the combustion plate whereby a mixture of vaporized fuel and combustion air passed through the combustion plate is ignited, the collision of the mixture with the flow obstacles resulting in turbulent flow flame patterns. In addition, a wire net is disposed between the combustion plate and the flow obstacles for furth...

A modulating valve capable of shortening the operating time of the clutch and also preventing the generation of an impulsive torque in the clutch-transmitted power by discontinuously changing the rate of variation of pressure used for pressing together the frictional members of the friction clutch. In order that the force, acting upon the valve body of the pressure regulating valve, will vary discontinuously relative to time, a plurality of independently slidable pistons are provided so that a d...

A transceiver includes a time division receiving system which shares reception between a normal channel and an emergency channel. The normal channel is shared for a sufficient time to minimize loss of normal channel signal information while providing means for indicating reception of a signal on the emergency channel and displaying the reception by means of an indicator.

An improved method and apparatus for monitoring and studying blood clotting times are disclosed. The method includes the step of passing a direct current through a blood or plasma sample and observing the electrical resistance of the sample during the clotting process. The electrical resistance, when plotted against time, is found to form a sigmoid curve having distinct inflections which signify the occurrence of both gellation and fibrin cross-linking within the clotting sample. The apparatus o...

A system for supplying a liquid at constant pressure for use in a liquid chromatograph characterized by a pump having a cylinder and a piston reciprocably disposed therein for drawing liquid into and discharging liquid from the cylinder, wherein a tacho-generator is connected to an electric motor which is controlled by an automatic control circuit for detecting the hydraulic pressure in the cylinder having a differential amplifier therein, and in which a signal from the tacho-generator is fed ba...

Metal tubes are produced by extruding a hollow billet through an annular die opening defined by a die and a movable rod-shaped mandrel having a larger length than the tube to be produced, and by feeding the mandrel rod through the die together with the tube as it is being formed so that the tube as produced has the mandrel rod disposed therein along its entire length, whereby damage to the inner surface of the tube caused by scratching due to relative movement of the mandrel therewith is avoided...

A clutch disc, particularly for use in motor vehicles, having at least two different types of elastic means, such as coil springs and elastic members of rubber, for absorbing torsional vibrations of the clutch disc, wherein openings in which one of the two different types of elastic means are disposed are designed such that no elastic force will act in one of the torque transmitting directions of the clutch disc, whereby it is possible to eliminate abnormal noises which are generated during subs...

A series D.C. electric motor is employed for the drive of an electric car, the field winding of which is connected in parallel with the armature of the motor while a regenerative brake is being made. The field winding has its excitation controlled by means of a thyristor chopper which is connected in series therewith to hold the regenerative effect both safely and steadily.

A defogging glass plate includes an electric heating element, such as being made of conductive films or electric resistance strips for electrically heating the glass plate, and a sensor having a pair of electrodes which are arranged in parallel with a suitable gap and which are fitted on the surface of the glass plate, for automatically controlling the application of heat to the glass plate depending on the cloudiness or visibility thereof.