A pulse tool, especially a nutsetter, comprises a pulse unit including a hydraulic cylinder driven by a motor, and a driven shaft supported in the hydraulic cylinder. Two seal rollers are supported in radial grooves of the driven shaft. The rollers are power-operated towards the inner wall of the cylinder. The seal rollers are simultaneously in contact only in a single rotary position of the cylinder with seal strips that project relative to the inner wall of the cylinder so as to produce an ang...

A pulse counter is provided in which the value displayed for the detected value is highly reliable. An SN condition detecting means detects the SN condition of a pulse wave signal (step S201). The SN condition detecting means then determines whether or not the detected SN condition is good based on a specific threshold value (step S202). When a determination is made that the SN condition is good, a display control signal to display the pulse rate on a display means is output to a display method ...

It is an object of the present invention to provide a pulse combustion method and a valveless pulse combustor in which the strong sound wave energy and the combustion gas generated by explosions in the combustion chamber are effectively used for drying of a substance with no waste of sound wave energy and heat of the combustion gas. A pulse combustion method according to the present invention is characterized by a step of pushing the sound wave energy and the combustion gas which flow toward the...

A glucose sensing apparatus and method includes an electrocatalytic sensor having a reference electrode and a sensing electrode. A periodic signal is comprised of a ramp voltage which is intermingled a series of square wave measurement pulses. This signal is applied to the sensor. Current levels are sampled twice during each measurement pulse, and a signal indicative of glucose level is derived therefrom. After completion of a measurement, a reactivation, signal is applied to the electrode to re...

A hybrid type pulse motor, whose thickness in a direction perpendicular to its rotary shaft is less than that of a conventional pulse motor, comprises a rotor which has teeth formed around the peripheral surface of a cylindrical rotor core of a soft magnetic substance at a fixed pitch; a stator is disposed at either side of the rotor; each stator has 2n magnetic poles, each having wound thereon a coil and facing the rotor; these magnetic poles are arranged in the order to first, second, . . . an...

A pulse generator having a gear and an actuating member. The actuating member is made from insulating material. It is movable sideways and is forced against the gear by a compression spring, which also serves as a detent spring. This forces a projection into engagement with a tooth space in the rest position. The pulse generator is especially suited for producing current and voltage pulses for digital tuners.

The present invention provides a relatively compact-sized pulse combustor which efficiently reduces an undesirable explosion and combustion noise without any bulky muffler. In the pulse combustor of the invention, a compensating sound is generated in an exhaust conduit synchronously with pulsative explosion and combustion. The compensating sound has a sound pressure identical with that of a noise in the exhaust conduit but a phase opposite to that of the noise, thus effectively compensating the ...

The invention provides an improved valve-less pulse combustor including a plurality of combustion systems and one common air supply system, wherein the air supply system includes an air supply controller which interferes with air supply to a combustion system under non-combustion conditions so as to effectively prevent a cooking medium in a tank of the combustion system from being cooled by the air supplied. The air supply controller may be a solenoid valve or a damper using a solenoid or a moto...

A damper in a self-contained electrically operated fuel pump for vehicle engines incorporating a positive displacement pumping element. The damper has a hollow toroidal flexible element in contact with the liquid fuel discharged from the pump for absorbing pulsations. A retainer with a locating plate on one side of the damper centers it in the pump housing and has resilient circumferentially spaced, radial fingers extending over and around the periphery of the toroid to confine it against destru...

A improved pulse oximeter comprises first and second light-emitting diodes that apply red light and infrared light, respectively, to a living tissue including the arterial blood, a photodiode for detecting optical outputs as produced after the red and infrared light of two wavelengths issuing from light-emitting diodes have been absorbed by the living tissue, a first computing unit that computes the ratio between the pulsating components of light absorbance .PHI. for the two wavelengths due to t...