摘要:
A gas detection device employs a tunable wavelength laser, modulated about an absorption line of a gas to be detected. By measuring the ratio of the fundamental to the second harmonic of the modulation frequency, the detection is independent of the optical path length. This permits an aimable device in which a laser beam is directed toward a remote surface, reflected thereby, and the reflected beam focused upon a detector. The presence of the gas to be detected in the space between the device and the reflective surface is thereby determined.
摘要:
A livestock holder, for example, for castrating operation of pig, includes a pair of holding means driven by a drive means. The livestock is securely held at its body between both of the holding means in a desirable condition.
摘要:
A web cutting control system controlling the speed of a rotary cutter for automatic, continuous and precise cutting of a web fed at a constant speed into predetermined lengths or on the marks on the web. Two transducers generate pulses the number of which corresponds to the web feed length and the rotating angle of the rotary cutter, respectively. Three sensors detect the marks on the web, the completion of cutting, and the arrival of the cutter blades, respectively, to control the flow of signals. A desired cutting length or the distance between the mark detection point and the point of completion of cutting is preset. A reversible counter receives the pulses from these two transducers and the difference signal between the preset value and a reference signal and performs reversible counting thereof, the result of which is used to control the speed of motor for the rotary cutter to bring its speed into synchronization with the web feed speed for accurate cutting.
摘要:
An oscillator (12) of a low-frequency therapeutic apparatus (10) is controlled by a frequency control device (18) to generate a plurality of frequencies selected according to the kind of a disease and these frequencies are delivered from the lowest in an ascending order at intervals of a specified time, and are injected into a human body at the same time or separately as low-frequency electric currents from a therapeutic electrode (14) and an inactive electrode (16), as electromagnetic waves from oscillating coils (14) and (14A), and as acoustic waves from an acoustic wave oscillator (62) and a body sonic apparatus (64).
摘要:
A web cutting control system controlling the speed of a rotary cutter for automatic, continuous and precise cutting of a web fed at a constant speed into predetermined lengths or on the marks on the web. Two transducers generate pulses the number of which corresponds to the web feed length and the rotating angle of the rotary cutter, respectively. Three sensors detect the marks on the web, the completion of cutting, and the arrival of the cutter blades, respectively, to control the flow of signals. A desired cutting length or the distance between the mark detection point and the point of completion of cutting is preset. A reversible counter receives the pulses from these two transducers and the difference signal between the preset value and a reference signal and performs reversible counting thereof, the result of which is used to control the speed of motor for the rotary cutter to bring its speed into synchronization with the web feed speed for accurate cutting.
摘要:
According to the present invention, the types and the stages of the ovarian disorders or the presence of pregnancy may be diagnosed from the results of measured sodium ion concentration on vaginal mucosa and change therein, based on the impedance value between the electrodes 14 and 14 on the vaginal mucosa, while compressing the electrodes 14 and 14 on the vaginal mucosa in mammals.
摘要:
A rotary shaft is inserted to a tank through a hole formed in a wall of the tank. A casing is provided outside the tank, and the rotary shaft is supported by a bearing arranged in the casing. The casing is watertightly connected to the wall including the hole through a flexible joint. Seal members are arranged in the casing to seal the clearance between the rotary shaft and the casing. A sleeve is fitted on the rotary shaft so that the sleeve is watertightly in contact with at least one of the seal members, and the sleeve can be moved along the rotary shaft to change the seal member in contact with the sleeve. The bearing and the seal member are not affected by the deformation of the tank since the flexible joint connects the tank and the casing, and the rotary shaft can rotate smoothly while securing high sealing quality. The alignment of the axes of the bearing and the hole in the tank can be easy since the bearing is provided outside of the tank, and thus assembly and maintenance of the structure are easy. The tank can have relatively low strength since the tank has not to support the rotary shaft with the bearing; thus the structure can be compact and the cost can be reduced.
摘要:
An oscillating unit (12) of a low-frequency therapeutic apparatus (10) is controlled by a frequency control device (18) to generate plural frequencies chosen from the frequencies determined in advance according to the disease of interest, and these frequencies are delivered from the lowest in an ascending order at specified time intervals.