The magnet roll according to the present invention comprises (a) first and second shafts rotatable around the same axis relative to each other; (b) a permanent magnet member fixed around the second shaft and having a plurality of magnetic poles extending along the axis of the second shaft on its outer surface; (c) a first flange member connected to the first shaft and rotatably supporting one end of the second shaft; (d) a second flange member rotatably supported by the second shaft; (e) a hollo…

A power amplifying apparatus for amplifying an input signal to drive a load, includes an amplifier for amplifying the input signal so as to generate an output signal for driving the load and a current/voltage converter for current/voltage converting the output signal generated by the amplifier and feeding back the converted voltage to the amplifier. The converted voltage is used to control the amplitude of the output signal which flows into the load. The power amplifying apparatus further includ…

A device for removing a collar coaxially fixed to a projecting end of a fastener axially extending through the surface of a substrate, the device comprising a jig having opposed base and top surfaces and a cavity open at the base surface and disposed to coaxially receive the collar when the base surface is disposed on the substrate, at least one drill bit bushing extending through the jig on an axis generally parallel to and spaced a predetermined distance from the axis of the cavity, the bushin…

An electromagnetic contactor includes an engaging portion formed on a side surface of its body and disposed below a coil terminal. An attachment is releasably attached to the body of the electromagnetic contactor. The attachment includes a casing containing an electric component, the casing having a resilient projection formed on a side surface thereof. The resilient projection is resiliently engageable releasably with the engaging portion. The attachment has a plate-like connecting element proj…

The apparatus of the present invention detects the resonant frequency of a vibratory member in contact with a fluid. The detection of the resonant frequency enables the device to be used to detect the density of a fluid which it is in contact with and thereby calculate the flow rate of the fluid. The vibratory member is mounted in a housing in such a way that the chambers on either side of the vibratory member have equal volumes. The fluid enters the device through a conduit and then divides int…

A logic level converting circuit for converting an ECL level signal to a CMOS level signal comprises complementary signal generating means and level shifting means. The complementary signal generating means generates complementary signals in response to the ECL level input signal and a first reference voltage. The level shifting means operates as a flip-flop circuit, and includes a first and a second PMOS transistors which are either conductive or not conductive in response to the relationship b…

A 1,4-dihydropyridine derivative having the formula (I): ##STR1## wherein R.sub.1 represents 2-(5,6-dihydro-p-dioxinyl) group, R.sub.2 represents a pyridyl group which may be substituted with one methyl group or ethyl group, and n is an integer of 1 to 4.

A radiation thermometer comprises a housing (1) within which is mounted a radiation detector system including a radiation sensor (2) positioned to receive radiation through a window (5) in the housing. The radiation detector system generates an electrical signal related to the sensed radiation. An optical signal generator (11, 14) is responsive to the electrical signal from the radiation detector system (9) and an internal housing temperature detector to generate a modulated optical signal whose…

In a patterning method according to this invention, a surface region of a resist layer is solution-retarded by a developer, and, then, the resist layer is patterned. Therefore, a desired shape of a side wall of the resist layer may be obtained by varying a solubility of the resist layer, with the result that a resist pattern with the side wall orthogonal to a surface of the substrate or the overhung side may be formed.

A chip for a magnetostatic wave device comprising; a base substrate consisting of a dielectric monocrystalline base plate and a ferrimagnetic monocrystalline film formed on the base plate; an excitation means for magnetostatic waves formed on the ferrimagnetic film when it is given a bias magnetic field and high frequency electric signals; and a reflection means to reflect the excited magnetostatic wave toward the center portion of the film before it reaches at end portions of the ferrimagnetic …