An angular velocity sensor device includes a switch (S1) for selecting a first or second driving signal mutually opposite in phase applied to driving electrodes (D1, D2) to oscillate a weight part (8) in a first direction. An adding circuit (29) adjusts the amplitude of the driving signal selected and adds it to a monitor signal reflecting the oscillating state of the weight part (8). A noise signal component appearing in the output signal of the adding circuit (29) is adjusted to a minimum and ...

A retaining device (1) for ventilation tubes (5) has two gripping jaws (2, 3), which can be locked into each other by means of a rack (11). The lower gripping jaw (3) can be attached to a stretcher via a bracket (6).

A fluid connector for providing an inlet/outlet connection to a connecting grid of a heat exchanger is disclosed in which the connector has a tubular body formed with an integral outwardly directed flange by means of which a fluid tight connection to the connecting grid can be achieved. The flange may be sealed relative to an aperture in a plate of the connecting grid. Alternatively, the aperture may be provided with a structural ring and the flange sealed relative to the structural ring for ada...

An evaporative scent burner comprises a bottle, which is used to accommodate the essential oil, with its top provided with a bottle mouth, a gypsum evaporative base, with its bottom provided onto the bottle mouth of above-mentioned bottle and its top designed with an enlargement surface, a braided wire, which head is connected to the gypsum evaporative base while the bottom of the braided wire will fall inside the bottle to absorb essential oil. The advantages of the present invention include: A...

A turbine nozzle includes airfoil and sidewall surfaces. The airfoil and sidewall surfaces have profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Tables I IV for the pressure and suction sides of the airfoil, and the outer and inner sidewall surfaces, respectively. The X, Y and Z values are distances in inches. The X and Y values for the airfoil, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profil...

A controller for high torque, low RPM wind turbines and ocean current turbines. The turbine consists of a large, input power shaft-mounted, rotating bull-gear with stationary powertrains mounted around its periphery. The gear teeth on the bull-gear rotate past the teeth on pinions, causing the pinions to turn and delivering power to each smaller powertrain. A controller regulates torque experienced by each powertrain to assure that torques are balanced between generators at any given system load...

A capacitor in an implantable medical device is provided. The capacitor having an anode, a cathode including a conductive coating, and an electrolyte disposed and in contact between the anode and the cathode. The conductive coating is composed of a chemisorbed conductive layer that is interposed between a metal substrate and a layer including a mix of activated carbon with a metal-oxide and electrolyte disposed and in contact between the anode and the cathode.

A horizontal and tuning fork vibratory microgyroscope is provided for detecting angular velocity and angular acceleration of an inertial object when the inertial object is rotated, wherein resonance directions of the microgyroscope are on the same horizontal plane in both sensing and driving modes. The microgyroscope includes a substrate, an anchored pad unit, an outer elastic element unit, an outer frame, a sensing electrode unit, an inner elastic element unit including a plurality of inner ela...

A piston engine in the form of a piston pump or a piston engine (motor) comprises two or more piston cylinders (14b, 14c), preferably positioned with the same angular distances of 180 degrees for two cylinders, 120 degrees for three cylinders etc. with regards to an axis, and each comprising a reciprocating piston with a projecting piston rod (18b, 18c). Via the piston rods (18b, 18c), each piston is given a controlled displacement matched to the controlled, given displacement of another or othe...

A belt type infinite variable-speed drive using a ball-screw mechanism is compact and noise-free. A nut of the ball-screw mechanism is fixed to a casing and a threaded shaft is rotatably coupled to a movable pulley member through a ball bearing so that ball circulating portions on the nut will not rotate while the movable pulley member is movable axially. Also, the ball circulating portions, which are low in load bearing capacity, are oriented in such a direction that a load hardly acts on the b...