摘要:
A small-size electromotor includes a stator and a rotor enclosed by a housing. In order to reduce weight and moment of inertia of the rotor and stator in the electric motor the rotor and the stator are formed of magnetic conductors assembled from iron sheets. The iron sheets are spaced from one another by layers of reduced magnetic conductivity, which may be layers of air or any other non-conductive material.
摘要:
An element firmly connected with the drive shaft of an injection pump is locked in a predetermined rotary position, corresponding to the supply onset, by a locking device before the mounting of the injection pump to the associated internal combustion engine, the locking being effected by means of a holding bolt embodied as a reversible part. The holding bolt, locked by a fastening means in a reception bore, engages a transverse groove on the end face, in a first mounting position, via a protrusion on the element firmly connected with the drive shaft, and thus establishes a form-locking connection which keeps the drive shaft in the predetermined rotary position. In a second mounting position of the holding bolt, where the transverse groove points outward, the rotary movement of the drive shaft is unhindered. By means of the locking device, an injection pump can be mounted on an engine in the correct association with the drive mechanism of the engine without additional expenditure being required for measurement and testing.
摘要:
A rotational body supported in a housing of the apparatus carries an angle indication marker, which serves as a signal trigger of a signal transducer secured in a positionally fixed manner relative to the housing of the rotational body. The signal transducer has a transducer body axially displaceably disposed in its transducer housing. This body is displaceable in the direction of its longitudinal axis in order to actuate a first contact switch, and is provided inside its other end face with a switch contact, cooperating with the angle indication marker, of a second contact switch. After the actuation of both contact switches, the angle indication marker is located in a predetermined rotary position, which is indicated in the associated test circuit and serves in particular to ascertain the supply onset position of the drive shaft of a fuel injection pump for internal combustion engines.
摘要:
To provide for efficient operation and recuperation of stored inductive energy in a pulse-operated motor, a preferably bifilar winding (20, 21; 20', 21') has its respective strands or filaments energized by complementary transistors (57, 58; 69, 75; 80, 81) which have reversely polarized free-wheeling diodes (59, 60; 80", 81") connected thereacross. A coupling capacity (47) is connected between the junctions of the respective transistors and the associated winding so that, upon turn-off of a transistor, as controlled by a rotor position sensor, such as a Hall generator (25), stored electromagnetic energy is coupled to flow through the free-wheeling diode of the transistor then to be connected, to be returned to a d-c source, such as a battery (34) or stored in a storage capacitor (45). The output signal from the rotor position sensor is in binary, high-low form, which can control the complementary transistors.
摘要:
An electrically operated device such as a duplicating machine has a recptacle for accommodating a fluid for the chemical treatment of sheet material and like objects. The receptacle may be in the form of a dip tank designed for passing sheet material therethrough. This dip tank is connected via a supply conduit to a storage tank and the supply conduit includes a pump controlled by an automatic charging and metering unit for supplying fluid to the dip tank. A drain conduit leading to the storage tank is connected to the dip tank. This drain conduit includes a solenoid valve for stopping or allowing the flow of fluid through the drain conduit.
摘要:
To optimize recording current flow, either for maximum signal output or for best linearity of a changing input signal with respect to output voltage, and provide for automatic optimization of the recording signal level, a ramp or sawtooth wave generator is connected to a recording head, the recorded signal is immediately read and differentiated and the differentiated signal is level detected, for example for zero level for maximum output voltage or for a predetermined level before substantial change of the differentiated signal has resulted, thus providing for optimum linearity, the optimum signal level--as desired--being stored in a memory and used to control the excitation current for subsequent excitation of the transducer heads by a data source.
摘要:
A wraparound carton with overlapping panels secured together by adjustable locking means to compensate for variations in the diameter of the articles to be wrapped. The locking arrangement comprises a locking tab struck from the outer lap panel and having a plurality of lateral projections along the side edges thereof so as to form wavy lines, and a locking aperture arranged in the underlying lap panel for receiving the locking tap therethrough and having side edges which converge toward the end edge of the associated lap panel. Also disclosed is a device for tightening the wrapper about the articles whereby the lap panels are pulled into overlapping relationship at a predetermined rate.
摘要:
A method for producing starch films comprises the following steps: preparing a mixture comprising starch and water, wherein more than 50 weight percent of the starch is present in the form of particles of granular starch; shaping the mixture to form a film in a shaping process; solidifying the mixture by increasing the temperature of the mixture during and/or after the shaping process by more than 5° C. Films produced by this method have starch particles bonded to one another. A device for performing this method comprises a shaping device for enabling shaping of the starch material to form a film, and has a heating device for performing a heat treatment for destructuring of the starch during and/or after the shaping.
摘要:
The invention relates to a process for the advantageous production of polymer mixtures with specific molecular weight distributions, having a quantitatively low short-chained proportion and substantially improved processing characteristics, the working up steps during or after the synthesis of the main portion of the polymer mixture being used to produce the mixture.
摘要:
Compositions and methods are disclosed for liquid storage of biological samples with recovery of substantially all biological activity and without refrigeration. Also disclosed are compositions and methods for automated storing, tracking retrieving and analyzing of such liquid-storable biological samples, including nucleic acids and proteins (including enzymes). RFID-tagged liquid-storable biological sample storage devices featuring liquid matrices are disclosed, as also are computer-implemented systems and methods for managing sample data.