摘要:
A filter bag (1) for a filter device includes a tubular, flexible, air-penetrable filter body (6) provided with a suspension arrangement at an unfolded end thereof. The suspension arrangement includes a rigid ring element (7) with outwardly protruding members 10 annularly secured to the unfolded end of the filter body. The ring element (7) is arranged at least partially at an interior part of the filter body (6). Also a filter device including a housing with a dust chamber (4) and a clean-air chamber (5) that are separated by an partition wall (3) suspending at least one filter bag (1) as described above that extends through an opening (2) provided in the partition wall (3) with a main part of the filter body (6) located in the dust chamber (4). The ring element (7) of the filter bag (1) extends at least partially into the opening (2) in the partition wall (3).
摘要:
A filter bag (1) for a filter device includes a tubular, flexible body (6) provided with a suspension arrangement at an unfolded end thereof. The suspension arrangement includes a rigid ring element (7) annularly secured to the unfolded end of the filter body. The ring element (7) is arranged at least partially at an interior part of the filter body (6). Also a filter device including a housing with a dust chamber (4) and a clean-air chamber (5) that are separated by an partition wall (3) suspending at least one filter bag (1) as described above that extends through an opening (2) provided in the partition wall (3) with a main part of the filter body (6) located in the dust chamber (4). The ring element (7) of the filter bag (1) extends at least partially into the opening (2) in the partition wall (3).
摘要:
In the case of a transducer for the simultaneous measurement of different physiological quantities, with a measuring head which contains a transducer for measuring a first physiological quantity and a transducer having electrodes connectable with signal processing electronics for measuring a bioelectric quantity as a further physiological quantity, and comprises a contact surface by means of which it can be contacted with the human or animal body, it is provided for obtaining a reliable measurement of the heart potentials, particularly of a foetus at the time of birth, that one of the electrodes is arranged in such a way that, together with the contact surface, it comes into contact with the human or animal body, while a further electrode is located outside the contact surface of the measuring head.
摘要:
A rotary airlock valve has a plurality of material receiving pockets having leading edges that are narrower than the trailing edges thereof, preferably having walls tapering inwardly so as to define a narrowed pocket opening for directing any material expansion due to pressurization to a center of a discharge outlet, to reduce wear and increase seal life.
摘要:
The invention relates to a method and apparatus for controlling a three-phase inverted rectifier. In this method each half wave is divided into six intervals with the third and fourth intervals forming a first zone with a constant voltage level, the second and fifth intervals forming a second zone with impulses of varying width, and the first and sixth intervals forming a third zone with impulses of varying width narrower than the impulses in the second zone. The narrower and wider impulses are treated similarly with regard to their number and have a constant width ratio as the result of a factor X. The center spacings of the narrower and wider impulses are equal. The number of impulses in each of the zones two and three is n. When n is 1.5, X should be about 0.78. Apparatus for carrying out the method includes a cycle generator, a zone signal generator which may be a ring counter, a wave train generator which may be a voltage controlled oscillator, two pulse generators and a logic section which, in dependence on the zone signals and the impulse width signals, produces switching control signals for operating the switching element of the inverted rectifier.
摘要:
An air filter arrangement for an internal combustion engine, especially for a two-cycle engine in a manually guided implement such as a power saw, a cut-off machine, etc., and including an air filter element that delimits a first clean chamber. The air filter arrangement has an inlet opening for an air channel and an inlet opening for a mixture channel. A shield is provided for shielding the air filter element relative to the mixture channel. The inlet opening of the air channel and the inlet opening of the mixture channel are interconnected via the shield.
摘要:
A method for producing cardable, hydrophobic polyolefin-based staple fibers by applying to spun filaments a first spin finish comprising at least one cationic antistatic agent, in particular a quaternary ammonium salt, stretching the filaments, applying to the stretched filaments a second spin finish in the form of a dispersion comprising at least one hydrophobic lubricant selected from a fatty acid amide condensation product and a hydrocarbon wax, the second spin finish optionally further comprising a polydiorganosiloxane in an amount of up to 15% by weight, and crimping, drying and cutting the filaments to obtain staple fibers; as well as textured, cardable, polyolefin-based staple fibers prepared by the method and hydrophobic nonwoven materials produced from such fibers. The fibers are able to be carded at extremely high speeds and are particularly suitable for use in the preparation of thermally bonded hydrophobic nonwoven fabrics in which a dry, water-repellant surface which can function as a liquid barrier is desired, e.g., for disposable diapers, feminine hygienic products and medical products.
摘要:
The invention relates to a control unit for an inverted rectifier of the type having a constant DC voltage supply and a frequency settable by a frequency control signal. The main feature of the control unit relative to the invention hereof is the monitoring of the critical pulse spacings of the pulse generator output without the use of time-dependent elements. The control unit includes a voltage controlled oscillator for generating a triangular wave form controlled by a frequency control voltage. A variable width pulse generator is fed by the triangular wave form and is controlled by a pulse width control voltage. The control unit includes an analog computer for generating internally thereof a function which corresponds to the spacing of the pulses of the pulse generator. The computer includes an amplifier having a noninverting input for receiving a control signal which corresponds to the amplitude of the triangular wave form. The inverting input of the amplifier receives a combined signal corresponding to the frequency control voltage and the pulse width control voltage. The output of the computer is a digital signal which occurs when a critical predetermined value of the computer generated function is reached.
摘要:
A carburetor assembly includes a carburetor (9) wherein a section of an intake channel (10) is configured. A throttle element and a choke element are pivotally journalled in this intake channel (10). A first coupling element is fixedly connected to the throttle element so as to pivot therewith and a second coupling element is fixedly connected to the choke element so as to pivot therewith. The first and second coupling elements form a blocking arrangement which prevents an engagement of the choke element when the throttle element is not actuated.
摘要:
A ring-shaped air distribution disc (11) for an air distribution device for providing rinsing air to an air cleaner provided with filter bags is provided. The ring-shaped air distribution disc (11) has a width that slightly exceeds the diameter (d) of at least one aperture (2) for rinsing air. In use the ring-shaped air distribution disc (11) is suspended in a free floating manner in the air distribution device, and is pressed against sealing means (5) of a number of rinsing air tubes (4) by springs (15) supported by a supporting plate (8) positioned underneath the ring-shaped air distribution disc (11).