39results about How to "Limited service life" patented technology

The invention discloses a preparation method for commercial vanadium battery electrolyte. According to the preparation method, vanadium electrolyte is prepared by one step through a chemical method; the preparation method comprises the following steps: dissolving raw materials containing vanadium by using an alkali; adjusting a pH (Potential of Hydrogen) value by acid-alkali regulation; repeatedly precipitating the vanadium to remove impurity elements; then roasting to obtain an oxide of the vanadium; finally, dissolving the oxide of the vanadium by using concentrated sulfuric acid to obtain the vanadium electrolyte. With the adoption of the method, impurities including iron, chrome, silicon, manganese and the like can be removed effectively and a process flow is shortened; the vanadium yield is improved, the impurity content is reduced and the process flow is shortened; the product purity can also be improved. The preparation method for the commercial vanadium battery electrolyte has important meanings on production technology levels and market competitiveness of the vanadium electrolyte; the method has good economic benefits and social benefits.

A chip includes a memory that stores confidential data, a power supply device to apply a voltage and/or or a current, and an interface to transfer the data from and/or to another device. To secure the data in the memory, the power supply device is an integrated component of the chip. The power supply device is equipped with a limited, non-replenishable fuel reservoir so that data can be maintained in the memory over a limited service life. In other embodiments, voltage provided by the power supply device can also be employed actively to delete data in the memory in the event of unauthorized access to the chip.

An image forming apparatus includes: at least one retaining member configured to temporarily retain remaining developer remaining on a photosensitive member; a belt arranged opposite to a plurality of photosensitive members; a cleaning device collecting developer on the belt; a remaining developer collecting unit configured to cause the remaining developer retained by the retaining member to be transferred onto the belt via the photosensitive member and thereafter collected by the cleaning device; a circulation mechanism configured to circulate developer between the development chamber and the developer storage chamber; a detector detecting the amount of developer in the developer storage chamber; a determination unit configured to determine if the amount of developer in the developer storage chamber is less than a predetermined amount; and a notifying unit notifying to replace a developer receptacle when the amount of developer stored in the developer storage chamber becomes less than the predetermined amount.

A method and a system for destruction of an undesirable formation in a mammalian body are described. The invention is based on inserting a probe into mammalian body; said probe is electrically connectable to a control unit and upon bringing the probe in physical contact with the formation supplying pulses of energy from the control unit to the probe in order to destroy the formation. The invention further comprises counting amount of pulses being supplied to the probe and establishing a remaining service life of the probe by subtracting the amount of pulses being supplied to the probe from an amount of pulses corresponding to initial service life of the probe. The treatment session is automatically terminates as soon as amount of pulses being supplied to the probe approaches at least a fraction of the established remaining service life of the probe. The established remaining service life of the probe is stored for new treatment session. Delivery of pulses automatically terminates when the remaining service life is exhausted and use of such probe becomes impossible.

A lift belt (12) for a lift installation comprises a belt body (15) in which a tensile carrier arrangement (14) with several tensile carriers (14.1, 14.2) for transmission of a tension force in longitudinal direction of the lift belt is arranged. A profile body (16) which spaces these tensile carriers from one another is arranged between adjacent tensile carriers (14.1, 14.2) of the tensile carrier arrangement (14). <SDOCL LA=EN> 12 Claims 1. Lift belt (12) for a lift installation, with a belt body (15) in which a tensile carrier arrangement (14) with several tensile carriers (14.1, 14.2) in the form of strands or cables for transmission of a tension force in longitudinal direction of the lift be lt is arranged, characterised in that a profile body (16) is arranged between adjacent tensi le carriers (14.1, 14.2) of the tensile carrier arrangement (14) and spaces these tensil e carriers from one another. 2. Lift belt according to claim 1, characterised in that a respective profil e body (16) is arranged between several, preferably between all, tensile carriers of the tensile carrier arrangement (14). 3. Lift belt according to claim 2, characterised in that all profile bodies (16) have the same cross-sectional shape. 4. Lift belt according to claim 2, characterised in that at least two profil e bodies (16) have different cross-sectional shapes. 5. Lift belt according to any one of the preceding claims, characterised in that a profile body has a substantially circular, oval (16.1), T-shaped, double-T-shaped (16.3), U- shaped, triangular or quadrangular (16.2) cross-section. 6. Lift belt according to any one of the preceding claims, characterised in that a profile body extends in longitudinal direction ofthe lift belt (12), particularly substantially over the entire lengthof the lift belt. 7.

A fuel accumulator block is provided for testing high-pressure components of fuel injection devices. The fuel accumulator block includes an accumulator body and at least one pressure control valve, which is accommodated in a receptacle in the accumulator body. The accumulator body is connected to a test line for a test medium and to a cooling line for a cooling medium. Within the accumulator body a test line run is developed for the test medium and a cooling line run is developed for the cooling medium. The cooling line run has at least one section which runs in the vicinity of the receptacle for the pressure control valve.

The invention discloses a wind bell type friction nano-generator and a manufacturing method thereof, which belong to the technical field of self-energy supply. The wind bell type friction nano-generator includes a packaging chamber and a swing unit arranged in the packaging chamber. The packaging chamber is provided with an air vent thereon and an electrode therein. The electrode includes electrode layers oppositely arranged on the two inner surfaces of the packaging chamber. The swing unit includes a swing film and a friction film. One end of the swing film is connected with the top of the packaging chamber, and the other end is connected with the friction film to drive the friction film to swing. The friction film can contact the electrode layer during swing. The weak wind energy in theenvironment or the micro energy of human respiratory airflow can be fully converted into electrical signals and output, and the problem that the existing friction nano-generator is limited in usage scenario and cannot collect small wind energy is solved.

An electrically driven pump includes a first housing and a second housing, and the first housing and the second housing are fixed to form an impeller chamber for receiving an impeller. The second housing and a rear housing are fixed to form a first receiving chamber for receiving a motor assembly; and the motor assembly includes a stator and a rotor, the rotor is arranged in an inner cavity enclosed by the stator, and the rotor drives the impeller to rotate. An electronic control unit is cooperated with the motor assembly, and the electronic control unit controls the operation of the motor assembly. The electrically driven pump includes a cooling passage for accommodating a working medium, and the working medium in the cooling passage may exchange heat with the electronic control unit, thereby facilitating improving the service life of the electrically driven pump.

The invention relates to a method for detecting wear in a frictionally locking clutch (50) or a frictionally locking brake (2, 40), the clutch (50) or the brake (2, 40) having at least one electrically excitable coil (4) and at least one element (20, 21, 23) which can move in rotation about an axis (3), to bring about frictional locking with at least one corresponding mating element (22, 28, 54), at least the element (20, 21, 23) which can move in rotation or the corresponding mating element (22, 54) being axially movable, and it being possible to form an airgap (26). The wear (46) can be inferred by virtue of the fact that the electric current is measured by the electrically excitable coil (4), evaluated and the evaluation compared with at least one reference value.

A device selected from among a glass furnace and a channel for dispensing the glass comprising a block and/or a coating made of a sintered material obtained by sintering a particular mixture comprising a chromium oxide content, indicated as “CrT”, of between 10% and 82%. The die fraction is such that 0.39·(CrT)+24<CrM<0.39·(CrT)+52, CrM denoting the chromium oxide content by weight of the die fraction in wt % on the basis of the oxides of the die, and the aggregate is such that xII≧97%, xIII≧70%, and xIV≦xIII−70%, CrG denoting the chromium oxide content by weight of one grain in wt % on the basis of the oxides of said grain.

The invention provides film transfer equipment, a transfer plate assembly and a transfer equipment adsorption force control device. The film transfer equipment comprises a transfer plate used for transferring a film layer to a base plate for the film layer to be transferred, and a base station used for bearing the base plate. The film transfer equipment further comprises an adsorption force control unit, wherein the adsorption force control unit acts on at least one of the base plate and/or the transfer plate in the transferring process so as to increase the difference between first adsorption force of the base plate to film forming matter transferred out from the transfer plate and second adsorption force generated by the transfer plate to the film forming matter. The film transfer equipment, the transfer plate assembly and the transfer equipment adsorption force control device can reduce residue and particle phenomena in the transferring and film forming processes through a simple and low-cost method.

A universal joint assembled in a drill string transfers torque between two components where the shafts of the components are not completely aligned. The universal joint includes two members each with pin connections on one end and axially extending arms on the other end. The axially extending arms intermesh when the members are assembled defining a closed cavity between the arms. The cavity retains a ball bearing held between two seats. The universal joint when assembled to portions of the drill string at the pins on each end transfer torque by intermeshing of the teeth. Axial force is transferred through the seats holding the ball bearing.

The invention is applicable to the technical field of software, and provides a software package certificate protection method and device. The method includes checking a self-signed software package to acquire a check value and self-signing time which is recorded when the software package is self-signed, matching the check value with a signature value which is recorded when software is self-signed, acquiring current time if the check value and the signature value are equal, rejecting installation otherwise, and determining whether to allow installing the software package or not according to the self-signing time and the current time. Therefore, service life of the self-signed software package is limited, market circulation capability of the self-signed software package is controlled, and application of pirated software is prevented.

A control box includes a shell, a display hole, an active member, an indicating member and an interlinking member. The display hole is formed in the shell. The active member has a turn-on end and a turn-off end and is pivotally connected with the shell so as to seesaw. The indicating member is movably disposed in the shell and has a first identifiable portion and a second identifiable portion. The interlinking member is connected between the active member and the indicating member to drive the indicating member to move. Accordingly, when the active member seesaws under the effect of an external force, the indicating member is driven by the interlinking member to show the first identifiable portion or the second identifiable portion in the display hole.

A coated abrasive article (1) comprises a backing (3) having an abrasive coating (5) on one side, an attachment layer (7) on the other side of the backing, and a line of weakness (9) that does not penetrate the front face of the abrasive coating (5). The line of weakness, which may be formed using a laser beam, comprises a through-cut (11) in the attachment layer (7) and perforations (13) in the backing (3), and permits one part of the abrasive article (1) to be separated from another part. Alternatively, the abrasive article can be used in its original form.