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222results about "Weighing apparatus" patented technology

Apparatus for dispensing pressurized contents

Containers for incrementally dispensing pressurized contents are described. The containers comprise a vessel suited to contain pressurized contents, a port integral with the vessel and through which pressurized contents contained in the vessel can be released from the vessel, preferably incrementally in approximately equal amounts, and a measuring device disposed in or otherwise associated with the vessel such that the quantity or amount of contents in the vessel can be measured or assessed. The measuring device senses ambient conditions in the vessel and, directly or with other components, indicates, for example, the amount of pressurized contents remaining in the vessel and displaying it to an observer. With appropriate ancillary components, the measuring device also enables the amount of contents actually released from the vessel during a particular actuation to be compared to a theoretical constant. Also, additionally, the devices of the invention may also include time logging capability (alone or in conjunction with the capability to log other data) the actuation of the dispensing valve for comparison to a prescribed method. Accordingly, devices for incrementally dispensing pressurized contents from such containers are also described. Such devices further comprise a metering value for dispensing pressurized contents from the vessel. In preferred embodiments, each actuation of the metering valve results in release of a pre-determined quantity of the vessel contents. For example, in embodiments wherein the pressurized contents comprise a therapeutic composition, the instant devices include improved Metered Dose Inhalers (MDIs) for delivery of predetermined doses of a therapeutic composition to a patient, wherein the MDIs provide for sensing of the amount, for example, of the therapeutic composition remaining in the vessel after each actuation of the metering valve.
Owner:SCHECHTER ALAN M +1

Calculating method of ice concentration of transmission line

The invention provides a computing method of ice concentration of a transmission line. The method comprises the following steps: the wire temperature and the elastic dependent variable in the fixed span of the transmission line are measured through a fiber grating measuring system; the total dependent variable in the fixed span of the transmission line is obtained according to the wire temperature and the elastic dependent variable; the wire specific load in the fixed span of the transmission line is obtained according to the total dependent variable and the wire specific load is compared with the wire self specific load in the fixed span of the transmission line; if the wire specific load is higher than the wire self specific load, the additional load in the fixed span of the transmission line is calculated; and the ice concentration in the fixed span of the transmission line is obtained according to the additional load. The invention overcomes the problem of higher measuring result error caused by lower measuring accuracy and poorer anti-electromagnetic interference capability due to the adoption of an electric parameter measuring method for measuring stress, temperature and inclination angle in the prior art.
Owner:STATE GRID CORP OF CHINA +1

Method for creation of planar or complex wavefronts in close proximity to a transmitter array

An apparatus and method for generating an electromagnetic environment in which the free field, plane wave response of electronic systems of an electrically large (greater than several wavelengths in its longest dimension) object, or objects, under test can be measured in the electromagnetic radiating near field of the transmitter array apparatus. The apparatus comprises: (1) one or more transmitting station(s), each station home to an array of radiating elements; (2) a software operating system and computer that controls the electronic circuits of the apparatus and executes an optimizing algorithm based on a Genetic Algorithm to control the radiation of each transmitting station; and (3) mechanical and electrical circuits that enable the apparatus to conduct self calibration and adjustment as required. In operation, the apparatus is placed and distributed about an object under test. With input from an operator, an optimization procedure based on a Genetic Algorithm determines the magnitude and phase of each radiating element, of each transmitting station. The apparatus then creates an electromagnetic environment that couples to sensors through small apertures distributed about the object under test, and causes the electronic behavior of electronic systems of the object under test to mimic their response to a true free field, plane wave environment.
Owner:DONALD E VOSS D B A VOSS SCI
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