49results about How to "Minimized size and weight" patented technology

A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition includes a voltage converter for converting electrical energy from an initial voltage to a final voltage, and a defibrillator electrically coupled between the converter and the patient and having an energy reservoir for receiving the electrical energy. The defibrillator produces preshaped electrical pulses such as defibrillation pulses and cardioversion pulses. The apparatus additionally includes an energy delivery controller electrically coupled to the patient and the converter and the defibrillator. The controller causes the converter to provide the electrical energy to the defibrillator at a specific charging rate in response to an energy level in the reservoir. The apparatus may include a plurality of electrodes interposed between the defibrillator and the patient and each electrode preferably has an impedance reducing means contained therein. One embodiment of the apparatus may include a H-bridge to produce a positive-going pulse segment and the negative-going pulse segment within the biphasic exponential signals. The apparatus periodically measures the energy as it is being delivered to the patient and can pre-emptively stop or truncate the pulse in the event an error condition is detected, such as an overvoltage condition or if the energy level approaches a predetermined level. The electrical components which store and release the energy minimize the size and expense of the apparatus, while isolating the microcomputer from the high energy levels as the therapeutic pulse is delivered.

An optical scanning module has a metal base, a first circuit board mounted across one end of the metal base and a second circuit board mounted orthogonal to the first circuit board. The metal base supports a light emitter for producing a scanning beam and serves as a heat sink for the emitter. A flexible support attached to the metal base supports a mirror for oscillating motion. The module includes a drive mechanism, typically in the form of a permanent magnet and electromagnet, for producing reciprocal motion of the mirror. A detector included in the module senses light reflected from an indicia scanned by the beam. A flexible electrical cable connects the circuitry on the first and second circuit boards so that circuitry operates together to produce all signals necessary for operation of the scanner module and to process the electrical signals from the detector. Preferred embodiments include a flexible support consisting of a planar spring located between the mirror and one of the magnets. The components of the module are dimensioned so that the weight of the magnet balances that of the mirror. The invention also encompasses systems for scanning the beam simultaneously in two orthogonal directions at two different frequencies. This bi-directional scanning can produce a raster scan pattern for reading two-dimensional bar codes, or this scanning can produce a moving zig-zag pattern for reading truncated bar codes.

A six degree of freedom force reflecting haptic interface includes three powered axes and three free axes, all of which are tracked so that the position of a user connection element in the work volume can be determined. The interface includes cable drives with polymer composite or metallic cables, automatic cable tensioning devices, and grounded actuator capstans. A nested hub and transfer drive provide a compact, weight balanced interface. User comfort and safety features are also provided.

A celestial compass kit. The kit includes an inclinometer, a camera system with a special telecentric fisheye lens for imaging at least one celestial object and a processor programmed with a celestial catalog providing known positions at specific times of at least one celestial object and algorithms for automatically calculating target direction information based on the inclination of the system as measured by the inclinometer and the known positions of at least one celestial object as provided by the celestial catalog and as imaged by the camera. The telecentric fisheye lens produces an image on the sensor located at or near the focal plane which remains spatially constant within sub-micron accuracies despite thermally produced changes in the focus of the lens.

A celestial compass with a sky polarization feature. The celestial compass includes an inclinometer, a camera system for imaging at least one celestial object and a processor programmed with a celestial catalog providing known positions at specific times of at least one celestial object and algorithms for automatically calculating target direction information based on the inclination of the system as measured by the inclinometer and the known positions of at least one celestial object as provided by the celestial catalog and as imaged by the camera. Preferred embodiments include backup components to determine direction based on the polarization of the sky when celestial objects are not visible.

A system and method for measuring oil level and quality is provided. The system and method uses an alternating current (AC) to determine oil level, and a lower frequency alternating current, or a direct current (DC), to measure oil quality. The system may comprise a single sensor that is used to measure both oil quality (by providing the lower frequency alternating current or direct current) and oil level (by providing the higher frequency alternating current). Using the lower frequency AC, or DC, enables the resistance of the oil to be determined, which gives an accurate indication of the oil quality.

The present invention relates to a device for converting a liquid feed stream to a gaseous vapor stream comprising: (a) channel means having a first and second end, said channel means having a plurality of channels connecting said first and second end, said channel means having a substantially solid region and a void region, (b) inlet means for directing the liquid feed stream to the first end of the plurality of channels, and (c) outlet means for directing the gaseous vapor stream from said plurality of channels, where said channels have, at any distance d between the inlet and outlet, a geometric configuration, perpendicular to the feed flow direction, wherein the average void fraction ranges from about 0.3 to about 0.95.

A balloon-mounted light source includes an array of LEDs mounted on, and cooled by, a balloon structure filled with a lightweight gas such as helium. The LEDs are preferably mounted in long series arrangements with small gauge wire to minimize weight. They may be mounted on heatsinks that are dispersed in a mesh-like structure over the balloon. The LED circuitry may also be mounted on flexible circuit boards, which may be porous to reduce weight. The balloon may include an envelope compartment with a leak-resistant seal or zipper to allow the interior of the envelope to be accessed, and a pressure relief valve. The envelope of the balloon may be clear in the front in order to maximize the projection of light but reflective along the back and sides as to minimize spill. The balloon may take the form of a controllable dirigible.

A reversible keyboard is attached, with the front or reverse side up, into a keyboard attachment recess equipped with a rubber key unit. This reversible keyboard comprises keytop members 51a, 51b for pressing down the rubber key unit 33 as well as a front key cabinet 52a and a reverse key cabinet 52b including holes 53a, 53b, respectively. The front keytop members 51a and the reverse keytop members 51b are respectively inserted in the holes 53a, 53b and project from the front key cabinet 52a and the reverse key cabinet 52b. In this state, the keytop members 51a, 51b are housed in the front key cabinet 52a and the reverse key cabinet 52b and allowed to move upwardly and downwardly.

A power transmission mechanism for a vehicle includes a clutch assembly which includes a two-way clutch and an electromagnetic clutch. The two-way clutch includes three rows of rollers retained by a retainer and disposed between a clutch inner member, which is actually a stem of a constant-velocity joint mounted on the outboard end of a drive axle, and a clutch outer member, which is actually a hub ring of a hub bearing supporting a vehicle wheel. Simply by energizing and deenergizing the electromagnet of the electromagnetic clutch, the two-way clutch can be engaged and disengaged. Since the rollers are arranged in three rows, it is possible to increase the contact area between the rollers and the clutch inner and outer members and thus the maximum torque that can be transmitted through the rollers without the need to increase the number of rollers in each row or their length or diameter.

A portable oxygen concentrator designed for medical use where the sieve beds, adsorbers, are designed to be replaced by a patient. The concentrator is designed so that the beds are at least partially exposed to the outside of the system and can be easily released by a simple user-friendly mechanism. Replacement beds may be installed easily by patients, and all gas seals will function properly after installation.

An intermediate image is formed inside the prism by a projection lens or the like, and since an image light that is totally reflected at three or more surfaces; at a third surface firstly, at a first surface firstly, at a third surface secondly, at the first surface secondly, and at the second surface in the order specified, transmits the first surface, and then arrives at an observer's eye, the size and weight of the prism can be reduced and it is possible to realize a display of high performance and brightness with a wide angle of view. In addition, since the external light can be observed after passing through the first surface and the third surface, and the visibility at that time becomes substantially zero, it is possible to reduce the defocus or distortion of the external light when observing the see-through external light.

An optical device has a tube including a tube wall defining a viewing bore. A light source is in communication with the viewing bore for illuminating an aim point visible in the viewing bore. A control system includes a circuit board supported by the tube exterior of the viewing bore. The control system is in communication with the light source for controlling brightness of the illuminated aim point. The control system includes a light sensor mounted to the circuit board and extending from the circuit board through the tube wall into the viewing bore for sensing light in the viewing bore.

A railway car drive system comprising a first railway car 1 mounting a power generation means 10, a power converter 20, a driving motor and a power storage means 50; a second railway car 2 mounting a power converter 20, a driving motor and a power storage means 50; and a power transmission means 40 connecting each said means; wherein said system further comprises a power management means 100 for controlling the generated power of the power generation means 10 and the power storage quantity of the power storage means 50, the power storage means 50 storing the power generated by the power generation means 10 and a regenerative power, the driving motor being driven via the power converter 20 using as power source the power generation means 10 and the power storage means 50 to thereby run the train.

The fluorescence detection device includes an illumination module and a detection module. The illumination module includes a light source and a first filter. The light source is configured with the first filter to pass a first light beam at a first particular bandwidth along a first optical axis for exciting a targeted fluorescent probe and generating a fluorescent light. The detection module includes a second filter and a photo-detector. The second filter receives the fluorescent light and passes a second light beam at a second particular bandwidth along a second optical axis. The photo-detector receives the second light beam at the second particular bandwidth and converts the second light beam at the second particular bandwidth to an electrical signal. The first optical axis is tilted from the second optical axis at a specific angle ranged from 4.5 degrees to 9.5 degrees.

A portable personal computer includes a portable casing and computer components supported therein. The portable casing includes a first panel, a second panel, and an edge connector foldably coupling the first panel with the second panel edge-to-edge. The computer components includes a screen panel sealedly and overlappedly mounted on the first panel, a CPU circuitry sealedly mounted on the second panel to electrically connect to the screen panel, and a keyboard panel sealedly mounted on the second panel to electrically connect to the CPU circuitry. Therefore, the portable casing is adapted to fold at the storage position that the first panel is spacedly overlapped on the second panel to form a receiving cavity therebetween so as to protect the computer components in the receiving cavity, and at the usage position that the first panel is upwardly folded at an angle with respect to the second panel.

A connector for connecting tent poles has a tubular body and a plurality of insert poles connected radially to the body and inserted into one end of the tent pole. A plurality of tap holes are formed along a periphery of the body at an interval and an external screw portion corresponding to the tap hole is formed on one end of the insert pole, so that the insert pole is screw-engaged to the tap hole. According to the invention, the tent poles are connected to the connector via the insert poles without being directly connected to the connector. Accordingly, it is possible to minimize the size and the weight of the connector and to prevent the tent pole from being damaged at the connection region with the connector when the bending stress is applied to the region.

The multi-channel fluorescence detection device includes an illumination module, plural heating chambers, a detection module and a transmission module. The illumination module includes at least one light source, plural different types of excitation filters, and a first rotational drum, wherein the light source provides a broad band illumination, each of the excitation filters passes light at a particular band width for exciting a targeted fluorescent probe, and the first rotational drum drives the excitation filters. The plural heating chambers are adapted for accommodating PCR tubes having samples and the targeted fluorescent probes. The detection module includes plural different types of emission filters, a second rotational drum and at least one photo-detector, wherein each of the emission filters passes light at a particular band width, the second rotational drum drives the emission filters, and the photo-detector receives fluorescent signals and converts the fluorescent signals to electrical signals. The transmission module includes an actuator connecting with the first and the second rotational drums to drive rotations of the first and the second rotational drum simultaneously for switching and synchronizing the excitation filters and the emission filters to match specific wavelengths of the targeted fluorescent probes.

A battery module includes a plurality of battery cells stacked together; first and second end plates located at a first end and a second end, respectively, of the stacked battery cells; and side plates and a bottom plate coupled to the first and second end plates, wherein at least one of the first end plate and the second end plate has a bent support portion that overlaps with at least a portion of the bottom plate.

The disclosure relates to a fluorescence detection instrument, including a base, a heating module, a detecting module, an illumination module, and an actuation module. The heating module, the detecting module, and the actuation module are disposed on the base. The heating module includes plural heating holders, wherein each of the plural heating holders is adapted to accommodate a light-transmissive reaction container adapted to contain a fluorescent reaction mixture with at least one targeted fluorescent probe respectively. The detecting module is configured with the heating module to form plural detection channels, wherein the plural heating holders are located at the plural detection channels respectively. The actuation module is connected with the illumination module and adapted to drive the illumination module to move to at least one predetermined position to selectively match at least one combination of the heating holder on the corresponding detection channel.