摘要:
A stackable and nestable chair (10) includes a seat assembly (12), a pair of rear legs (20) spaced apart by a first distance, and a pair of front legs (16) spaced apart by a second distance different than the first distance. The front legs (16) and the rear legs (20) mutually connected by a crossbar (24), and the seat assembly (12) is supported by the crossbar (24) when the seat (12) is in an operable position. A plurality of casters (30) are each attached to a bottom of each of the front and rear legs (16, 20), wherein each caster (30) includes a notch (1051) that is configured to couple with a leg of an adjacently stacked chair (10).
摘要:
The disclosure provides an antenna device (1), which includes a waveguide antenna (20) having wall surfaces and for emitting a radio wave in a direction substantially perpendicular to an emission face that is one of wall surfaces of the waveguide antenna extending in an elongated direction of the waveguide antenna, a plate-shape two-dimensional opening slots for beam formation formed in the waveguide antenna on the emission face side, a power feed waveguide module (30, 50) arranged in the rear face of the waveguide antenna opposite from the emission face and for supplying electric power to the waveguide antenna, and a cylindrical radome (10) having a substantially circular cross-section of a diameter that is substantially equal to a length of the emission face in a direction perpendicular to the long-side direction so that the waveguide antenna is contained in the radome so as to be arranged at substantially the centre of the radome.
摘要:
An aramid paper is made from aramid fibrids and short fibers both as main constituents and formed into a paper shape. The aramid paper has two sides and a surface and includes a thermal bonding face formed on at least one of the sides of the aramid paper, the thermal bonding face having such a property as to be directly thermally bondable with a material of another sheet of aramid paper of the same material or a polyester film at a thermal bonding temperature ranging from 90ºC to 200ºC when the surface of the aramid paper is treated by a low-temperature plasma treatment.
摘要:
An improved method for manufacturing tube and fin heat exchangers that, according to a preferred embodiment, includes a process for increasing the stiffness and rigidity of heat exchanger fins. Stiffer fins have a greater tendency to maintain proper alignment within a stack of fins, which aids in lacing long stacks of fins with small ( e.g., 5 mm) diameter tubing. Preferably, fin stiffness is increased by forming a plurality of longitudinal ribs within the fin during the fin stamping process. More preferably still, two ribs for each longitudinal row of collared holes are provided. The preferred embodiment also includes a slotted heat exchanger fin that is dimensioned and arranged for optimized thermodynamic performance when used with small diameter tubing, thus reducing the space required for a given heat exchanger system.
摘要:
An axial flux rotating electrical machine is disclosed, which comprises a stator (10) sandwiched between two rotors (12, 14). The machine comprises retention means (30) for retaining magnets on the rotor, the retention means comprising a back plate (32) with a plurality of protrusions (34) which define a plurality of pockets for accommodating the magnets. The retention means is arranged such that the magnets can be inserted into the pockets and held therein, and the retention means with inserted magnets can be fixed to a rotor so as to retain the magnets axially and tangentially. A cooling jacket (22) for the stator, and techniques for securing the stator to the machine, are also disclosed.
摘要:
An optical connector comprises a first block having a channel for accommodating a first set of optical cables aid a second block having a channel for accommodating a second set of optical cables. Each block has three protrusions, each adapted to be engaged to a respective one of the three protrusions from the other block in an end-to-end fashion aid having a channel for accommodating one of the optical cables. The connector further comprises a spring biasing the two blocks to maintain the end-to-end engagement a longitudinal direction between the protrusions three spacers. The connector also includes limiter disk having three slots arranged in a Y-pattern, each slot width-wise closely fitting an opposing pair of the protrusions. The limiter disk thus constrains the relative shifting or rotation between the two blocks in any direction transverse to the longitudinal direction. The connector further includes a fastener attached to the two blocks for securing the two blocks together. A kinematic support is thus provided for stable optical connection across an optical connector.
摘要:
Disclosed is a satellite navigation/dead-reckoning navigation integrated positioning device with improved accuracy of navigation data including position, velocity, and the like, which can be constituted at low cost. A tracking processing module (31) performs, base on a GPS positioning signal, acquisition processing and tracking processing thereof and demodulation processing of a navigation message. A GPS positioning calculation module (32) calculates position, velocity, and the like based on a pseudo-range observation, a Doppler frequency observation, and ephemeris data and gives the calculated position, velocity, and the like to an output judgment module (43) and the tracking processing module (31). Based on external support information including output of an inertial sensor, map information or information about the difference between a map position and a measured position, and the like in addition to the pseudo-range observation and the Doppler frequency observation, an integrated positioning calculation module (42) estimates the position, velocity, and the like, and gives the estimated position, velocity, and the like to the output judgment module (43). The output judgment module (43) compares the outputs of the GPS positioning calculation module (32) and the outputs of the integrated positioning calculation module (42) to judge the reliability of output data from the integrated positioning calculation module (42) and the abnormality of external support data.
摘要:
Presented are systems, apparatuses, articles of manufacture, and methods for identifying information about a particular entity including receiving electronic documents selected based on one or more search terms from a plurality of terms related to the particular entity, determining one or more feature vectors for each received electronic document, where each feature vector is determined based on the associated electronic document, clustering the received electronic documents into a first set of clusters of documents based on the similarity among the determined feature vectors, and determining a rank for each cluster of documents in the first set of clusters of documents based on one or more ranking terms from the plurality of terms related to the particular entity, where the one or more ranking terms contain at least one term from the plurality of terms for the particular entity that is not in the one or more search terms.
摘要:
Systems and methods are described for applying digital rights management techniques to tethered devices. In one embodiment, a host device is operable to translate a relatively sophisticated license into a simpler format for use on a relatively low-capability device. In another embodiment, a method of using extended SCSI commands to communicate over a USB connection is provided.