摘要:
A ground drilling device comprising a housing, a lengthwise movable drilling head tip arranged in the housing, and a bearing for supporting the drilling head tip in the housing during its lengthwise movement.
摘要:
A pressure sensor may comprise a socket, an upper CB, a lower CB, and a hex housing. The socket may include a plurality of co-molded electrical pin conductors extending axially from electrical connectors defined within a top end of the socket for receiving an external electrical cable to a bottom end of the socket. A top side of the upper CB may have electrical contacts configured to contact the electrical pin conductors. The lower CB may be connected to the upper CB by at least one structural member, and electrically coupled to the upper CB and to strain gauges coupled to a diaphragm. The hex housing may have an interior axial port extending from a bottom of said hex housing to a counterbore for holding the diaphragm, thereby exposing a first side of said diaphragm to the fluid within the axial port.
摘要:
A system for selectively inserting and/or extracting an electronics module into and/or from a receiving system. The system includes a lever configured to rotatably attach to a portion of the receiving system. The lever is rotatable between a first position corresponding to an at least partially uninstalled position of the electronics module with respect to the receiving system and a second position corresponding to an installed position of the electronics module with respect to the receiving system. The lever includes a first bearing surface configured to engage with and apply a force on a portion of the electronics module when the lever is rotated in a first direction, and a second bearing surface configured to engage with and apply a force on a portion of the electronics module when the lever is rotated in a second direction.
摘要:
A gangway floor for a gangway between a first car of a multi-car vehicle and a second car of said vehicle comprises a first floor panel and a second floor panel, wherein the first floor panel is arranged to rotate about a first axis that does not lie in the plane that the first floor panel lies in, and the second floor panel is arranged to rotate about a second axis that does not lie in the plane that the second floor panel lies in, wherein the first axis is different from the second axis.
摘要:
A blade mounted radar system comprises a wind turbine having a hub and blades extending therefrom; a radar antenna configured to transmit and/or receive a radio frequency (RF) signal; and a processor in electrical communication with the radar antenna and configured to generate the RF signal for transmission and/or to process the received RF signal. The radar antenna is affixed to one of the blades of the wind turbine such that relative motion is defined between the radar antenna and a target within a line of sight of the radar antenna. The problem of the ground based radar line of sight being obscured by the wind turbine is mitigated in this setup, as radar and turbine coexist in the same structure. Improved performance and additional capability are enabled by elevated installation and vertical SAR imaging capability. Doppler capabilities are extended using known motion of the antenna relative to stationary objects.
摘要:
A low density accelerometer includes a buoyant outer layer and a rigid hollow housing within the outer layer. The housing includes an upper member and a lower member and is configured to form a groove at the junction of the upper and lower member. A disk shaped sensing element configured in a ring defining an aperture is configured to engage the groove along an outer edge of the annular ring. A solid proof mass is configured to fit in the center of the annular ring and configured with a threaded bore on an upper surface of the proof mass. The mass is secured to the sensing element by a retainer such as a Belleville washer in contact with the upper surface of the sensing element circumferentially about the aperture and a threaded fastener passing through the retainer and the aperture in the sensing element, and threadingly engaging the threaded bore in the proof mass.
摘要:
A pressure sensor 100 may comprise a nylon socket 200, an upper PCB 320, a lower PCB 340, and a hex housing 400. The nylon socket 200 may include co-molded electrical pin conductors 230a, 230b, 230c extending axially from electrical connectors 240a, 240b, 240c defined within a top end of the nylon socket 200 to a bottom end of the nylon socket 200. The upper PCB 320 may have contacts configured to contact the electrical pin conductors 230a, 230b, 230c. The lower PCB 340 may be electrically coupled to the upper PCB 320 and to strain gauges 355 coupled to a diaphragm 360. The hex housing 440 may have an interior axial port 430 extending from a bottom of said hex housing 400 to a counterbore 440 for holding the diaphragm 360, thereby exposing a first side of said diaphragm 360 to the fluid within the axial port 430.
摘要:
An electronic structure includes a first area having silicon grains having a size smaller than 100 micrometers and a second area superposed to the first area and having silicon grains having a size greater than or equal to 100 micrometers. The first and second areas form a support. At least one layer of an epitaxial semiconductor material is disposed on the second area.
摘要:
A memory device is provided comprising a transistor having a floating body positioned between source and drain regions, the floating body being sandwiched between first and second insulated gates each comprising a gate electrode. A control circuit is arranged to program the state of said floating body to have an accumulation or depletion of majority carriers by applying one of first and second voltage levels between the first gate and at least one of the source and drain regions, and to retain the programmed state of said floating body by applying a third voltage level to the second gate. The voltages are switched over a time duration shorter than 100 ns.