摘要:
In a light distribution lens for a strobe provided in front of a strobe light emitter to gather strobe light, one of opposed lens surfaces is made of a convex surface, and the other lens surface is made of a convex Fresnel surface. A zoom strobe device is also disclosed, which includes a light emitter unit having a light emitter and a reflector, a light distribution lens provided in front of the light emitter unit to gather light emitted from the light emitter, and a zoom device for varying the distance between the light emitter unit and the light distribution lens.
摘要:
A suction cup includes a suction cup main body, an attachment surface and a gel layer. The surface of the gel layer serves as a suction surface. In a method of manufacturing a suction cup, a cavity is formed in the inside of a common mold and a primary mold. Next, a synthetic resin material is injected into the cavity, to mold the suction cup main body. Subsequently, the primary mold is opened, to obtain the suction cup main body. Next, a secondary mold is mated to the common mold, whereby a cavity is formed in the inside of the common mold and the secondary mold. Subsequently, a gel is injected into the cavity, to mold the gel layer. Next, the secondary mold is opened, to obtain a suction cup composed of the gel layer and the suction cup main body, on the common mold.
摘要:
A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.
摘要:
In a signal measurement device, a plurality of mixers output a signal having a frequency equal to a difference between two input frequencies, and a single local signal source feeds a common local signal input to the plurality of mixers. A difference measurement unit measures a level and a phase difference between outputs of the plurality of mixers if a common correction signal input is fed to the plurality of mixers, and a level/phase measurement unit measures the level and the phase of the output of the plurality of mixers if inputs of signal to be measured common in frequency are fed to the plurality of mixers. A difference correction unit corrects a measurement result of the level/phase measurement unit based on a measurement result of the difference measurement unit if a common input of signal to be measured is fed to the plurality of mixers.
摘要:
Embodiments of valve operating mechanisms for operating the poppet valve of an internal combustion engine. Each embodiment includes a rotating cam member having a cam lobe surface engaged with a follower for actuating the poppet valve. The profile of the cam surface is such so that the absolute value of the jerk of the valve acceleration in the vicinity of maximum valve lift is smaller than the absolute value of the jerk of the valve in areas adjacent to the area of maximum valve lift. The load between the cam surface and the follower at the point of maximum lift is greater than the load during the time of at least one of the approach to maximum lift and the closing of the valve after the maximum lift because the tip of the nose of the cam has a greater effective radius than on the sides adjacent the tip. This reduces stress and permits greater engine speeds without valve float.
摘要:
A door unlock control system detects collision to a vehicle and executes door unlocking. The type of collision to the vehicle is determined. The order of execution of door unlocking is determined based on the type of collision. Door unlocking is then executed based on the order of execution.
摘要:
An exhaust control drive arrangement for an internal combustion engine for varying the exhaust port timing and effective compression ratio. The exhaust control valve is driven by a servomechanism mounted directly on the cylinder block at one end of the engine and adjacent the flywheel so as to provide a compact assembly.
摘要:
A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.
摘要:
A multi-port device analysis apparatus is capable of analyzing a multi-port device having three or more with improved efficiency and accuracy. The multi-port device analysis apparatus includes: a signal source (112) for providing a test signal to one of terminals of a multi-port device under test (DUT); a plurality of test ports (P1-Pn) for connecting all of the terminals of the multi-port DUT to the corresponding test ports; a plurality of measurement units (MU1-MUn) for measuring signals from the corresponding test ports; a reference signal measurement unit (R) for measuring the test signal for obtaining reference data; a plurality of terminal resistors (TR1-TRn) each being assigned to one of the test ports; and switch means (SW1-SWn) for selectively providing the test signal to one of the test ports (input port) and disconnecting the terminal resistor from the input port while connecting the terminal resistors to all the other test ports; wherein parameters of the multi-port DUT are acquired without changing the connections between the test ports and the terminals of the DUT, while changing selection of the test port until all of the test port being assigned as the input port.
摘要:
A method for controlling the start of combustion in an homogeneous charge compression engine includes forming an substantially homogeneous air/fuel charge. At least the air of the air/fuel charge is introduced into the combustion chamber through an intake port. When the air/fuel charge auto-ignites is controlled by adjusting the pressure differential between the intake port and the combustion chamber when the intake passage is in communication with the combustion chamber. The air/fuel charge is compressed and the air/fuel charge is auto-ignited due to the compression of the air/fuel charge.