Abstract: An isolation valve including a main body including a fluid passage, a first port connected to the fluid passage, a second port connected to the fluid passage, a third port including an openable and closable valve, the valve connecting the third port to the fluid passage, and a plug removably coupled to the second port.

Abstract: An isolation valve including a main body including a fluid passage, a first port connected to the fluid passage, a second port connected to the fluid passage, a third port including an openable and closable valve, the valve connecting the third port to the fluid passage, and a plug removably coupled to the second port.

Abstract: A union nut is installed over a valve body between an outwardly flaring flange on a valve port and the valve itself. The union nut is uniquely characterized by installation threads cut into an inwardly flaring shoulder, and installation threads are also provided on the flange of the port. The shoulder can be screwed onto the flange until the union nut freely rotates about the port. A split ring is installed against a neck on the port, the neck being adjacent the flange, such that the union nut cannot threadedly engage the installation threads. The freely rotating union nut can be tightened into a suitable fitting that is part of a fluid system.

Abstract: A service valve assembly for a tankless water heater incorporates one or more features that provide safer operation and easier installation of a valve assembly. Installation of a valve assembly is facilitated by foreshortening all perpendicularly protruding ports, thereby increasing the rotational freedom during installation. A main valve and a drain valve are intentionally distinguished from each other by providing different port sizes, valve handles and valve shapes that change the overall shape and characteristics of the valve assembly in such a way that accidental opening a drain port becomes much less likely. Installation can further be simplified by using a unique union nut that allows a service valve to be easily connected to an existing tankless water heater.

Abstract: A signal from CW radar is received, and the received power detected by the CW radar's swinging in all directions is averaged in each direction. Then, the maximum value and the minimum value of the received power are detected for each direction, and the difference between the maximum value and the minimum value is computed. An average power value of obtained power is also computed. On a 2-dimensional plane on which the difference between the maximum value and the minimum value and the average power value are used for coordinate axes, slice processing is performed using a threshold indicated by a line graph or a curve.

Abstract: A signal from CW radar is received, and the received power detected by the CW radar's swinging in all directions is averaged in each direction. Then, the maximum value and the minimum value of the received power are detected for each direction, and the difference between the maximum value and the minimum value is computed. An average power value of obtained power is also computed. On a 2-dimensional plane on which the difference between the maximum value and the minimum value and the average power value are used for coordinate axes, slice processing is performed using a threshold indicated by a line graph or a curve.

Abstract: A scan type radar device capable of detecting a lateral position of a target even if a peak showing the lateral position of the target irregularly fluctuates in the lateral direction as well as reducing the mis-pairing. The former is achievable by changing a reference value of the lateral fluctuation of the target when all the past and present target data fluctuate to an extent exceeding the reference value. The latter is achievable by forecasting a representative peak position at this time in both of up-beat and down-beat from the peak position data at the preceding time and carrying out the past-correspondence grouping of the up-beat and the down-beat at this time in the vicinity of the position of the representative peak forecast this time; the pairing being carried out by using the representative peak calculated by the past-correspondence grouping.

Abstract: An unwanted peak occurring due to an antenna sidelobe and an unwanted peak occurring due to a harmonic are eliminated in a radar apparatus. A peak from a target that can cause an unwanted peak is found based on the intensity of the peak, and a search is made for a peak having a predetermined positional relationship with the thus found peak. If such a peak is located, then it is determined whether the peak is a candidate for an unwanted peak, based on the difference between the intensity of the peak and the intensity of the main peak. If both of the paired peaks are determined as being candidates for unwanted peaks, it is determined that the peaks are unwanted peaks.

Abstract: The invention detects a ghost occurring due to mispairing, reflections from a wall, or the like, and improves the ability of a radar to track targets when actual relative velocity changes by more than a certain value. If a stationary target is present within a prescribed region centered about a moving target, the stationary target is excluded from output data by determining it as being a target resulting from mispairing due to the detection of guardrail posts or similar structures. Further, a moving target that is expected to collide with an eligible target is also excluded from the output data by determining it as being a target resulting from mispairing due to the detection of a target having many reflecting points. For a moving target showing an unlikely relative velocity, pairing with some other peak is attempted by determining the moving target as being a target resulting from mispairing due to the detection of a plurality of moving targets moving in the same direction.

Abstract: The present invention relates to traveling control for a vehicle and, in particular, to a method and apparatus, in an adaptive cruise control (ACC) system for a vehicle, for correcting the curve radius of the lane on which the vehicle is traveling, wherein the curve radius is corrected accurately and speedily based on the information about the movement of a leading vehicle detected with a radar, etc. The apparatus, in the ACC system, for correcting the curve radius comprises a means of computing a virtual curve radius based on the information about the horizontal movement of the leading vehicle, a means of computing the horizontal relative position for the curve radius obtained by the ACC system and the horizontal relative position for the virtual curve radius, and a means for correcting the curve radius based on the value obtained by synthesizing the computed horizontal relative positions.

Abstract: The invention detects a ghost occurring due to mispairing, reflections from a wall, or the like, and improves the ability of a radar to track targets when actual relative velocity changes by more than a certain value. If a stationary target is present within a prescribed region centered about a moving target, the stationary target is excluded from output data by determining it as being a target resulting from mispairing due to the detection of guardrail posts or similar structures. Further, a moving target that is expected to collide with an eligible target is also excluded from the output data by determining it as being a target resulting from mispairing due to the detection of a target having many reflecting points. For a moving target showing an unlikely relative velocity, pairing with some other peak is attempted by determining the moving target as being a target resulting from mispairing due to the detection of a plurality of moving targets moving in the same direction.

Abstract: An unwanted peak occurring due to an antenna sidelobe and an unwanted peak occurring due to a harmonic are eliminated in a radar apparatus. A peak from a target that can cause an unwanted peak is found based on the intensity of the peak, and a search is made for a peak having a predetermined positional relationship with the thus found peak. If such a peak is located, then it is determined whether the peak is a candidate for an unwanted peak, based on the difference between the intensity of the peak and the intensity of the main peak. If both of the paired peaks are determined as being candidates for unwanted peaks, it is determined that the peaks are unwanted peaks.

Abstract: A scan type radar device capable of detecting a lateral position of a target even if a peak showing the lateral position of the target irregularly fluctuates in the lateral direction as well as reducing the mis-pairing. The former is achievable by changing a reference value of the lateral fluctuation of the target when all the past and present target data fluctuate to an extent exceeding the reference value. The latter is achievable by forecasting a representative peak position at this time in both of up-beat and down-beat from the peak position data at the preceding time and carrying out the past-correspondence grouping of the up-beat and the down-beat at this time in the vicinity of the position of the representative peak forecast this time; the pairing being carried out by using the representative peak calculated by the past-correspondence grouping.

Abstract: The present invention relates to traveling control for a vehicle and, in particular, to a method and apparatus, in an adaptive cruise control (ACC) system for a vehicle, for correcting the curve radius of the lane on which the vehicle is traveling, wherein the curve radius is corrected accurately and speedily based on the information about the movement of a leading vehicle detected with a radar, etc. The apparatus, in the ACC system, for correcting the curve radius comprises a means of computing a virtual curve radius based on the information about the horizontal movement of the leading vehicle, a means of computing the horizontal relative position for the curve radius obtained by the ACC system and the horizontal relative position for the virtual curve radius, and a means for correcting the curve radius based on the value obtained by synthesizing the computed horizontal relative positions.