Abstract: There is provided a printer that functions as a droplet ejecting apparatus including: a tank which is configured of at least a part having light transmission property; a tank cover which functions as a cover portion that covers the tank; and a light transmitting portion which is provided at least at a part of the tank cover, and through which liquid accommodated on the inside of the tank can be visually confirmed, in which at least one of gradations and reference marks is provided in the light transmitting portion.

Abstract: In conventional liquid jet apparatuses, improvement in usability is desired. A liquid jet apparatus including a liquid jet head, a liquid container that can store liquid, a housing that covers the liquid jet head and the liquid container, and an operation unit can be operated by a user, a liquid injection port that enables liquid to be injected is formed in the liquid container, when the operation unit is viewed from the front, the first liquid container is arranged between the operation unit and one side wall of the housing, and the second liquid container is arranged between the other side wall opposite to the one side wall of the housing and the operation unit, the housing includes a first cover that covers at least a portion of the first liquid container, and a second cover that covers at least a portion of the second liquid container, and the first cover and the second cover are independently configured to be openable/closable relative to the housing.

Abstract: There is provided a printer that functions as a droplet ejecting apparatus including: a tank which is configured of at least a part having light transmission property; a tank cover which functions as a cover portion that covers the tank; and a light transmitting portion which is provided at least at a part of the tank cover, and through which liquid accommodated on the inside of the tank can be visually confirmed, in which at least one of gradations and reference marks is provided in the light transmitting portion.

Abstract: In conventional liquid jet apparatuses, improvement in usability is desired. A liquid jet apparatus including a liquid jet head, a liquid container that can store liquid, a housing that covers the liquid jet head and the liquid container, and an operation unit can be operated by a user, a liquid injection port that enables liquid to be injected is formed in the liquid container, when the operation unit is viewed from the front, the first liquid container is arranged between the operation unit and one side wall of the housing, and the second liquid container is arranged between the other side wall opposite to the one side wall of the housing and the operation unit, the housing includes a first cover that covers at least a portion of the first liquid container, and a second cover that covers at least a portion of the second liquid container, and the first cover and the second cover are independently configured to be openable/closable relative to the housing.

Abstract: A time-series waveform of tire vibration detected by an acceleration sensor is windowed by a windowing unit, time-series waveforms of the tire vibration are extracted for respective time windows, and feature vectors of the respective time windows are calculated. Then kernel functions are calculated from the feature vectors of the respective time windows and road surface feature vectors, which are the feature vectors for the respective time windows calculated from the time-series waveform of the tire vibration obtained for distinctive road surface conditions calculated in advance. And the road surface condition is determined by comparing values of discriminant functions using the kernel functions. As a result, the road surface condition can be determined from the time-series waveform of the tire vibration without detecting peak positions or measuring the wheel speed. Moreover, robustness against changes in tire size can be added to the determination of the road surface condition.

Abstract: A time-series waveform of tire vibration detected by an acceleration sensor is windowed by a windowing means, time-series waveforms of the tire vibration are extracted for respective time windows, and feature vectors of the respective time windows are calculated. Then kernel functions are calculated from the feature vectors of the respective time windows and road surface feature vectors, which are the feature vectors for the respective time windows calculated from the time-series waveform of the tire vibration obtained for distinctive road surface conditions calculated in advance. And the road surface condition is determined by comparing values of discriminant functions using the kernel functions. As a result, the road surface condition can be determined from the time-series waveform of the tire vibration without detecting peak positions or measuring the wheel speed. Moreover, robustness against changes in tire size can be added to the determination of the road surface condition.

Abstract: A method, featuring robustness against changes in tire size, is provided for determining a road surface condition by dividing a time-series waveform of tire vibrations into windows without resorting to detection of the peak positions or measurement of the wheel speed. A time-series waveform of tire vibrations detected by a tire vibration detecting unit is windowed by a windowing unit. Time-series waveforms are extracted from the respective time windows, feature vectors X are calculated therefor, and then likelihoods Z for road-surface HMMs (hidden Markov models) are calculated. The likelihoods Z1 to Z5 calculated for the respective road-surface HMMs are compared with one another, and a road surface condition corresponding to the road-surface HMM showing the highest likelihood is determined to be the condition of the road surface on which the tire is running.

Abstract: A speedup device or valve means comprises a check-valve disposed in an oil passage connected with the rod-end chamber of a double-acting cylinder for preventing working oil from returning toward a tank only, a circulation valve provided in the upstream of said check valve, said circulation valve being usually urged by a spring to block communication between the oil passages connected with the rod-end and the piston-end chambers, respectively, said circulation valve being designed to move against the spring so as to connect the oil passages with each other in response to the pressure rise in the return oil from the rod-end chamber when said double-acting cylinder is in its rod-extending motion, causing the return oil from the rod-end chamber to shift into the piston-end chamber through a variable restriction, and a circuit set up in a portion of said circulation valve for allowing a portion of the return oil from the rod-end chamber to return to the tank through a variable restriction and a restriction passage

Abstract: A hydraulic control circuit system comprises first and second double-acting cylinders, a hydraulic pump for supplying the double-acting cylinders with pressure oil, and directional control valves respectively associated with the cylinders for controlling the supply of pressure oil to the latter. The hydraulic control circuit system has a circuit for independently operating the individual cylinders and also a circuit for causing the rod advancing and retracting actions of the first cylinder to be followed by the rod advancing and retracting actions of the second cylinder. The system is applied to the hydraulic control circuit of, e.g., a front loader for controlling a hydraulic cylinder used for lifting and lowering the loader arm and another hydraulic cylinder used for turning the bucket pivotally connected to the free end of the arm.