Mec Company Ltd.

Hitachi Industrial Equipment Systems Co., Ltd.

Yoshio Anzai

Takaichi Shimbo

Tomoo Suzuki

Yuya Ota

Haruo Sekine

Provided are a compressor and a monitoring system that can specify a cause of an anomaly of a sensed value of a sensor. A compressor () includes: a temperature sensor (A) that senses a temperature of a compressed air on a discharge side of a low-pressure-stage compressor body () and on an upstream side of an intercooler (); a pressure sensor (A) that senses a pressure of the compressed air on the discharge side of the low-pressure-stage compressor body (); a temperature sensor (B) that senses a temperature of the compressed air on an intake side of a high-pressure-stage compressor body () and on a downstream side of the intercooler (); a temperature sensor (C) that senses a temperature of the compressed air on a discharge side of the high-pressure-stage compressor body (); a controller () that decides whether or not an anomaly has occurred in sensed values of the sensors (A), (B), (C), and (A), and estimates a cause of the anomaly; and a display device () that displays the cause of the anomaly estimated by the controller ().

Compressor and monitoring system

A tape apparatus autostop mechanism including a head base for setting a driving apparatus in an operational mode; a lock plate that locks the head base at an operational position in response to movement of the head base; a sensor, attached coaxially to a fast forward gear always rotatable in synchronism with a reel base, following the fast forward gear under contact friction with the fast forward gear, the sensor being urged in a rotational direction of the fast forward gear by the contact friction with the fast forward gear; a swingable reset arm urged in one direction by torque of the sensor while the fast forward gear is rotating in right or left directions; a forward gear having an inner and an outer cam, for transmitting force to the reel base; a swingable reset arm arranged to contact the inner and outer cams and rotatably supported; and a reset spring that presses a kick arm, attached to the reset arm, against the inner and outer cams, whereby when the torque of the sensor disappears as the reel base stops, pressing force of the reset arm against the kick arm via the reset spring also disappears, a cam follower of the kick arm stays apart from the inner cam, the fast forward gear keeps rotating so that the cam follower of the kick arm abuts against the outer cam, causing the kick arm to swing, thereby pressing the lock plate to unlock the head base.

Autostop mechanism for tape driving apparatus

In an autostop mechanism in a tape recorder equipped with an urging member, a sliding member and a shut-off cam gear, the urging member is located on a bottom surface of a chassis and is formed by a wire spring member. The wire spring member has a proximal end portion shaped like a polygon slightly smaller than a diameter of a shaft of a take-up reel so as to provide urging force when fitted over the shaft of the take-up reel, a distal end extending toward the sliding member, and a midway portion bent at a predetermined angle to form a bent portion abutting against the sliding member in such a way that the urging force of the wire spring member and an action of the distal end of the wire spring member press the sliding member toward a center of the shut-off cam gear cam gear by regardless of the rotational direction of the take-up reel.

Autostop mechanism having a rotatable spring member

A lock mechanism for the clutch of a reel base of a tape recorder, which comprises a fast forward gear to be simultaneously engageable with or disengageable from a pair of upper and lower reel gears of the reel base equipped with a clutch function in accordance with the action of a head mount plate movable together with the reel base in such a manner that the fast forward gear is disengaged from the two reel gears of the reel base according to the forward movement of the head mount plate in a recording/reproducing mode, thus enabling the clutch function of the reel base, and the fast forward gear is simultaneously engaged with the two reel gears of the reel base according to the backward movement of the head mount plate in a fast forward mode or rewinding mode, thus locking the clutch function to disable the clutch.

Growing community of inventors

Tokyo, Japan

Yoshio Anzai