Abstract: A cutter wheel which can form a deep slit on an article to be cut so that the article can be broken easily along the slit and a perpendicular cut surface can be formed reliably when the article is broken along the slit. The cutter wheel is a disk-shaped member having a cutting edge along the outer edge and formed with a mounting hole extending therethrough along its axis. The mounting hole has an irregular shape so that the cutter wheel vibrates when it rolls due to steps between adjacent sides of the polygonal hole. The edge of the wheel can thus penetrate more deeply into the glass plate so that a deeper and smoother slit can be formed in the glass plate. This in turn makes it possible to more easily break the glass plate along the slit and to form a perpendicular cut surface.

Abstract: A low-frequency electrotherapeutic device can overcome problems ascribable to tolerance in neural response and problems ascribable to accumulation of electric charge in a living body, thereby affording a comfortable massaging effect. Each electrode can be designated as a different electrode or as an indifferent electrode by a controller. Electrodes do not assume a fixed paired structure, and the path of stimulating electric current is changed at predetermined intervals by scanning electrodes serving as different electrodes. The path of an electric current flowing on the skin of a living body can be changed in various ways, the number of which corresponds to the number of paths connecting the electrodes. Consequently, it becomes possible to freely select a desired electric current path or a desired combination of electrodes in accordance with a program stored in a control section (CPU) incorporated in the controller. Also, it becomes possible to automatically change the combination at predetermined intervals.

Abstract: A method for controlling changes in stimulation of every sort and kind including electrical stimulation, utilizes a three-dimensional 1/f fluctuation. The method is a change control method for controlling changes in stimulation to an object using a three-dimensional 1/f fluctuation and includes the steps of causing changes based upon 1/f fluctuation periods in the X-Z plane of a X-Y-Z space, causing changes based upon 1/f fluctuation periods in the X-Y plane of the space, superposing the caused changes of the previous steps, and applying the superposed caused changes to the object. This makes it possible to realize a low-frequency device free of problems attributable to the tolerance in neural response. A recording medium used to store the change control method, and a change control device using a three-dimensional 1/f fluctuation are also disclosed. Changes based on 1/f fluctuation periods in the X-Z plane and changes based on 1/f fluctuation periods in the X-Y plane are superposed on each other.

Abstract: A system for measuring the motion amount of laboratory animals includes a main body having a single central processing unit installed, a single frame set to surround an animal in a bounded area, optical sensor light-emitting elements and optical sensor light-receiving elements disposed on opposite sides of the frame. The optical sensor light-emitting elements sequentially emit optical beams such that the light-emitting elements do not simultaneously emit optical beams, the optical beams being received by corresponding light-receiving elements when the emitted optical beams are not obstructed so as to detect the location and movements of the laboratory animal.

Abstract: An apparatus and method for measuring the motion amount of a laboratory animal. The apparatus includes a main body having a central processing unit therein, and a first and a second frame set to surround a laboratory animal in a bounded area. Each frame includes an optical sensor light-emitting element and an optical sensor light-receiving element. The optical sensor light-emitting element is disposed so as to oppose the optical sensor light-receiving element. The optical sensor light-emitting elements on the first and second frames sequentially emit optical beams such that the light-emitting elements do not emit optical beams at the same time. The light-receiving elements on the first and second frames receive those emitted optical beams which are not obstructed by the laboratory animal so as to detect the location and movements of the laboratory animal. According to the method, the movement amount, complete standing actions, and incomplete standing actions of the laboratory animal are measured via.

Abstract: A sucker for suctioning and lifting a sheet of plate glass has a sucker body defining a suction hole at a suction surface of the body. The sucker body carries a manual vacuum pump formed with a suction hole, a sensor for detecting the degree of vacuum and a sound generator. The sensor is provided in a suction channel connecting the suction hole at the suction surface of the sucker body with the suction hole in the vacuum pump. The sound generator is turned on when the sensor detects a predetermined degree of vacuum.