Abstract: An apparatus for holding an insertable part of an endoscope positioned in a combustion chamber of a reciprocating engine or rotary engine having ignition plug holes to observe the interior of the combustion chamber and an inspecting method are provided with a holding apparatus for stationarily holding the insertable part in the combustion chamber through a spark plug hole provided in the engine to insert a spark plug for a spark plug ignition into the combustion chamber.

Abstract: Disclosed is an industrial endoscope system having a rotary treatment member, attached to a hard top part at a distal end of an insertion unit, for effecting a treatment such as grinding by rotating this treatment member itself. The system includes a moving means for making a distal end of the treatment member movable in the axial directions of the insertion unit. This easily leads the treatment member to a target position via a lead-in port of an engine; or the treatment member can be set in a position suitable for the treatment.

Abstract: The present invention provides an improved method for producing compositional material for a low melting point metal casting equipment, wherein said composition does not cause large cracks during operation even if there is a reduction in its physical strength resulting from the non-use of reinforcing asbestos fiber.

Abstract: A pipe-inspecting apparatus having a self-propelled unit. The self-propelled unit comprises an elastic tube which has forward and rear ends, and into which a fluid is supplied and from which the fluid is discharged, a restriction member mounted on the elastic tube, for restricting an axial expansion of the elastic tube, a bias member for biasing the elastic tube in the axial direction thereof, first and second holding members coupled to the ends of the elastic tube, respectively, for holding the ends of the elastic tube to the inner periphery of a pipe being inspected, while the fluid is being supplied into the holding members, and releasing the ends of the elastic tube from the inner periphery of the pipe, while the fluid is being discharged from the holding members. An observation device is coupled to the self-propelled unit. A display device is connected to the observation device, for displaying the image scanned by the observation device.

Abstract: The present invention provides an improved method for producing compositional material for a low melting point metal casting equipment, wherein said composition does not casue large cracks during operation even if there is a reduction in its physical strength resulting from the non-use of reinforcing asbestos fiber.

Abstract: A plurality of engine ignition keys are provided provided with codes which enable each key owner or user to preselect a seat position and automatically achieve the same position upon re-entering the vehicle simply by inserting the key into the engine ignition.

Abstract: This endoscope system is provided with an endoscope and an image receiving apparatus to be fitted to the eyepiece part of this endoscope. The endoscope has an elongate insertable part, an objective optical system provided in the tip part of the insertable part, an eyepiece part provided on the rear end side of the insertable part and an image guide consisting of a fiber bundle transmitting the image formed by the objective optical system to the eyepiece part. The image receiving apparatus has an image receiving part of many pixels on which the image from the eyepiece part is formed. Further, the endoscope system is provided with a vibrating apparatus relatively vibrating the image formed on the image receiving part and the image receiving part. The image receiving apparatus is a television camera, co-viewing apparatus or electronic still camera.

Abstract: An endoscope apparatus for inspecting an object including an insertion section insertable into the object and having a distal end and a proximal end, an image guide arranged within the insertion section and having entrance and exit ends arranged at the distal and proximal ends of insertion section, respectively, an objective lens system arranged at the distal end of insertion section for forming an optical image of the object onto the entrance end of image guide, an eyepiece lens system arranged at the proximal end of insertion section for projecting the optical image transmitted through the image guide onto an observating position, a first piezo-electric bimorph arranged at the distal end of insertion section for vibrating the entrance end of image guide in a direction perpendicular to a longitudinal axis of the insertion section over a given distance, a second piezo-electric element arranged at the proximal end of insertion section for vibrating the exit end of image guide in the same direction and over the

Abstract: A bank of comparators is utilized to control a logic circuit which indicates proper system operation when measured hydraulic real motor control pressures are within normal limits for the current airspeed after hose deployment. Also, before such deployment, simulated test signals are applied to the comparators to ensure proper operation of the comparators and logic circuitry.

Abstract: An insertable part of an industrial endoscope having an insertable curvable portion and a proximal flexible portions, the portions being interconnected and joined in axial alignment by a connecting means. A protective cover covering the insertable portion and a protective cover covering the proximal portion, the covers being interconnected and joined axially to each other and to the connecting means by interengaging concavoconvex parts having radially aligned grooves with a plurality of plate springs in one of such grooves projecting into the other of such grooves and being compressible through holes in one of the grooves into the other of the grooves to release the abutting ends of the protective covers.

Abstract: A light transmitter, which transmits light from a light source through a light guide comprising an optical fiber flux and which includes an optical system provided with a light refracting plane and a cylindrical reflecting plane which are interposed between the light source and a light incident end plane of the light guide. The distribution characteristic of light incident upon the light guide is improved by the actions of said refracting plane and said cylindrical reflecting plane so that a uniform light flux can be introduced into the light guide. As a result, it is possible to prevent uneven illumination as well as sunburn on the light incident end plane of the light guide by the light source.

Abstract: An optical system is disclosed for an endoscope having a generally tubular distal end in which an objective lens assembly and an image sensor in the form of a solid-state video camera are internally housed so that an image formed by the lens assembly is focussed upon the input or pickup surface of the video camera. The video camera is disposed along or in proximity to the center axis of the distal end of the endoscope and in some instances is oblique with respect to the center axis. The video camera may be positioned in this way due to the provision of a reflecting surface which is angularly disposed in opposing relationship with an input surface of the video camera, and deflection means disposed in front of the lens assembly and within the objective lens assembly, or between the lens assembly and the reflecting surface so that an image formed by the lens assembly can be focussed on the input surface of the video camera.

Abstract: An optical system is disclosed for an endoscope having a generally tubular distal end in which an objective lens assembly and a solid-state video camera are internally housed so that an image formed by the lens assembly is focussed upon the video camera. The video camera is disposed along or in proximity to the center axis of the distal end of the endoscope. The video camera may be positioned in this way due to the provision of a reflecting surface which is angularly disposed in opposing relationship with an input surface of the video camera, and deflection means disposed in front of the lens assembly and within the objective lens assembly, or between the lens assembly and the reflecting surface, so that an image formed by the lens assembly can be focussed on the input surface of the video camera.

Abstract: In this invention, an attachment for changing a view angle and visual field direction or protecting a tip portion and others is removably fitted to a tip portion of an endoscope inserting portion. A connecting member pulling in and fixing this attachment is rotatably and nonremovably fitted on the outer periphery of the tip portion of the endoscope inserting portion. In order that this connecting member may not be pulled out of the tip portion of the endoscope inserting portion, a groove is peripherally formed on the outer periphery of the tip portion and engaging members engaging in this groove and having an elastic deformability are provided on the connecting member.

Abstract: The present invention provides an improved compositional material for a low melting point metal casting equipment and a method for producing the same, wherein said composition does not cause large cracks during operation even if there is a reduction in its physical strength resulting from the non-use of reinforcing asbestos fiber.This material actually has a durability equivalent to/or greater than that of products reinforced with asbestos fiber.

Abstract: A tray pressing device in a retort sterilizer for cooking foods, movable upward and downward individually, is provided correspondingly to each line of a tray at the uppermost stage of the tray. The tray pressing device comprises a plurality of trays which are in the retort sterilizer, a tray pressing plate which presses and covers the uppermost stage of trays in order to prevent from relieving the foods, a drive source which is installed on the retort sterilizer, and a connecting shaft which is connected the tray pressing place with the drive source. The tray pressing plate can be operated individually from the external section of the retort and be moved downward by its own weight and upward by the drive source installed on the retort through the connecting shaft. The foods are processed under high pressure and high temperature of hot water in the retort sterilizer.

Abstract: A gasket including a sheet having a composition of 40 to 80% by weight of thin flakes of expanded vermiculite, 1 to 30% by weight of fibers, 5 to 40% by weight of fine filling grains, and appropriate amounts of a binding agent and a vulcanizing agent. The sheet also has a metal plate laminated thereto. A vortex gasket may be formed by spirally winding a metal hoop together with a filling material, which is composed primarily of expanded vermiculite.

Abstract: A gasket sheet obtained by the milling and vulcanization of 50-85% by weight of a fibrous material, 10-50% by weight of a rubber material and at least 1-23% by weight of a water-insoluble and -swelling substance. The gasket sheet may be a one layer or a three layer sheet.

Abstract: A compressed non-asbestos sheet which comprises at least two types of fibers selected from the groups consisting of inorganic fibers other than asbestos and/or organic fibers, natural rubber and/or synthetic rubber, rubber chemicals, and fillers. The group of inorganic fibers is divided into two subgroups, one subgroup consisting of glass fibers, ceramic fibers, etc., and the other subgroup consisting of carbon and metal fibers. The group of organic fibers consists of synthesized and naturally occurring polymeric fibers including polyamide-based fibers, etc. The compressed non-asbestos sheet includes at least one of the combinations of the first and second subgroups, the first subgroup and the group of organic fibers, the second subgroup and the group of organic fibers, the fibers belonging to the second subgroup, and the organic fibers.

Abstract: A milled blend is prepared, which comprises extremely short fibers and rubber as well as a suitable amount of long fibers having hair root-like branches or a number of whiskers and/or bent long fibers and, optionally, a suitable amount of fillers. The milled blend is then laminated under pressure on both sides of a hooked, corrugated or embossed thin metal sheet, and vulcanized in a suitable manner. The resulting sheet gasket excels in sealing properties, heat resistance and durability.