Bridgestone Corporation

Hiroshi Fukuyama

Yasuo Suzuki

Isao Watanabe

Itsuo Tanuma

Yasuhiro Morimura

Minoru Ishiharada

Hideo Sugiyama

Masato Sugimachi

Tatsuo Terahama

Shigeru Yoshida

Naomi Sato

Makoto Nakao

Tadakazu Nishikawa

Norio Goshima

Kiyoshi Oono

Junichi Misawa

Hirohide Taguchi

Makoto Morinaga

A light transmission tube includes a tubular clad and a core section having a higher refractive index than that of the tubular clad. A belt-like reflecting layer is formed between the tubular clad and the core section, extending in the longitudinal direction of the tubular clad, in a manner such that a light passing through the core section is reflected and scatterred by the reflecting layer and then emitted from an outer surface area of the tubular clad, which outer surface area is located opposite to one side of the tubular clad where the reflecting layer has been formed. Further, the reflecting layer may be so formed that a light is allowed to be emitted in a plurality of directions. Moreover, the belt-like reflecting layer may be formed into a spiral configuration. The width of the belt-like reflecting layer may be changed in the longitudinal direction of the light transmission tube. The tubular clad is allowed to have a non-circular cross section. The clad formation material may contain an ultraviolet light shielding material or an ultraviolet light absorbing material.

Light transmission tubes

In an optical transmission tube comprising a tubular cladding and a core within the cladding having a higher index of refraction than the cladding, a strip-shaped reflecting layer is longitudinally extended between the cladding and the core. Light passing through the core is reflected and scattered by the reflecting layer to emerge from the tube through an area of the outer surface of the cladding opposed to the reflecting layer. The optical transmission tube is prepared by dispersing scattering particles in a monomer solution; filling a tubular cladding with the monomer solution; resting the cladding horizontally for allowing the scattering particles to settle on a lower inner surface of the cladding; and thereafter, causing the monomer solution to polymerize and solidify within the cladding.

Optical transmission tube, making method, and linear illuminant system

A drive roller for use in a conveyor, comprising rotary shafts supported in respective bearings, the respective rotary shafts being provided at the respective ends of a core member and one of the rotary shafts being connected to a drive source. The core member is a hollow- or solid-cylindrical one and has provided thereon and fastened at the respective end portions thereof a tubular inflatable member having at least one inner cord layer in which the cords are laid with a predetermined angle, one end of which inflatable member is fastened to one end portion of the core member while the other end of the inflatable member is folded back inwardly and fastened to the other end portion of the core member, thus a sealed space being defined between the inflatable member and the outer surface of the core member. A fluid passage is formed in the core member to supply and discharge the fluid to and from the sealed space to inflate and deflate the inflatable member, the inflatable member when inflated having a cylindrical outer surface. A to-be-conveyed object is supported and driven only on the outer surface of the inflatable member when inflated.

Drive roller in conveyor

A revolving force transmission/revolution stopping device which supports rotatably one of two shafts or both and connects/disconnects a revolving force of one of the two shafts to/from the other or stops one of the shafts from revolving. At least a portion of one of the two shafts is in the form of a hollow cylinder while the other shaft is at least partially inserted in the hollow cylindrical portion, either of the two shafts is provided with a member inflatable when supplied with a fluid, a passage for supply and discharge of the fluid is formed in the shaft having the inflatable member, and the inflatable member, when inflated by the supplied fluid, catches the shaft with no such inflatable member or is forced to the hollow inner circumferential surface of the cylindrical portion.

Revolving force transmission/revolution stopping device

A catching apparatus has a body to which an open ended inflatable cylindrical tube is affixed, for sealingly catching a fluid filled object. The fluid filled object is caught by the surface of the tube when air is supplied to the space between the tube and the body. An inflation limiting member is provided in a part of an area in which the tube inflates, in order to limit the inflation of the tube to a desired region.

Apparatus for gripping an object

A device for inspecting the pressure, temperature, etc. in a tire includes a pressure sensor attached to a valve mounted on the tire rim and having an output that varies depending upon the tire internal pressure, and a resonator including a resonant coil and capacitor which resonates in the presence of an external radiation electromagnetic wave. An oscillation coil of an oscillator which generates the external radiation electromagnetic wave projects from the main body of the inspection device. The main body encloses a signal processor which detects and processes any change in oscillation state which has taken place at the oscillator, as caused by the resonance state of the resonator, and a display to display the result of the signal processing by the signal processor.

Tire inspection device

The present invention provides a catching head of apparatus for catching parts, having a tube expansible by a fluid such as air, etc. hermetically fixed at both the ends thereof to a hard base end and free end, respectively, of a core member. When in use, the tube of the catching head is expanded by air to catch a part or any other object to be handled. The one end of the tube attached to the free end of the core member is fitted as folded back to the free end of the core member. A passage is formed in the base end of the core member to supply air into the tube hermetically sealed.

Catching head of apparatus for handling parts such as cylinder blocks

A measuring equipment comprising a single plate-like structure of which the central and peripheral portions are linked by beams at a minimum of 4 places. The central portion of the single plate-like structure is a board to which a load is to be applied, and pairs of strain gauges, each provided with 2 resistors, are attached on the top and bottom faces or the side faces, respectively, of each beam. A load applied to the loading board is detected as strain by the strain gauges at each beam which provide electrical outputs for indicating load.

Growing community of inventors

Tokyo, Japan

Hiroshi Fukuyama