Ntn Corporation

Akros Limited

Seed Corporation

Satoru Fukuzawa

Masaaki Ohashi

Kazuo Hirose

Takuya Ishii

Yoshio Oki

Daichi Ito

Masayuki Yamazaki

Hirohisa Abe

Masato Shimoda

Takumi Hayashi

Akihiro Oomori

Shigeo Kobayashi

Ikuma Fujitsuka

Katsushi Takeo

Yukio Ohta

Kenji Ito

Tatsuro Sugiyama

Seiji Sato

Kei Hattori

Hiroshi Niwa

Sadatoshi Inagaki

Akihiko Matsuoka

Kenji Yamaoka

Yasushi Oohashi

Masaki Ohashi

Toshiaki Kato

Keiichi Goto

Shin Makino

Yukinobu Nomura

Shinji Kosaki

Takahiro Shimizu

Shoichi Nakamura

To provide an insulating rolling bearing that is capable of preventing electrolytic corrosion and preventing a gap from being undesirably formed between a shaft and a raceway ring. A sub bearingincludes an inner ring, an outer ring, ballsinterposed between the inner ring and the outer ring, and an insulating bushingfitted to an inner peripheral portion of the inner ring. The insulating bushingincludes a generally cylindrical metal base, and a resin layerformed on an inner peripheral surface of the metal base. The insulating bushingis fitted to the inner peripheral portion of the inner ringsuch that the metal baseabuts on the inner peripheral portion of the inner ring

Insulating rolling bearing

A tip sealfor a scroll compressor capable of reducing a frictional force between scroll members and the tip seal where the tip sealhas a spiral shape for sealing a compression chamber formed between a fixed scroll and a movable scroll in a scroll compressor provided with the fixed scroll. The movable scroll having a plurality of concave partsbeing formed by partially notching a sliding surfaceon the scroll members, the concave partsbeing arranged on at least one of a spiral inner peripheral surfaceor a spiral outer peripheral surface. Each of the concave partsbeing open to the inner peripheral surfaceor the outer peripheral surface

Tip seal for scroll compressor

A method for making a synthetic resin injection molded body that is gate-cut by die opening after injection molding by means of a pinpoint gate. A cavityis filled with a molten resin, from a first spruethat is provided coaxially with the injection direction of the molten resin, through a runnerthat is provided in the perpendicular direction to the first sprue, via a pinpoint gatethat is formed on a tip part of a second spruethat is provided horizontally to the injection direction of the molten resin, from a gate portof the pinpoint gateformed on a cavity plane that is in parallel with the die opening direction; after cooling, gate cutting is performed by means of die opening; and a molded body is taken out in an ejection step.

Injection molded body, injection molding method, and injection molding die

The present invention provides a method for producing a durable semispherical shoe which can be prevented from being subjected to seizure even in a dry lubrication state in which there is no lubricating oil at a start time of an operation of a swash plate compressor, can be restrained from deteriorating in its lubricating property due to generated frictional heat, and can be restrained from deteriorating in its strength at a production time and an injection molding die. A semispherical shoe (), for a swash plate compressor, to be produced by the production method has a base material (), consisting of a hard material, which has a hollow part along a central axis thereof and a resin layer, consisting of a resin composition, which is formed on a surface of a planar part, disposed on a periphery of the base member, which is to be subjected to sliding contact with the swash plate and on a surface of a spherical part, disposed on the periphery thereof, which is to be subjected to sliding contact with a piston. A resin-filled portion () where the resin composition is filled and an empty portion where the resin composition is not filled are formed in the hollow part of the base material. The resin-filled portion () and the resin layer are formed by injecting and filling the resin composition into a portion to be formed as the resin-filled portion () with the base material () being disposed inside a cavity () of the injection molding die.

Method for producing semispherical shoe for swash plate compressor and injection molding die

A swash plate compressor in which a lubricating film is not formed on a sliding contact surface of the swash plate and the piston owing to the use of the semispherical shoe. The semispherical shoe () is subjected to sliding contact with the swash plate of the swash plate compressor and the piston thereof. A base material () consists of a metallic member having a resin layer () formed on a surface of a planar part () that is subjected to sliding contact with the swash plate. A resin layer () is formed on a surface of a spherical part () to be subjected to sliding contact with the piston. The resin layer () and the resin layer () are integral with each other. At least one portion of the base material () is exposed.

Semispherical shoe for swash plate compressor and swash plate compressor

A tripod-type constant velocity joint includes an intermediate member, and first and second tripod members connected to the respective ends of the intermediate member. The intermediate member includes first and second outer rings. The first tripod member is formed with three protrusions, and the second tripod member is formed with three protrusions. The first outer ring is formed in its inner periphery with three axially extending first track grooves which are open at its axial end surface. The second outer ring is formed in its inner periphery with three axially extending second track grooves which are open at its axial end surface. The protrusions of the first tripod member are axially slidably received in the respective first track grooves. The protrusions of the second tripod member are axially slidably received in the respective second track grooves.

Tripod-type constant velocity joint

There is provided a composite plain bearing having excellent heat resistance, creep resistance under high surface pressure, low friction, abrasion resistance, and other characteristics while being capable of manufacture with high productivity. A composite plain bearing () comprising an ingot metal plate () and a resin layer () comprises a resin composition in which an aromatic polyether ketone resin or the like is used as a base resin, wherein the resin layer () is overlaid by injection molding and integrally provided on the surface on the surface of the ingot metal plate () to a thickness of 0.1 to 0.7 mm. The ingot metal plate () is chemically surface-treated on a face joined to the resin layer ().

Composite plain bearing, cradle guide, and sliding nut

The present invention provides an electrically conductive polyethylene resin composition having a stable volume resistance value and in addition, a low-friction property and a wear-resistant property and a resin molding, a sliding bearing, and a sliding sheet made of the electrically conductive polyethylene resin composition. The electrically conductive polyethylene resin composition contains 100 parts by weight of ultra-high-molecular-weight polyethylene resin which cannot be injection-molded and has a weight average molecular weight of one million to four millions, 2 to 15 parts by weight of Ketjenblack, and 0.5 to 5 parts by weight of at least one powder, having an average particle size of 1 to 30 &#x3bc;m, which is selected from among polytetrafluoroethylene resin powder, graphite powder, and silicone resin powder.

Electrically conductive polyethylene resin composition, electrically conductive polyethylene resin molding, sliding bearing, and sliding sheet

A radial sliding bearing provided with a sliding bearing (), an inner ring (), and an outer ring (), the inner ring () is made of melt-cast metal and the outer ring () being constituted by an article molded from a resin composition, the inner ring () comprising a concavely curved surface () on part of the axial direction of the outer circumference and a bearing hole () for mating with a support shaft on the inner circumference, the outer ring () having a convexly curved surface () that contacts and slides against the concavely curved surface () on the outer circumference of the inner ring () along part of the axial direction of the inner circumference, and the inner ring () and the outer ring () relatively rotating without contacting each other apart from the contact between the convexly curved surface and the concavely curved surface.

Sliding bearing and image forming apparatus

The present invention provides a sliding bearing which is inexpensive, has a simple construction, and is capable of keeping a frictional torque low. A sliding bearing () supports a heat roller such as a fixing roller, a pressure roller, and the like of an image-forming apparatus is constructed of an outer ring () and an inner ring (). The outer ring () is made of synthetic resin and the inner ring () is made of a sintered metal, or the outer ring () is made of a sintered metal and the inner ring is made of synthetic resin. The outer circumferential surface of the inner ring () is formed as a convexly curved surface, and the inner circumferential surface of the outer ring () is formed as a concavely curved surface corresponding to the convexly curved surface. The outer ring () is composed of two radially halved parts. The inner ring () is fitted on the outer ring () by sandwiching the inner ring () between the radially halved parts of the outer ring () in such a way that the inner circumferential surface of the outer ring () and the outer circumferential surface of the inner ring () slide relative to each other.

Sliding bearing

Electrically conductive polyethylene resin composition, electrically conductive polyethylene resin molding sliding bearing, and sliding sheet

A method for manufacturing a plate-shaped peeling member having a thin metal plate and a resin sheet adhered thereto by wrapping the resin sheet around a leading edge of the thin metal plate. The plate-shaped peeling member peels paper from a roller or a belt of an electrophotographic apparatus, with a leading edge of the thin metal plate in contact with or being adjacent to the roller or the belt. The method includes the step of stacking an adhesive agent-applied resin sheet to one main surface of a thin metal plate without pulling both end portions of the adhesive agent-applied resin sheet in a longitudinal direction thereof, with an unstuck portion left on the adhesive agent-applied resin sheet in a widthwise direction thereof and with the adhesive agent-applied resin sheet being pressurized in a longitudinal direction thereof.

Method of making a plate-shaped peeling member

A constant-velocity joint includes an outer ring having an annular space therein and an opening at one axial end thereof. The annular space is defined by a radially outer wall and a radially inner wall of the outer ring. At least one of the radially outer wall and the radially inner wall has three axially extending track grooves circumferentially spaced apart from each other by 120 degrees. A cage is inserted in the annular space. The cage has pockets at positions corresponding to the track grooves, respectively. A ball is received in each of the pockets so as to roll along one of the track grooves. A pair of diametrically opposed protrusions is formed at radially inner and outer open ends of the pockets of the cage to prevent the balls from coming out of the pockets of the cage.

Constant-velocity joint and image-forming device

A bearing bush, disposed in a shaft hole of an external gear of a seat reclining device, which slidingly contacts wedge-shaped pieces. The seat reclining device has a differential transmission mechanism for adjusting an open angle of a hinge connecting a seating surface of a seat and a backrest thereof to each other. The differential transmission mechanism has an internal gear; an external gear, having a smaller number of teeth than the internal gear, which engages the internal gear; a pair of the wedge-shaped pieces disposed in a circular arc-shaped gap formed between the shaft hole of the external gear and a shaft of the internal gear with tapered ends of the wedge-shaped pieces opposed to each other; and a compression coil spring for imparting an elastic force to the wedge-shaped pieces in a direction in which the wedge-shaped pieces depart from each other. When the wedge-shaped pieces are moved in sliding contact with the bearing bush inside the circular arc-shaped gap with the wedge-shaped pieces being pressed by a cam provided on the shaft of the internal gear, the external gear disengages from the internal gear, whereby the open angle of the hinge is adjustable. A sliding surface of the bearing bush is formed of a fluorocarbon resin composition containing fluorocarbon resin to which thermoplastic resin, carbon fibers, and molybdenum disulfide are essentially added.

Bearing bush for seat reclining device and seat reclining device

The object is to provide a reclining device for a seat such as an automotive seat including a differential transmission mechanism (Taumel mechanism) which makes it possible to eliminate precision machining of the inner surface of an external gear into which a slide bearing is pressed, in which the freedom of design of the reclining device is not restricted by the standards of a bearing bush, and which can be manufactured at a low cost. The reclining device includes a differential transmission mechanism for adjusting the opening angle of a hinge through which the seating portion and the backrest portion of the seat are coupled together. The differential transmission mechanism includes an internal gear and an external gear having a slightly smaller number of teeth than the internal gear and meshing with the internal gear. An arcuate gap is defined between a shaft hole of the external gear and a small-diameter portion of a cam integral with a shaft of the internal gear. A pair of wedge-shaped pieces and are received in the arcuate gap such that their narrow ends and face in opposite directions to each other. At least the outer surfaces and of the wedge-shaped pieces and, which serve as frictional contact surfaces when the wedge-shaped pieces and are pushed by the cam integral with the shaft of the internal gear and slide in the arcuate gap, are each made of a low-friction sliding material.

Growing community of inventors

Mie, Japan

Satoru Fukuzawa