Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Kametaka
Koji Kametaka, Minato-Ku JP
| Patent application number | Description | Published |
|---|---|---|
| 20100237564 | Mechanical Seal - The present invention provides a mechanical seal preventing the deformation of the cartilage and exhibiting a good sealing performance. In said mechanical seal, the deformation of the back portion | 09-23-2010 |
Koji Kametaka, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20090300900 | MECHANICAL SEAL DEVICE - A primary technical goal of a mechanical seal device of the present invention is to decrease assembly cost thereof as well as machining cost thereof and to prevent wear of seal surfaces by preventing occurrence of squealing noises of the seal surfaces. The mechanical seal device comprises a first seal ring which is one of a pair of seal rings and disposes an engagement portion at the outer circumferential surface, a retainer ring which has a first support portion supporting an inner diameter surface of the first seal ring and a second support portion engaging the engagement portion and is fixed with either a seal housing or a shaft, and a gasket which joins the retainer ring and the first seal ring in a sealing manner, wherein an engagement clearance (C) formed in a rotational direction between the engagement portion and the second support portion is within 0.5 mm. | 12-10-2009 |
Koji Kametaka, Iwata-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110209562 | Sensor-equipped bearing for wheel - A wheel support bearing assembly includes rolling elements ( | 09-01-2011 |
Kouji Kametaka, Iwata-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090148091 | Wheel Bearing Apparatus - A vehicle wheel bearing apparatus has a double row angular ball bearing including double rows of ball groups. A pitch circle diameter of the double row ball group of the outer side is larger than a pitch circle diameter of the double row ball group of the inner side. The outer member is made of medium carbon steel including carbon of 0.40˜0.80% by weight. It is hardened by high frequency induction quenching so that each of the outer raceway surfaces is formed with a hardened layer having a surface hardness of 58˜64 HRC. The effective depth of hardened layer is set at at least 2 mm. The minimum wall thickness of the outer member at these outer raceway surfaces is set at at least 4 mm. | 06-11-2009 |
| 20090154855 | WHEEL BEARING APPARATUS FOR A VEHICLE - A wheel bearing apparatus has a wheel hub ( | 06-18-2009 |
| 20090220180 | Wheel Bearing Apparatus For A Vehicle - A vehicle wheel bearing apparatus has an outer member formed, on its inner circumference, with double row outer raceway surfaces. An inner member includes a wheel hub integrally formed with a wheel mounting flange at its one end. The wheel hub outer circumference surface has double row inner raceway surfaces arranged opposite to the double row outer raceway surfaces. Double row balls are freely rollably contained between the outer raceway surfaces and inner raceway surfaces, respectively, of the outer member and the inner member. A pitch circle diameter of the double row ball group of the outer-side is larger than a pitch circle diameter of the double row ball group of the inner-side. At least the outer member and the wheel hub are formed of medium/high carbon steel including carbon of 0.40˜0.80% by weight. The inner and outer raceway surfaces are formed, respectively, with predetermined hardened layers with a surface hardness of 58˜64 HRC. The grain size number of austenite crystal grains of the metallographic structure in the hardened layers is selected larger than #7. | 09-03-2009 |