Patent application number | Description | Published |
20090158803 | Method of Manufactring Ring-Shaped Member - The yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank are improved to achieve the cost reduction. A half-finished article | 06-25-2009 |
20090158808 | Method for Manufacturing Ring-Shaped Member - The yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material is improved to achieve the cost reduction of the ring-shaped member. A plurality of longitudinal annular blanks | 06-25-2009 |
20090255318 | Method of Manufacturing Ring-Shaped Member - The outer side of a pair of curved parts | 10-15-2009 |
20100083725 | PROCESS FOR MANUFACTURING RING-SHAPED MEMBER - A method of producing a ring-shaped member is provided in which a material loss is eliminated, the process cost can be reduced, and a ring-shaped member can be easily obtained from a pipe member by a small number of steps. The method includes steps of: inwardly projectingly shaping a flange portion | 04-08-2010 |
20100083727 | PROCESS FOR MANUFACTURING RING-SHAPED MEMBER - A yield which is a ratio of the weight of a ring-shaped member to that of a stock material, and a yield which is a ratio of the ring-shaped member to a blank are improved, and the cost is reduced. In a method of producing a ring-shaped member in which a ring-shaped member is obtained from a longitudinally elongated annular blank | 04-08-2010 |