公开(公告)号：US07870669B2

公开(公告)日：2011-01-18

申请号：US10899959

申请日：2004-07-27

Applicant: Carmo Ribeiro ,  Richard R. Gofton ,  Hongsheng Lin ,  Randall R. Gaiser

Inventor： Carmo Ribeiro ,  Richard R. Gofton ,  Hongsheng Lin ,  Randall R. Gaiser

IPC: B21K1/18 ,  F16J1/16

CPC classification number: F02F3/0023 ,  B21K1/18 ,  B23P15/10 ,  F02F3/00 ,  F02F3/0015 ,  F02F3/003 ,  F02F3/22 ,  F02F2200/04 ,  F02F2200/06 ,  Y10T29/49252 ,  Y10T29/49266 ,  Y10T29/49288

Abstract: A multi-axially forged mono-bloc piston includes a lower crown part forged of steel and including a pair of pin bosses and an integral skirt formed as one piece with the pin bosses 20. The lower crown part is friction welded to an upper crown part to form at least one closed oil gallery within the piston head. The lower crown part is forged in the longitudinal direction of the piston as well as laterally to impart longitudinal and laterally forged features of the piston. The laterally forged features may comprise undercut recesses formed in the piston skirt to reduce material in the overall piston structure. The lateral forging may also result in the piston skirt portion being discoupled from the piston head by laterally forged slots formed in the lower crown part 14 between the skirt and head.

Abstract translation: 多轴锻造单块活塞包括锻造钢的下冠部，包括一对销凸台和与销凸台20形成为一体的整体裙部。下冠部摩擦焊接到上冠部 以在活塞头内形成至少一个闭合油画廊。 下冠部在活塞的纵向方向上锻造，并且横向地被锻造以赋予活塞的纵向和横向锻造特征。 横向锻造的特征可以包括形成在活塞裙部中的底切凹部，以减少整个活塞结构中的材料。 横向锻造也可能导致活塞裙部通过形成在裙部和头部之间的下冠部14中的横向锻造槽而与活塞头脱离。

公开(公告)号：US06840155B2

公开(公告)日：2005-01-11

申请号：US09981414

申请日：2001-10-17

Applicant: Carmo Ribeiro ,  Richard R. Gofton ,  Hongsheng Lin ,  Randall R. Gaiser

Inventor： Carmo Ribeiro ,  Richard R. Gofton ,  Hongsheng Lin ,  Randall R. Gaiser

IPC: B21J5/00 ,  B21J5/02 ,  B21K1/18 ,  B23K20/12 ,  B23P15/10 ,  F02F3/00 ,  F02F3/22 ,  F16J1/04

CPC classification number: F02F3/0023 ,  B21K1/18 ,  B23P15/10 ,  F02F3/00 ,  F02F3/0015 ,  F02F3/003 ,  F02F3/22 ,  F02F2200/04 ,  F02F2200/06 ,  Y10T29/49252 ,  Y10T29/49266 ,  Y10T29/49288

Abstract: A multi-axially forged mono-bloc piston includes a lower crown part forged of steel and including a pair of pin bosses and an integral skirt formed as one piece with the pin bosses 20. The lower crown part is friction welded to an upper crown part to form at least one closed oil gallery within the piston head. The lower crown part is forged in the longitudinal direction of the piston as well as laterally to impart longitudinal and laterally forged features of the piston. The laterally forged features may comprise undercut recesses formed in the piston skirt to reduce material in the overall piston structure. The lateral forging may also result in the piston skirt portion being discoupled from the piston head by laterally forged slots formed in the lower crown part 14 between the skirt and head.

公开(公告)号：US06260472B1

公开(公告)日：2001-07-17

申请号：US09123677

申请日：1998-07-28

Applicant: Xiluo Zhu ,  Richard R. Gofton

Inventor： Xiluo Zhu ,  Richard R. Gofton

IPC: F16J104

CPC classification number: F02F3/003 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

Abstract: A one-piece piston (20) formed by an upper crown (28) and a lower crown (30) having an integral skirt (24, 26). The upper crown (28) includes an upper surface (32) and a lower surface (34, 42). The lower crown (30) includes an upper surface (50) and two pin bosses (52, 54). The upper crown (28) has a first collar (44) and the lower crown (30) has a second collar (64). In addition, skirt ribs (24, 26) connect the two pin bosses (52, 54). The first and second collars (44, 64) are secured together to form the one-piece piston (20).

Abstract translation: 由具有整体裙部（24,26）的上冠（28）和下冠（30）形成的一体式活塞（20）。 上冠（28）包括上表面（32）和下表面（34,42）。 下冠（30）包括上表面（50）和两个销凸起（52,54）。 上冠部（28）具有第一套环（44），下冠部（30）具有第二套环（64）。 此外，裙边肋（24,26）连接两个销钉凸起（52,54）。 第一和第二轴环（44,64）被固定在一起以形成一体式活塞（20）。