Richard R Gofton

US Patent:

6840155, Jan 11, 2005

Filed:

Oct 17, 2001

Appl. No.:

09/981414

Inventors:

Carmo Ribeiro - Ann Arbor MI, US
Richard R. Gofton - Chelsea MI, US
Hongsheng Lin - Ann Arbor MI, US
Randall R. Gaiser - Chelsea MI, US

Assignee:

Federal-Mogul World Wide, Inc. - Southfield MI

International Classification:

F16J 104

US Classification:

92186, 92231

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. 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 between the skirt and head.

US Patent:

7870669, Jan 18, 2011

Filed:

Jul 27, 2004

Appl. No.:

10/899959

Inventors:

Carmo Ribeiro - Ann Arbor MI, US
Richard R. Gofton - Chelsea MI, US
Hongsheng Lin - Ann Arbor MI, US
Randall R. Gaiser - Chelsea MI, US

Assignee:

Federal-Mogul Corporation - Southfield MI

International Classification:

B21K 1/18
F16J 1/16

US Classification:

2988805, 92187

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. 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 between the skirt and head.

US Patent:

62604724, Jul 17, 2001

Filed:

Jul 28, 1998

Appl. No.:

9/123677

Inventors:

Xiluo Zhu - Canton MI
Richard R. Gofton - Tecumseh MI

Assignee:

Federal-Mogul World Wide, Inc. - Southfield MI

International Classification:

F16J 104

US Classification:

92214

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).

Address:

10669 Roepke Rd, Chelsea, MI 48118

VIN:

3GCEK23399G112385

Make:

CHEVROLET

Model:

SILVERADO 1500

Year:

2009