Charles G Ollinger

US Patent:

20020104238, Aug 8, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/776020

Inventors:

Charles Ollinger - Aloha OR, US

International Classification:

E02F003/88

US Classification:

037/327000

Abstract:

A dredge cutterhead has a plurality of helical arms interconnecting a hub and a ring. Each of the arms has a front leading edge for attachment of cutting teeth. In one aspect, each of the arms has a trough portion, and the arm is shaped such that dredged material is directed toward the ring along the center of the trough portion. In another aspect, the ring of the cutterhead defines an annular channel for receiving loosened material.

US Patent:

20030024137, Feb 6, 2003

Filed:

Sep 5, 2002

Appl. No.:

10/236358

Inventors:

Terry Briscoe - Portland OR, US
Charles Ollinger - Aloha OR, US
Ermanno Simonutti - Milwaukie OR, US

International Classification:

E02F003/60

US Classification:

037/398000

Abstract:

A dragline apparatus has an independently controlled front hoist line and rear hoist line. The front hoist line is connected to the forward end of the bucket, and the rear hoist line is connected to the rearward end.

US Patent:

20030089003, May 15, 2003

Filed:

Nov 9, 2001

Appl. No.:

09/986705

Inventors:

Charles Ollinger - Aloha OR, US
Noah Cowgill - Portland OR, US

International Classification:

E02F009/28

US Classification:

037/452000

Abstract:

An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading.

US Patent:

20030121185, Jul 3, 2003

Filed:

Nov 8, 2002

Appl. No.:

10/290472

Inventors:

Charles Ollinger - Aloha OR, US
Noah Cowgill - Portland OR, US

Assignee:

ESCO Corporation - Portland OR

International Classification:

E02F009/28

US Classification:

037/457000, 037/450000

Abstract:

An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading.

US Patent:

20030126771, Jul 10, 2003

Filed:

Feb 26, 2003

Appl. No.:

10/375559

Inventors:

Terry Briscoe - Portland OR, US
Charles Ollinger - Aloha OR, US
Ermanno Simonutti - Milwaukie OR, US

International Classification:

E02F003/60

US Classification:

037/398000

Abstract:

A dragline apparatus has an independently controlled front hoist line and rear hoist line. The front hoist line is connected to the forward end of the bucket, and the rear hoist line is connected to the rearward end.

US Patent:

20040237355, Dec 2, 2004

Filed:

Jul 13, 2004

Appl. No.:

10/889094

Inventors:

Charles Ollinger - Aloha OR, US

Assignee:

ESCO Corporation - Portland OR

International Classification:

E02F009/28

US Classification:

037/452000

Abstract:

An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading. The undersurface of the base is formed with a groove to improve the strength and durability of the weld.

US Patent:

20080005940, Jan 10, 2008

Filed:

Jul 10, 2006

Appl. No.:

11/483581

Inventors:

Charles G. Ollinger - Aloha OR, US

Assignee:

ESCO Corporation - Portland OR

International Classification:

E02F 9/28

US Classification:

37452

Abstract:

A wear member for excavating equipment and which is particularly suited for a dredge cutterhead that includes a curved abutting surface that abuts a complementary curved bearing surface on the base. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading. The base and adapter further having a plurality of complementary stops for resisting relative movement between them.

US Patent:

59920610, Nov 30, 1999

Filed:

Jul 25, 1997

Appl. No.:

8/900351

Inventors:

Robert S. Fleck - Portland OR
Charles G. Ollinger - Aloha OR

Assignee:

Esco Corporation - Portland OR

International Classification:

E02F 358

US Classification:

37397

Abstract:

A hoisting assembly for use with a dragline bucket that includes a compensator for generally stabilizing the attitude of the bucket. The compensator is operably coupled to the lift, hoist and dump lines. The connector for the lift line(s) defines a fulcrum about which the compensator turns during use. As the tension in the dump line increases relative to the tension of the hoist lines, the compensator turns about the fulcrum to lift the hoist lines and shift the sheave supporting the dump line forward. As the tension in the dump line decreases relative to the tension of the hoist lines, the compensator turns about the fulcrum in the opposite direction to lower the lift lines and shift the sheave supporting the dump line rearward.