Robert Stanton Bierwith, 751331 Eastshore Hwy, Berkeley, CA 94710

6393738, May 28, 2002

Nov 1, 2000

09/704297

Robert S. Bierwith - Berkeley CA, 94710

E02F 928

37455

An excavating bucket assembly for excavation apparatus that does not use pins to connect teeth to adaptors on the excavation bucket. Each adaptor includes a receiving portion defined therein that is at least partially defined by an abutment wall. Each tooth includes an interference portion. The connection system includes a biasing portion adjacent the abutment wall and a locking portion adjacent the biasing portion. The locking portion includes a locking section and an interference section that engages the interference portion of its respective tooth. The locking section and the interference section are capable of movement relative to one another to thereby couple the tooth to the adaptor. The locking section included at least one biasing plunger that engaged a corresponding biasing pin within the biasing portion when the connection system is in use.

6415533, Jul 9, 2002

Feb 15, 2001

09/784925

Robert S. Bierwith - Berkeley CA, 94710

E02F 928

37455

An excavating bucket assembly for excavation apparatus that does not use pins to connect teeth to adaptors on the excavation bucket. Each adaptor includes a receiving portion defined therein that is at least partially defined by an abutment wall. Each tooth includes an interference portion. The connection system includes a biasing portion adjacent the abutment wall and a locking portion adjacent the biasing portion. The locking portion includes a locking section and an interference section that engages the interference portion of its respective tooth. The locking section and the interference section are capable of movement relative to one another to thereby couple the tooth to the adaptor.

6652186, Nov 25, 2003

Oct 1, 2001

09/969961

Robert S. Bierwith - Berkeley CA, 20350

E01C 1926

404124, 37457

A cleat assembly for trash compactor vehicle wheels that does not use pins to attach replaceable cleats to cleat bases on the trash compactor vehicle wheels. The cleat assembly includes a cleat base with a receiving portion that has a cleat base abutment wall. The cleat assembly also includes a re-useable connection system and a replaceable cleat with an interference portion. The connection system includes a biasing portion that is adjacent to the cleat base abutment wall and a locking portion that is adjacent to the biasing portion when the connection system is in use. The locking portion includes a locking section and an interference section that engage the interference portion of the replaceable cleat. The locking section and the interference section are capable of movement relative to one another to thereby couple the replaceable cleat to the cleat base. The biasing portion includes an abutment section with an abutment opening extending therethrough and a resilient biasing section disposed within, and extending from, the abutment opening.

6668472, Dec 30, 2003

Jul 15, 2002

10/196570

Robert Bierwith - Berkeley CA, 94710

E02F 928

37455

A locking system for coupling a first member including an aperture, and a second member having a receiving region is disclosed. The locking system comprises: (a) an interference element including (i) a first portion that fits within the aperture when the locking system couples the first member and the second member together, (ii) a second portion, wherein the first portion forms an angle with respect to the second portion, and (iii) a protrusion that extends into the receiving region when the locking system is in use; and (b) a locking element that engages the second portion of the interference element when the locking system is in use.

6675509, Jan 13, 2004

May 23, 2002

10/154568

Robert S. Bierwith - Berkeley CA, 94710

E02F 928

37452

An excavating bucket assembly for excavation apparatus that does not use pins to connect teeth to adaptors on the excavation bucket. Each adaptor includes a receiving portion defined therein that is at least partially defined by an abutment wall. Each tooth includes an interference portion. The connection system includes a biasing portion adjacent the abutment wall and a locking portion adjacent the biasing portion. The locking portion includes a locking section and an interference section that engages the interference portion of its respective tooth. The locking section and the interference section are capable of movement relative to one another to thereby couple the tooth to the adaptor. The locking section included at least one biasing plunger that engaged a corresponding biasing pin within the biasing portion when the connection system is in use.

6751897, Jun 22, 2004

Nov 13, 2001

10/054332

Robert S. Bierwith - Berkeley CA, 94710

E02F 336

37446, 37450

A lip assembly is disclosed. The lip assembly comprises a lip having an upper surface, a lower surface, a front portion, and a rear portion. A plurality of holes is disposed between the front portion and the rear portion. The lip also includes support members. Each support member is disposed adjacent to a hole within the plurality of holes and is positioned to inhibit movement of a tooth assembly coupled to the hole. A plurality of tooth assemblies extend away from the lip and are respectively coupled to the lip via the plurality of holes. The lip assembly may be used with an excavation bucket body.

6952892, Oct 11, 2005

Nov 13, 2003

10/713233

Robert S. Bierwith - Berkeley CA, US

E02F001/00

37195

A lip assembly is disclosed. The lip assembly comprises a lip having an upper surface, a lower surface, a front portion, and a rear portion. A plurality of holes is disposed between the front portion and the rear portion. The lip also includes support members. Each support member is disposed adjacent to a hole within the plurality of holes and is positioned to inhibit movement of a tooth assembly coupled to the hole. A plurality of tooth assemblies extend away from the lip and are respectively coupled to the lip via the plurality of holes. The lip assembly may be used with an excavation bucket body.

7121022, Oct 17, 2006

Mar 31, 2004

10/815471

Robert Bierwith - Berkeley CA, US

Berkeley Forge and Tool, Inc. - Berkeley CA

E02F 9/28

37455, 37456, 37458

A locking assembly is disclosed. The locking assembly is for coupling a first member including a receiving area, and a second member having a receiving region. The locking system includes an interference element including an interfering portion that is received within the receiving area of the first member when the locking system couples the first member and the second member together, a biasing element, a cam, wherein the cam is adapted to cause the biasing element to be in a biased position or an unbiased position, and a wedge shaped structure.