Alexander T Chenvainu

US Patent:

6826797, Dec 7, 2004

Filed:

May 18, 2000

Appl. No.:

09/573576

Inventors:

Alexander T. Chenvainu - Brookline MA
Thomas A. Christman - Lexington MA
Amit Birla - Mansfield MA

Assignee:

Gillette Canada Company - Halifax

International Classification:

A46B 710

US Classification:

15110, 15 27, 151671, 15188, 601141

Abstract:

Oral devices are provided, including oral brushes that include bristle tufts and a rotatable member having radially extending protrusions constructed to wedge between a users teeth and, among other things, cause compression of the papilla.

US Patent:

D501605, Feb 8, 2005

Filed:

Nov 18, 2003

Appl. No.:

29/194039

Inventors:

Alexander T. Chenvainu - Sudbury MA, US
Thomas A. Christman - Lexington MA, US

Assignee:

The Gillette Company - Boston MA

International Classification:

0402

US Classification:

D 4101, D4111

US Patent:

6852262, Feb 8, 2005

Filed:

May 9, 2002

Appl. No.:

10/142123

Inventors:

William C. Carson - Acton MA, US
Alexander T. Chenvainu - Brookline MA, US
Thomas A. Christman - Lexington MA, US
Kenneth E. Johnson - Hollis NH, US
Charles P. Kiricoples - Salem MA, US
Alejandro Lee - Cambridge MA, US
Cardy J. Louis - Raynham MA, US
Helge Zimmet - Waltham MA, US

Assignee:

The Gillette Company - Boston MA

International Classification:

B29D005/00
B28B007/22
B28B005/00
B29B013/00

US Classification:

264252, 264239, 264241, 264250, 264255, 264259, 2642711, 264275, 264279

Abstract:

Methods of manufacturing razor cartridges are provided. One method includes loading a support portion of a supported blade into an elongated blade slot defined by a core member, the core member being configured to define a portion of a molding cavity defining the shape of the cartridge housing; and delivering a resin to the molding cavity to form the housing and capture a portion of the blade in the resin. In another method, a plurality of razor cartridges are manufactured substantially simultaneously by (a) removably mounting each blade on a core member; (b) placing each core member in a molding cavity; and (c) delivering a resin to the molding cavities to form at least a portion of the cartridge housing and capture a portion of the blade in the resin. In other methods a flexible region is provided adjacent the blade ends by: (a) delivering a compliant material to the molding cavity to capture at least the ends of the blade; (b) placing the blade and molded compliant material in a second molding cavity defining the shape of the molded housing; and (c) delivering a resin to the second molding cavity to form the molded housing, or by (a) providing coring areas in the molding cavity beyond each of the blade ends, configured to provide a flexible region of plastic adjacent each blade end in the finished product; and (b) delivering a resin to the molding cavity. In some methods, the resin is delivered through a gate that is positioned so that a substantial portion of the resin flow goes by the blade ends before the molding cavity is filled.

US Patent:

D526487, Aug 15, 2006

Filed:

Jan 10, 2005

Appl. No.:

29/221039

Inventors:

Alexander T. Chenvainu - Sudbury MA, US
Thomas A. Christman - Lexington MA, US
Duy Phong Vu - Frankfurt am Main, DE
Roland Ullmann - Offenbach, DE

Assignee:

The Gillette Company - Boston MA

International Classification:

0402

US Classification:

D 4101, D4111

US Patent:

D612611, Mar 30, 2010

Filed:

Feb 17, 2009

Appl. No.:

29/313888

Inventors:

Alexander Timothy Chenvainu - Sudbury MA, US
Thomas Aurele Christman - Lexington MA, US

Assignee:

The Gillette Company - Boston MA

International Classification:

0402

US Classification:

D 4101, D4111

US Patent:

7934284, May 3, 2011

Filed:

Feb 11, 2003

Appl. No.:

10/364148

Inventors:

Phillip M. Braun - Exeter RI, US
Alexander T. Chenvainu - Sudbury MA, US
Thomas A. Christman - Lexington MA, US

Assignee:

Braun GmbH - Kronberg

International Classification:

A46B 9/06

US Classification:

15 221, 15110, 151671, 15 28

Abstract:

Toothbrush heads, e. g. , for power toothbrushes, are provided. The toothbrush heads include a support member, a resilient member extending from the support member, and a plurality of tufts of bristles extending from the support member and at least partially surrounding the member. The resilient member may be cup-shaped, fan-shaped, or textured.

US Patent:

7941886, May 17, 2011

Filed:

Sep 19, 2003

Appl. No.:

10/666497

Inventors:

Alexander T. Chenvainu - Sudbury MA, US
Thomas A. Christman - Lexington MA, US

Assignee:

Braun GmbH - Kronberg

International Classification:

A61C 17/22

US Classification:

15 224, 15 221

Abstract:

Toothbrush heads, e. g. , for power toothbrushes, are provided. The toothbrush heads include a support member and a plurality of bristles or tufts of bristles extending from the support member, the bristles or bristle tufts having different lengths. The contour of the bristles may be selected to allow substantially all of the bristles to contact the dentition during brushing.

US Patent:

7958589, Jun 14, 2011

Filed:

Jun 12, 2009

Appl. No.:

12/483838

Inventors:

Phillip M. Braun - Exeter RI, US
Alexander T. Chenvainu - Sudbury MA, US
Thomas A. Christman - Lexington MA, US

Assignee:

The Gillette Company - Boston MA

International Classification:

A46B 13/02

US Classification:

15110, 151671, 15 221, 15 28

Abstract:

Toothbrush heads, e. g. , for power toothbrushes, are provided. An embodiment of the toothbrush heads include a support structure, a plurality of upstanding accurate members extending upward from a surface of the support structure forming an open center area, a second cleaning element disposed within the open center area and plurality of bristle tufts extending from the support structure and at least partially surrounding at least one of the plurality of arcuate segments.