Eric E Hatfield

US Patent:

7537065, May 26, 2009

Filed:

Jan 9, 2003

Appl. No.:

10/339634

Inventors:

William Gallagher - Shrewsbury PA, US
David W. Weiford - Parkville MD, US
William Goddard - Shrewsbury PA, US
Eric Hatfield - Owings Mills MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B23B 45/02

US Classification:

173170, 173216, 173217

Abstract:

An angle grinder is provided including a rotating handle configuration allowing the handle of the angle grinder to be locked in different positions relative to the angle grinder housing. A switch mounting configuration is provided for simplifying the assembly of the switch device. A gear wheel lock mechanism is also provided to allow the grinding wheel spindle to be prevented from rotating during removal or installation of a grinding wheel on the spindle. A gear case cooling and air bleed arrangement are also provided.

US Patent:

7722444, May 25, 2010

Filed:

Feb 19, 2008

Appl. No.:

12/070534

Inventors:

William F. Gallagher - Stewartstown PA, US
Michael C. Doyle - Baldwin MD, US
Eric E. Hatfield - Jacobus PA, US
David C. Tomayko - Ellicott City MD, US
Daniel L. Krout - New Freedom PA, US
Tanika Malloy - Havre de Grace MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B24B 41/00
B24B 23/00

US Classification:

451359, 451344, 451353

Abstract:

An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.

US Patent:

8087976, Jan 3, 2012

Filed:

Feb 20, 2008

Appl. No.:

12/070678

Inventors:

William F. Gallagher - Shrewsbury PA, US
Michael C. Doyle - Baldwin MD, US
Eric E. Hatfield - Owings Mills MD, US
David C. Tomayko - Ellicott City MD, US
Daniel L. Krout - New Freedom PA, US
Tanika Malloy - Havre de Grace MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B24B 23/04

US Classification:

451344, 451357, 451359, 200 4317

Abstract:

An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.

US Patent:

8087977, Jan 3, 2012

Filed:

Apr 24, 2006

Appl. No.:

11/409904

Inventors:

William F. Gallagher - Stewartstown PA, US
Michael C. Doyle - Baldwin MD, US
Eric E. Hatfield - Jacobus PA, US
David C. Tomayko - Ellicott City MD, US
Daniel L. Krout - Abingdon MD, US
Tanika Malloy - Nottingham MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B24B 27/08
B24B 55/04
H02K 9/00
H02K 7/14

US Classification:

451359, 310 62, 4174238, 41742314, 451456, 451488

Abstract:

An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.

US Patent:

8292700, Oct 23, 2012

Filed:

Dec 1, 2011

Appl. No.:

13/308892

Inventors:

William F. Gallagher - Stewartstown PA, US
Michael C. Doyle - Baldwin MD, US
Eric E. Hatfield - Jacobus PA, US
David C. Tomayko - Ellicott City MD, US
Daniel L. Krout - Abingdon MD, US
Tanika Malloy - Nottingham MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B24B 27/08
B24B 55/04
H02K 9/00
H02K 7/14

US Classification:

451359, 310 62, 4174238, 41742314, 451456, 451488

Abstract:

An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.

US Patent:

8317350, Nov 27, 2012

Filed:

Sep 30, 2010

Appl. No.:

12/895051

Inventors:

Brian E. Friedman - Baltimore MD, US
Stephen P. Osborne - Pikesville MD, US
Eva J. Dixon - Columbia MD, US
Eric E. Hatfield - Jacobus PA, US
Daniel Krout - Abingdon MD, US
Robert Kusmierski - York PA, US
Corey G. Robertson - Felton PA, US
Jeffrey Delcamp - Baltimore MD, US
Daniel Puzio - Baltimore MD, US
Robert S. Gehret - Hampstead MD, US
Stuart Garber - Towson MD, US
Joerg Zellerhoff - Towson MD, US
Joao Norona - Baltimore MD, US
Aris C. Cleanthous - Baltimore MD, US
Amanda Miller - Joppa MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B25B 23/18
B25B 23/12

US Classification:

362119, 362120, 362192

Abstract:

A power tool having a light for illuminating an area proximate a movable end effector. The light may be mounted in such a way as to transmit light through a rotatable collar on the power tool, through or through a member of a housing of the power tool, or from the moving end effector. The light may be powered by a power source that is used for moving the end effector or from a generator that generates electrical power when the power tool is used.

US Patent:

8506108, Aug 13, 2013

Filed:

Sep 14, 2012

Appl. No.:

13/616610

Inventors:

Brian E. Friedman - Baltimore MD, US
Stephen P. Osborne - Pikesville MD, US
Eva J. Dixon - Columbia MD, US
Eric E. Hatfield - Jacobus PA, US
Daniel Krout - Abingdon MD, US
Robert Kusmierski - York PA, US
Corey G. Robertson - Felton MD, US
Jeffrey Delcamp - Baltimore MD, US
Daniel Puzio - Baltimore MD, US
Robert S. Gehret - Hampstead MD, US
Stuart Garber - Towson MD, US
Joerg Zellerhoff - Towson MD, US
Joao Norona - Baltimore MD, US
Aris Cleanthous - Towson MD, US
Amanda Miller - Joppa MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

B25B 23/18

US Classification:

362119, 362192

Abstract:

A power tool having a light for illuminating an area proximate a movable end effector. The light may be mounted in such a way as to transmit light through a rotatable collar on the power tool, through or through a member of a housing of the power tool, or from the moving end effector. The light may be powered by a power source that is used for moving the end effector or from a generator that generates electrical power when the power tool is used.

US Patent:

20090114412, May 7, 2009

Filed:

Oct 22, 2008

Appl. No.:

12/255738

Inventors:

Eric Hatfield - Jacobus PA, US

International Classification:

B23Q 5/00

US Classification:

173217

Abstract:

A power tool includes a tool housing and a motor received in the tool housing. The tool housing includes an end portion surrounding at least a rear portion of the motor. At least a portion of the end portion of the tool housing has a double-wall structure and includes an interior wall and an exterior wall. The interior wall and the exterior wall are spaced from each other. In an aspect, a plurality of ribs extend from the interior wall to the exterior wall in a direction transverse to the interior wall and the exterior wall. In an aspect, a plurality of the plurality of the ribs are not tied to the exterior wall.