DAVID CHARLES CAMPBELL
Engineering in Bel Air, MD

6484409, Nov 26, 2002

Apr 21, 2000

09/557197

David C. Campbell - Bel Air MD
Angela M. Waldrop - Parkville MD

Black Decker Inc. - Newark DE

B27B 1104

30371, 30 92, 30 96, 30374, 30378

A pruner attachment apparatus for a power tool having a body, a shoe extending from the body, and a saw blade interconnected to the body for reciprocating motion. The pruner attachment apparatus includes a mounting member, a hook member and a biasing mechanism. The mounting member is releasably attachable to the shoe. The hook member is carried by the mounting member for movement between a first position and a second position. The biasing mechanism biases the hook member to the second position.

6042310, Mar 28, 2000

Dec 1, 1997

8/980522

David C. Campbell - Bel Air MD
Gale A. Heslop - Carney MD

Black & Decker, Inc. - Newark DE

B23C 120

409131

A bit attaching arrangement for a power tool includes a bit locking member rotatable with respect to the output shaft of the power tool. A first gear is fixed to the bit locking member so that rotation of the first gear causes rotation of the locking member. A second gear is fixed to the output shaft so that rotation of the second gear causes rotation of the output shaft. A third gear engages both said first and second gear simultaneously and is capable of rotation by an operator of the power tool. Rotation of the third gear results in counter rotation between the bit locking member and the output shaft so as to result in securement of the bit to the shaft. A further aspect of the invention includes a pinion shaft onto which the third gear is mounted. The pinion shaft is slidably mounted to the power tool so that the third gear may be moved between a position where it engages both the first and second gears and can be used to tighten the bit in place, and a second position wherein it does not engage either of the gears and allows operation of the power tool.

6026576, Feb 22, 2000

Apr 28, 1999

9/300974

Richard Hurn - Bel Air MD
Judd Staples - Baltimore MD
Gregory Arnold - Shreveport LA
David Campbell - Bel Air MD

Black & Decker Inc. - Newark DE

B23D 4712

30391

The disclosed portable circular saw includes a motor having an axis, a housing enclosing the motor therein, a handle carried by the housing, an arbor operatively connected to the motor, the arbor having an axis of rotation substantially perpendicular to the motor axis, and a shoe supporting the housing thereon. The housing is inclined at an angle relative to the shoe. The handle is also disposed between the housing and the shoe. Preferably, the housing inclination angle is about 45. degree. The saw may also include a drive shaft disposed on the motor axis and a transmission mechanism connected to the arbor and the drive shaft. This transmission mechanism creates a torque in the rotational direction opposite to the rotational direction of the arbor. Preferably, the transmission mechanism includes a first gear disposed on the drive shaft, and a second gear disposed on the arbor, where the second gear meshes with the first gear. It is preferable that distance from the blade to the end of arbor is longer than distance from the blade to the drive shaft.

2013027, Oct 17, 2013

Apr 17, 2012

13/448816

David Charles Campbell - Bel Air MD, US
Marco Alessandro Mattucci - Baltimore MD, US

B23B 31/12

279 60

A chuck for a power tool having a rotatable drive shaft. The chuck includes a chuck body and an inner sleeve defining a cavity into which the chuck body is rotatably received. An outer sleeve is disposed concentrically around the inner sleeve, the outer sleeve being non-rotatably but axially slidably coupled to the inner sleeve. A cover plate may be provided non-rotatably coupled to the chuck body. A locking cup may be non-rotatably coupled to the power tool and disposed adjacent to the chuck. At least one locking element may be coupled to the cover plate. The locking element is biased to prevent rotational movement in at least one rotational direction between the cover plate and the locking cup, or between the cover plate and the outer sleeve.

2010000, Jan 7, 2010

Nov 25, 2008

12/277953

Jennifer R. Munn - Baltimore MD, US
Rachel Lombardo - Parkton MD, US
David C. Campbell - Bel Air MD, US

D05B 79/00

362 90, 362 89

A machine according to the present teachings can include a machine housing and a drive mechanism disposed in the machine housing and driving an output member. An input member can be associated with the machine housing for activating the drive mechanism. A working member can be driven by the output member. A light source can be coupled to the machine housing that projects UV light onto an area proximate to the working member. According to additional features, the light source can comprise a UV light source. According to other features, the light source can collectively define a light emitting device and a filter. The filter can allow black light to pass therethrough. The light emitting device can comprise an incandescent bulb, a light emitting diode, or a fluorescent bulb according to various examples.

8573324, Nov 5, 2013

Sep 14, 2012

13/617081

Terry L. Turner - Finksburg MD, US
David C. Campbell - Bel Air MD, US

Black & Decker Inc. - Newark DE

E21B 4/12

173217, 173216

A power tool has a mechanism for ejecting a battery pack which includes a receiving frame which defines a cavity to receive a battery pack. A receiving member is adjacent the cavity. The receiving member meshes with a member on the battery pack to hold the battery pack in the cavity. A biasing member is in the cavity adjacent the receiving member. The biasing member ejects the battery pack from the ejecting mechanism. A member retains the biasing member in the cavity. The member guides a portion of the battery pack meshing with the receiving member into contact with the biasing member such that when the battery pack is locked onto the frame, the biasing member is in a compressed condition and when the battery pack is an unlocked position, the biasing member ejects the battery pack from the frame.

2013027, Oct 24, 2013

Apr 23, 2012

13/453251

David C. Campbell - Bel Air MD, US
Steven J. Phillips - Ellicott City MD, US
Derek E.T. Muir - Daisy Hill, GB
Fugen Qin - Lutherville Timonium MD, US

B23B 31/12, B23B 31/10

279126, 279140

A power tool having a tool portion, a chuck and a lock. The tool portion has a housing, a motor, and a spindle driven by the motor. The chuck has a body coupled to the spindle for rotation therewith, and a sleeve rotatably disposed about the body. The lock has a first lock structure pivotally coupled to the housing about a pivot axis, and a second lock structure. The first lock structure has a first locking feature. The second lock structure has a second locking feature and is coupled to the sleeve for rotation therewith. Pivoting the first lock structure into a first pivot position positions the first locking feature in a rotational path of the second locking feature. Engagement of the first and second locking features inhibits rotation of the sleeve so that rotation of the spindle will cause corresponding rotation of the body relative to the sleeve.

2013012, May 23, 2013

Aug 9, 2012

13/570844

David C. Campbell - Bel Air MD, US
Mark D. Miller - Airville PA, US

BLACK & DECKER INC. - Newark DE

B25F 5/00

173 31, 173171

A power tool constructed in accordance to one example of the present disclosure can include a repositionable tool accessory. The repositionable tool accessory can be selectively coupled to a first mounting structure on the tool. The repositionable tool accessory can include a tool accessory housing, a rod, a roller, and a locking knob. The tool accessory housing can define a first rod opening and include engaging structure that is configured to cooperatively mate with the first mounting structure. The rod can slidably translate along the first rod opening. The roller can be rotatably coupled to a distal portion of the rod. The locking knob can be movable between an unlocked position wherein the rod is freely translatable along the first rod opening to locate the roller at different locations relative to the output member, and a lock position wherein the rod is fixed relative to the tool accessory housing.

5822864, Oct 20, 1998

May 31, 1996

8/655803

David C. Campbell - Bel Air MD
Gale A. Heslop - Carney MD
Lynn E. Lentino - Westminster MD
Michael R. Sell - Bel Air MD

Black & Decker, Inc. - Newark DE

B27B 900

30123

A viewing window for covering an aperture in a hand-held circular saw includes an optically transmissive member adapted to be coupled with the guard. The member is movable between a closed position, wherein the member substantially covers the aperture, and the open position, wherein the member at least partially uncovers the aperture, to allow the cleaning of the member. A structure is provided for biasing the member to the closed position.

7232120, Jun 19, 2007

Jul 19, 2005

11/184726

David C. Campbell - Bel Air MD, US
Robert H. Gifford - New Freedom PA, US
Louis A. Gibbons - Stevensville MD, US

Black & Decker Inc. - Newark DE

B25B 1/02

269139, 269184

A workbench has at least one drive member to clamp table members against one another. The drive member has a receiving tube and a crank tube. The receiving tube and crank tube are coupled with respect to one another for telescoping movement. One of the tubes has a threaded member and the other tube has a thread engaging member. A mechanism engages and disengages the thread engaging member into the threaded member such that in an engaged position, the crank tube can be rotated in the receiving tube for screw type movement. In a disengaged position, the crank tube is freely slidable for sliding movement in the receiving tube.