James E Hartmann

US Patent:

7290342, Nov 6, 2007

Filed:

Jul 26, 2004

Appl. No.:

10/898853

Inventors:

James R. Hartmann - Park Ridge IL, US
Ralf Bocka - Musberg, DE
Joseph Z. Wascow - Mundelein IL, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

B27B 9/02
B23D 45/16

US Classification:

30376, 30377, 30388, 403 98, 403111, 403325, 403329

Abstract:

A circular saw assembly of the type that includes a motor housing, a handle coupled to the motor housing, a generally circular saw blade disposed within a blade housing at a first end of the motor housing, and a foot member through which the blade extends for guiding the saw assembly along a work surface, where the circular saw assembly including a depth of cut locking system and an angle of cut locking system. The depth of cut locking system includes an arcuate bracket with an arcuate slot, and an engagement member extends through the slot and is operatively connected to the motor housing and slideable in the arcuate slot. The angle of cut locking system includes a bracket having an arcuate slot and an engagement member movable in the slot and configured to the bracket. A biasing member is provided to bias the engagement member, and at least one detent recess is provided to retain the engagement member therein.

US Patent:

7526980, May 5, 2009

Filed:

Jul 26, 2004

Appl. No.:

10/898875

Inventors:

Ralf Bocka - Musberg, DE
James R. Hartmann - Park Ridge IL, US
Joseph Z. Wascow - Mundelein IL, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

G05G 1/04

US Classification:

74525

Abstract:

A repositionable operating lever including a lever body having a handle and a generally hollow cylindrical housing, an inner end portion of which has a multi-faced wall configured to engage a multi-faced head portion of an adjusting member, an adjusting member positioned in the cylindrical housing and having a multi-faced head portion engaging the multi-faced wall of the inner end portion, a generally cylindrical end piece configured to fit within an outer end portion of the cylindrical housing, a biasing member having a inner end and a outer end, and wherein the lever body is capable of being moved in the outer direction relative to the adjusting member by manipulation overcoming the biasing force whereby the multi-faced head portion and the multi-faced wall disengage from one another, permitting relative rotation of the lever body and the adjusting member to reposition the lever body on the adjusting member.

US Patent:

20030150120, Aug 14, 2003

Filed:

Feb 12, 2002

Appl. No.:

10/074391

Inventors:

James Hartmann - Park Ridge IL, US
Craig Barrett - Schaumburg IL, US

International Classification:

B27B019/00

US Classification:

030/392000, 030/329000

Abstract:

A toolless blade clamp for a reciprocating saw is disclosed comprised of a clamp body that defines a cavity for receiving a saw blade, a wedging member that traverses the cavity, operating means that is coupled with the wedging member and biasing means that acts on the operating means. In a clamping position, the operating means urges the wedging member into contact with an edge of a saw blade to securely clamp it within the cavity. In a releasing position, the operating means is manually urged by the user to bring the wedging member free of the cavity to allow insertion or removal of the saw blade.

US Patent:

20110203121, Aug 25, 2011

Filed:

Feb 24, 2010

Appl. No.:

12/711429

Inventors:

James Richard Hartmann - Park Ridge IL, US

Assignee:

ROBERT BOSCH TOOL CORPORATION - Broadview IL
ROBERT BOSCH GMBH - Stuttgart

International Classification:

B27B 9/02
B23D 47/00

US Classification:

30377, 8352217

Abstract:

A depth of cut scale is provided for a circular saw having a foot, a pivoting assembly (including a rotary saw blade) pivotably mounted to the foot, and a depth of cut adjustment mechanism operable to lock the pivoting assembly at a depth of cut (DOC) orientation relative to the foot. The depth of cut scale includes a shelf associated with and pivotable with the pivoting assembly. The shelf includes an upper surface bearing indicia indicative of DOC. An elongated element is fixed at one end relative to the pivoting assembly and includes a pointer adjacent an opposite end arranged to point to the indicia on the upper surface. The pointer is fixed in relation to the shelf as the shelf pivots with the pivoting assembly. The elongated element may be a flexible element that is maintained in tension overlaying the upper surface, or a cantilevered arm.

US Patent:

51218038, Jun 16, 1992

Filed:

Aug 9, 1991

Appl. No.:

7/742863

Inventors:

James R. Hartmann - Chicago IL
Jennifer F. Uzumcu - Hoffman Estates IL
P. Sean Gallagher - Park Forest IL

Assignee:

Skil Corporation - Chicago IL

International Classification:

B25F 108

US Classification:

173171

Abstract:

An improved cordless motor-driven electric hand tool that has an elongated body portion with a tool bit-receiving chamber at one end and a housing at the other end having a battery-receiving chamber therein. An elongated tool bit storage chamber is formed in the housing above and/or below the battery-receiving chamber and has a cover that is pivotally mounted for open and closed positions. The housing is oval shaped to create a space above and/or below the battery-receiving chamber in which the tool bit storage chamber is formed.

US Patent:

40817040, Mar 28, 1978

Filed:

Feb 13, 1976

Appl. No.:

5/657850

Inventors:

Louis J. Vassos - Park Ridge IL
John W. Heinz - Morton Grove IL
James R. Hartmann - Chicago IL

Assignee:

Skil Corporation - Chicago IL

International Classification:

H02K 714

US Classification:

310 50

Abstract:

A cordless electric drill has a housing formed by two clam-shell sections secured together by a plurality of fasteners. These housing sections define a closed motor and gear compartment which receives a sub-assembly, the latter including a generally U-shaped gear box frame mounting a small D. C. electric motor, a plurality of reduction gears and a spindle. A drill chuck is mounted on the spindle. The sub-assembly and the housing sections include co-operating mounting formations, defined in part by projections and cavities, which mounting formations serve to mount the sub-assembly in place in response to securing the clam-shell housing sections together by the aforesaid fasteners.

US Patent:

D345870, Nov 14, 1989

Filed:

Sep 21, 1988

Appl. No.:

7/247458

Inventors:

David C. Danielson - New Canaan CT
James J. Hartmann - Indianapolis IN
John N. McGarvey - Drexel Hill PA
Alvin R. Tilley - Red Bank NJ
John M. Wuerz - Indianapolis IN

Assignee:

American Telephone and Telegraph Company - New York NY
AT&T Information Systems Inc. - Morristown NJ

US Classification:

D14244

US Patent:

45451230, Oct 8, 1985

Filed:

Apr 9, 1984

Appl. No.:

6/598070

Inventors:

James R. Hartmann - Chicago IL

Assignee:

SKIL Corporation - Chicago IL

International Classification:

B27B 1102

US Classification:

30393

Abstract:

A reciprocating jigsaw tool having a plurality of selectible fixed linear plunger and blade motions as well as fully adjustable orbital and manual or auto scrolling saw blade control. A single mode selector is provided to select between the above operational modes. The mode selector includes a cam to selectively limit the oscillatory motion of a pivotally mounted plunger upper swivel bearing carriage assembly thereby directly limiting the degree of orbital plunger motion. The mode selector further includes a gear segment in operative engagement with a rack member which, in turn, engages an integral scrolling interface member of the top-mounted scrolling adjustment knob. The scrolling interface member incorporates an annular ring having a gap therein adapted to inhibit upward travel of the rack which, in turn, inhibits orbital saw operation when the plunger and blade is positioned other than in the cut forwardly position. The scrolling interface further includes locking ridges adapted to engage the rack and to preclude rotation of the scrolling adjustment knob when either the orbital or fixed linear mode is selected.