Thomas F Dunlap

US Patent:

20120090926, Apr 19, 2012

Filed:

Oct 14, 2011

Appl. No.:

13/274209

Inventors:

Thomas F. DUNLAP - West Linn OR, US

International Classification:

B60T 1/06
A61H 3/04
B60T 7/08
F16D 63/00

US Classification:

188 68

Abstract:

The present invention is a safety braking system for a hand-pushed rollator, which allows the user to engage different operation modes: a park mode, a walk mode, and a brake mode. The present invention comprises a wheel mechanism, a cable assembly, and a handlebar mechanism. The wheel mechanism allows a wheel to rotate during walk mode, to engage the wheel with a parking brake during park mode, and to engage the wheel with a friction brake during brake mode. The wheel mechanism pivots the parking brake and the friction brake on a lever in order to switch between the different operation modes. The handlebar mechanism allows the user to shift between the different operation modes and is engaged to the wheel mechanism through the cable assembly. The handlebar mechanism uses two levers that are pushed and pulled by the user in order to shift between the different operation modes.

US Patent:

57723737, Jun 30, 1998

Filed:

Nov 20, 1995

Appl. No.:

8/560629

Inventors:

Philip J. Cronin - Gladstone OR
Lonnie G. Williams - Portland OR
Thomas F. Dunlap - West Linn OR
David C. Wood - Vancouver WA
Jon A. Bigley - Canton MI
Stuart Miller - Carlton OR
James D. Hensley - Clackamas OR

Assignee:

Warn Industries, Inc. - Milwaukie OR

International Classification:

F16B 3910

US Classification:

411120

Abstract:

A spindle nut and a locking device are disclosed for securing the nut on a spindle in a non-rotative position relative to the spindle. The assembly comprises the spindle nut, an antirotation spring and a spring backup plate mounted on the spindle. The antirotation spring and spring backup plate may be formed as a single unit.

US Patent:

56181434, Apr 8, 1997

Filed:

Nov 2, 1994

Appl. No.:

8/333500

Inventors:

Philip J. Cronin - Gladstone OR
Lonnie G. Williams - Portland OR
Thomas F. Dunlap - West Linn OR
David C. Wood - Vancouver WA

Assignee:

Warn Industries, Inc. - Milwaukie OR

International Classification:

F16B 3906

US Classification:

411220

Abstract:

A spindle nut and a locking device for securing the nut in a rotative position on a spindle. An anti-rotation spring and a back up plate are mounted on the spindle in a non-rotative manner with the back up plate in abutment with the bearings that rotatively mount the hub to the spindle. The back up plate has multiple grooves aligned with and arranged to receive multiple resilient tabs on the periphery of the anti-rotation spring. The tabs of the anti-rotation spring are formed to project axially from the spring. A flange of the nut has multiple slots around its periphery that are sized to receive a tab of the anti-rotation spring. A tool having extending ears that fit in the slots of the nut is utilized to install the nut on the spindle. The extending ears prevent the tabs of the spring from entering a slot of the nut until the tool is removed. As the nut is rotated by the tool, the nut abuts the anti-rotation spring.

US Patent:

55781675, Nov 26, 1996

Filed:

Jan 31, 1996

Appl. No.:

8/594537

Inventors:

Steven A. Switzer - Tempe AZ
Kenneth E. Stegall - Gilbert AZ
Thomas J. Dunlap - Scottsdale AZ
Colleen M. Albrecht - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

B23Q 300

US Classification:

1566541

Abstract:

The etching of a thin substrate (23) is performed using a holder (10). The holder (10) has a base (11) that has a cavity (20). The cavity (20) is pressurized to compensate for the pressure and stress that is applied to the substrate (23) by an etchant solution. The holder (10) also has a sequence of o-rings (22,24,26) that are used to hold the substrate (23) in place and to prevent etchant from leaking into the cavity (20) and attacking a bottom surface (32) of the substrate (23). The pressure necessary to hold the substrate (23) in place is applied by a cover ring (28) that is screwed onto the base (11).

US Patent:

62342894, May 22, 2001

Filed:

May 17, 1999

Appl. No.:

9/310887

Inventors:

Evan R. Baker - Camas WA
Kip E. Clohessy - Milwaukie OR
Fred L. Ewer - Clackamas OR
Thomas W. Giacomini - Livonia MI
Scott J. Pugliese - Portland OR
O. Lance Scrivens - Clackamas OR
Thomas F. Dunlap - West Linn OR
Jon A. Bigley - Livonia MI

Assignee:

Warn Industries, Inc. - Milwaukie OR

International Classification:

F16D 1104
F16D 1110
F16D 1322

US Classification:

192 6941

Abstract:

An annular actuator for moving a member axially to couple and un couple a drive member with a driven member of a vehicle drive train. The actuator encircles the drive and driven member. The actuator has a housing to which a diaphragm is mounted. A spring biases the diaphragm to move in one axial direction and withdrawal of air forces the diaphragm to move in the opposite axial direction. A shifting fork coupled to the diaphragm moves a clutch ring in the one axial direction to be coupled with only one of the drive and driven members and is coupled with both the drive and driven members when moved in the opposite direction. The actuator defines a sealed chamber that is totally non-rotatable with relative movement occurring between the shifting fork and the clutch ring.

US Patent:

59274557, Jul 27, 1999

Filed:

Jul 21, 1997

Appl. No.:

8/897355

Inventors:

Evan R. Baker - Camas WA
Thomas F. Dunlap - West Linn OR
Christopher J. Walter - Portland OR

Assignee:

Warn Industries - Milwaukie OR

International Classification:

F16D 4108

US Classification:

192 36

Abstract:

A bi-directional overrunning pawl-type clutch having a driving member mounted for power rotation, a driven member mounted for rotation adjacent the driving member, with each of the driving and driven members having pawl engaging shoulders, and a plurality of rigid pawls interposed between the driving and driven members. A control element is mounted for shifting movement between the driving and driven members to control the position of the pawls which are yieldably biased toward positions of engagement extending between the driving and driven members to produce driving engagement therebetween. The control element is shiftable to various positions to permit driving and overrunning in one direction or driving and overrunning in the opposite direction dependent upon the direction of rotation of the driving member.

Address:

6117 Canter Ln, West Linn, OR 97068

Phone:

(503)6553518

VIN:

WBXPC93467WF11847

Make:

BMW

Model:

X3

Year:

2007