Roy L Wood

Address:

33 Acorn Cir APT 202, Towson, MD 21286

Phone:

(540)4288780

VIN:

4JGCB65E47A049569

Make:

MERCEDES-BENZ

Model:

R-CLASS

Year:

2007

US Patent:

6366432, Apr 2, 2002

Filed:

Oct 26, 2000

Appl. No.:

09/698812

Inventors:

Srinivas Tadepalli - Oklahoma City OK
Kenneth L. Pottebaum - Yukon OK
Roy L. Wood - Yukon OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 548

US Classification:

360266, 3602642

Abstract:

Apparatus for providing nominally laminar flow of air currents in a disc drive. An actuator supports a head adjacent a rotatable disc and includes a rigid actuator arm with opposing planar top and bottom surfaces and a pair of opposing tapered surfaces which taper to a trailing edge. The top, bottom and tapered surfaces define a cross-sectional enclosure to provide nominally laminar flow of air currents adjacent the actuator arm induced by rotation of the disc. A channel is formed in the enclosure by a plurality of adjoining recessed surfaces to at least partially recess a head conductor along the length of the actuator arm within the enclosure to prevent obstruction of the air currents by the conductor. The conductor is preferably a flex circuit with a semi-flexible dielectric layer which supports a plurality of conductive traces.

US Patent:

6377420, Apr 23, 2002

Filed:

Sep 20, 2000

Appl. No.:

09/665815

Inventors:

Srinivas Tadepalli - Oklahoma City OK
Roy Lynn Wood - Yukon OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 3314

US Classification:

360 9702

Abstract:

A disc drive having reduced mechanical vibration is disclosed. An annular viscoelastic damper is sandwiched beneath the head disc assembly cover against the bearing assembly of the actuator to dampen mechanical vibrations transmitted by the cover to the actuator assembly. The damper is an annular disc made of a composite of a layer of viscoelastic polymer and a backing stiffening layer.

US Patent:

6392833, May 21, 2002

Filed:

Jul 13, 1999

Appl. No.:

09/352487

Inventors:

Roy L. Wood - Yukon OK
Jason D. Gregg - Oklahoma City OK

Assignee:

Seagate Technology, LLC - Scotts Valley CA

International Classification:

G11B 1546

US Classification:

360 7303, 360 69

Abstract:

Apparatus and method for improved operational performance of a disc drive by temporarily decreasing disc rotational velocity to reduce self-excited mechanical resonance established within the drive. The disc drive is first initialized by applying current to the spindle motor to accelerate the disc from rest to a nominal operational rotational velocity. Once initialized, the disc drive is operated in a normal mode, as the temperature of the drive increases from an initial, ambient temperature to an equilibrium temperature. During such operation, when the disc drive detects the presence of a self-excited mechanical resonance, the disc drive proceeds to temporarily decrease the rotational velocity of the disc to a reduced velocity to reduce the effects of the self-excited mechanical resonance. Thereafter, the rotational velocity of the disc is restored to the nominal velocity provided the self-excited mechanical resonance is no longer detected.

US Patent:

6462902, Oct 8, 2002

Filed:

Jun 4, 1999

Appl. No.:

09/326066

Inventors:

Erming Luo - Moore OK
Roy L. Wood - Yukon OK
John D. Stricklin - Oklahoma City OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 17038

US Classification:

360 9912, 369 9808

Abstract:

Apparatus and method for individually clamping discs in a disc stack assembly to improve mechanical shock resistance of a disc drive. A clamping spacer includes a circumferentially extending body portion having a hub contact surface rigidly affixable to a hub of a spindle motor used to rotate first and second discs. The clamping spacer further includes top and bottom spring flanges which extend radially from the body portion away from the spindle motor hub so that the body portion and the spring flanges form a generally c-shaped cross-section. When the body portion is affixed to the spindle motor hub above the first disc and below the second disc, the bottom spring flange exerts a first axially directed clamping force upon the first disc and the top spring flange independently exerts a second axially directed clamping force upon the second disc.

US Patent:

6477000, Nov 5, 2002

Filed:

Dec 31, 1997

Appl. No.:

09/001788

Inventors:

Kenneth Lee Pottebaum - Yukon OK
Roy Lynn Wood - Yukon OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 3314

US Classification:

360 9702

Abstract:

An apparatus and method for minimizing damage to a disc drive assembly subjected to non-operational shock. The disc drive has rotatable discs upon which data can be written and read by read/write heads supported by and controllable by an actuator assembly having actuator arms moveable over the complete data containing surfaces of the discs. A disc snubber is supported in apertures in the actuator arms, the disc snubber having bumper arms radially extending to nest the outer perimeters of the discs when the disc drive assembly is in its non-operational mode. The disc snubber is in clearing relationship to the discs in the operational mode. The disc snubber is disposed to dampen disc deflection caused by non-operational shock, thereby avoiding deleterious actuator arm/disc contact.

US Patent:

6498703, Dec 24, 2002

Filed:

Dec 18, 2001

Appl. No.:

10/024821

Inventors:

Nigel F. Misso - Yukon OK
Steve S. Eckerd - Oklahoma City OK
Roy L. Wood - Yukon OK
John D. Stricklin - Oklahoma City OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 554

US Classification:

3602564

Abstract:

An inertial spring latch with a contact post is disclosed for use in latching an actuator assembly of a data storage device. The actuator assembly includes a contact arm that cooperates with the contact post to restrict movement of the actuator assembly when the data storage device is in a non-operating mode. The inertial spring latch includes a latch body adjacent the actuator assembly, a forward arm extending in a first direction from the latch body and a spring member extending from the forward arm, the spring member supporting the contact post. The contact post inhibits movement of the actuator assembly by decelerating the movement of the actuator assembly upon impact of the contact arm with the contact post. Both the contact post and the spring member deflect to dampen the energy of motion of the actuator assembly, upon impact of the contact arm with the contact post.

US Patent:

6567242, May 20, 2003

Filed:

Dec 18, 2001

Appl. No.:

10/024819

Inventors:

Nigel F. Misso - Yukon OK
Steve S. Eckerd - Oklahoma City OK
Roy L. Wood - Yukon OK
John D. Stricklin - Oklahoma City OK

Assignee:

Seagate Technology - Scotts Valley CA

International Classification:

G11B 2108

US Classification:

3602651

Abstract:

A compressive limit stop for limiting travel of an actuator assembly of a data storage device is disclosed. The compressive limit stop separates a first pole piece from a second pole piece of the data storage device, each pole piece adjacent the actuator assembly, the compressive limit stop includes a rigid body with a top flange adjacent the second pole piece and a bottom flange adjacent the first pole piece, an inner portion having a diameter less than the diameter of the top flange disposed between the top and bottom flanges forming a channel between the flanges and a compressive sleeve with an inner wall adjacent each flange while enclosing the channel to form a gap between the inner portion and the inner wall. The compressive sleeve deflects and compresses between the actuator assembly and the inner portion to decelerate movement of the actuator assembly, upon impact of the contact arm with the contact post.

US Patent:

6542335, Apr 1, 2003

Filed:

Jul 15, 1999

Appl. No.:

09/353405

Inventors:

Nigel F. Misso - Bethany OK
Steve S. Eckerd - Oklahoma City OK
Roy L. Wood - Yukon OK
John D. Stricklin - Oklahoma City OK

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 548

US Classification:

3602562

Abstract:

An actuator latch cooperating with a magnetic assembly for latching an actuator assembly of a data storage device is provided. The magnetic assembly includes a magnet secured to one of a pair of pole pieces. The actuator latch includes a latch body adjacent the magnet assembly; a forward arm extending in a first direction from the latch body, a first ferromagnetic member supported by the forward arm disposed between the pair of pole pieces interacting with the magnet to maintain the actuator assembly in an un-latched position during operation of the data storage device; a trailing arm extending in a second direction from the latch body; and a pair of ferromagnetic members supported by the trailing arm disposed between the pair of pole pieces interacting with the magnet to secure the actuator assembly in a latched position during non-operation of the data storage device.