Richard Gene Krum

US Patent:

6362933, Mar 26, 2002

Filed:

Feb 24, 1997

Appl. No.:

08/793474

Inventors:

Joseph M. Sampietro - Tarzana CA
Khosrow Mohajerani - Newbury Park CA
Anoush M. Fard - Agoura Hills CA
Richard G. Krum - Thousand Oaks CA
Jeffrey G. Barina - Somis CA
Muhammad A. Hawwa - Simi Valley CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 554

US Classification:

360105

Abstract:

A system for loading a transducing head ( ) to a flying elevation proximate a rotating surface of a disc ( ) is disclosed. The system includes a piezoelectric device ( ) that is selectively expanded and contracted to control a height of the head ( ) on a flexure spring ( ) from the surface of the disc ( ). The system preferably includes control circuitry ( ) for generating electrical control signals to manage the expansion and contraction of the piezoelectric device ( ) according to operating characteristics of the disc ( ).

US Patent:

6542328, Apr 1, 2003

Filed:

Oct 31, 2001

Appl. No.:

10/000685

Inventors:

Chad R. Harrison - Oklahoma City OK
Eldon L. Nelson - Oklahoma City OK
David S. Allsup - Oklahoma City OK
Jackson W. Nichols - Edmond OK
Mohammad N. Ahmad - Oklahoma City OK
Richard G. Krum - Morgan Hill CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 1702

US Classification:

360 9703, 360 9702

Abstract:

A stationary disc separator plate for use in a disc drive to suppress turbulence near a disc drive read/write head used to read data from and write data to a rotatable disc. The stationary plate is supported adjacent the disc and has substantially circular inner and outer circumferences. A leading edge and a trailing edge of the plate define an open portion to accommodate radial movement of the head adjacent the disc. A trailing edge air dam disposed at the trailing edge of the plate diverts a substantial portion of an airflow generated by rotation of the disc away from the open portion to reduce an airflow velocity at the head. In disc drives having multiple discs, a plate is preferably disposed between each pair of adjacent discs. Air vents preferably extend through the thickness of the plate to reduce aerodynamic drag and hence power consumption by the drive.

US Patent:

6826009, Nov 30, 2004

Filed:

Aug 30, 2002

Appl. No.:

10/232639

Inventors:

John E. Scura - Paso Robles CA
Richard G. Krum - Morgan Hill CA

Assignee:

General Electric Capital Corporation - Beverly Hills CA

International Classification:

G11B 3314

US Classification:

360 9703

Abstract:

A disk drive including a disk drive base. The disk drive further includes at least one rotatable disk including a disk surface extending to an outer disk edge. The disk drive further includes a head stack assembly rotatably attached to the disk drive base in operable communication with the disk. The disk drive further includes a filter coupled to the disk drive base. The filter includes a filter support disposed adjacent to the outer disk edge, and at least one filter element attached to the filter support disposed along the disk surface for filtering disk rotation induced airflow.

US Patent:

6847506, Jan 25, 2005

Filed:

Feb 28, 2003

Appl. No.:

10/377572

Inventors:

Chen-Chi Lin - San Jose CA, US
Richard G. Krum - Thousand Oaks CA, US

Assignee:

Western Digital Technologies, Inc. - Lake Forest CA

International Classification:

G11B 555

US Classification:

3602658

Abstract:

Disclosed is an actuator for use with a disk drive having a coil assembly designed to aid in heat convection from the coil of the coil assembly. The actuator includes a body portion for pivotally coupling to the disk drive and an actuator arm cantilevered from the body portion for supporting a head gimbal assembly (HGA). The actuator further includes a coil assembly having a coil and a fork. The fork is cantilevered from the body portion in an opposite direction from the actuator arm and includes a pair of opposed prongs to mount the coil. At least one of the prongs of the fork includes at least two opposed fins to aid in the convection of heat from the coil.

US Patent:

6940698, Sep 6, 2005

Filed:

Feb 28, 2003

Appl. No.:

10/376958

Inventors:

Chen-Chi Lin - San Jose CA, US
Richard G. Krum - Thousand Oaks CA, US

Assignee:

Western Digital Technologies, Inc. - Lake Forest CA

International Classification:

G11B021/08
G11B005/55

US Classification:

360265, 360 9702

Abstract:

Disclosed is an actuator for use with a disk drive having a coil assembly including a bobbin to aid in heat convection from the coil of the coil assembly. The actuator includes a body portion for pivotally coupling to the disk drive and an actuator arm cantilevered from the body portion for supporting a head gimbal assembly (HGA). The actuator further includes a coil assembly having a fork, a coil, and a bobbin. The fork is cantilevered from the body portion in an opposite direction from the actuator arm and includes a pair of opposed prongs to mount the coil and the bobbin therebetween. The bobbin includes at least two opposed fins to aid in the convection of heat from the coil.

US Patent:

D589136, Mar 24, 2009

Filed:

Apr 27, 2007

Appl. No.:

29/274504

Inventors:

Barton John Kenyon - Ashfield, AU
David B. Sears - Woodland Hills CA, US
Michael Bruce Moir - Newbury Park CA, US
Michael David Bednar - Playa del Rey CA, US
Richard G. Krum - Thousand Oaks CA, US

Assignee:

ResMed Motor Technologies Inc. - Chatsworth CA

International Classification:

2902

US Classification:

D24110, D24164

US Patent:

D619700, Jul 13, 2010

Filed:

Feb 13, 2009

Appl. No.:

29/311305

Inventors:

Barton John Kenyon - Ashfield, AU
David B. Sears - Woodland Hills CA, US
Michael Bruce Moir - Newbury Park CA, US
Michael David Bednar - Playa del Rey CA, US
Richard G. Krum - Thousand Oaks CA, US

Assignee:

ResMed Motor Technologies Inc. - Chatsworth CA

International Classification:

2902

US Classification:

D24110, D24164

US Patent:

20140069428, Mar 13, 2014

Filed:

Aug 15, 2013

Appl. No.:

13/967609

Inventors:

- Bella Vista, AU
Steven Paul Farrugia - Lugarno, AU
Aleksandr S. Nagorny - Canoga Park CA, US
Richard G. Krum - Camarillo CA, US
Joseph M. Sampietro - Tarzana CA, US

Assignee:

RESMED LIMITED - Bella Vista

International Classification:

A61M 16/00
A61M 16/06
A61M 16/20

US Classification:

12820421

Abstract:

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection.