Robert G Walsh

US Patent:

6727511, Apr 27, 2004

Filed:

Nov 21, 2001

Appl. No.:

10/006449

Inventors:

Richard T. Cusick - Laurel MD
Robert F. Walsh - Tucson AZ
Dennis K. Wickenden - Woodbine MD

Assignee:

The Johns Hopkins University - Baltimore MD

International Classification:

G01N 2186

US Classification:

25055929, 250221

Abstract:

A sensor array system for detecting the position of an object or energy source. The system includes a plurality of sensors, each sensor having a limited field of view and being capable of detecting an object or energy source that is positioned within its field of view. The fields of view of at least some of the sensors overlap the fields of view of other sensors, and the overlapping fields of view define unique spatial regions. A data acquisition system is operatively connected to the plurality of sensors and is used to determine which sensors simultaneously detect an object or energy source, thereby determining the unique spatial region in which the object or energy source is located.

US Patent:

40806677, Mar 28, 1978

Filed:

Jun 20, 1972

Appl. No.:

5/264546

Inventors:

Robert M. Walsh - Moorestown NJ
John V. Droughton - Keyport NJ

Assignee:

AQM Corporation

International Classification:

E03D 120
E03D 134
E03D 502
E03D 510

US Classification:

4415

Abstract:

Apparatus is provided for installation in the water tank of a toilet to reduce the quantity of water discharged from the tank during flushing while maintaining a satisfactory flushing action. The apparatus comprises a pair of flat, flexible partition elements which extend in a bowed manner between the front and rear walls of the tank on opposite sides of the tank-drain. A bead of deformable gasket material extends along the side and bottom edges of each partition, and the bead is urged into frictional engagement with the walls by the tendency of the partition to straighten from its bowed position. The partition elements form pockets on each side of the drain for containing water near the bottom of the tank while permitting water above the drain and the pockets to flow down the drain when the toilet is flushed.

US Patent:

D3855830, Oct 28, 1997

Filed:

Jul 15, 1996

Appl. No.:

D/057034

Inventors:

Robert S. Walsh - Holland PA

International Classification:

2002

US Classification:

D20 42

US Patent:

50777360, Dec 31, 1991

Filed:

Feb 13, 1990

Appl. No.:

7/480019

Inventors:

Robert H. Dunphy - Holland PA
Robert Walsh - Boulder CO
John H. Bowers - Clarksburg NY
George A. Rudeseal - Boulder CO

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

G06F 1110

US Classification:

371 101

Abstract:

The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form redundancy groups of N+M parallel connnected disk drives to store data thereon. The N+M disk drives are used to store the N segments of each data word plus M redundancy segments. In addition, a pool of R backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a redundancy group that fails during operation. The number N of data segments in each data redundancy group can be varied throughout the disk drive memory to thereby match the characteristics of the input data or operational parameters within the disk drive memory. Furthermore, a group of U unassigned disk drives can be maintained as a stock of disk drives that can be powered up as needed and assigned to either a redundancy group or to the pool of backup disk drives.

US Patent:

49146564, Apr 3, 1990

Filed:

Jun 28, 1988

Appl. No.:

7/212434

Inventors:

Robert H. Dunphy - Holland PA
Robert Walsh - Boulder CO
John H. Bowers - Clarksburg NJ

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

G06F 722

US Classification:

371 102

Abstract:

The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.

US Patent:

49892053, Jan 29, 1991

Filed:

Jan 11, 1990

Appl. No.:

7/463591

Inventors:

Robert H. Dunphy - Holland PA
Robert Walsh - Boulder CO
John H. Bowers - Clarksburg NJ

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

G06F 1110

US Classification:

371 101

Abstract:

The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.

US Patent:

49892061, Jan 29, 1991

Filed:

Jan 11, 1990

Appl. No.:

7/463512

Inventors:

Robert H. Dunphy - Holland PA
Robert Walsh - Boulder CO
John H. Bowers - Clarksburg NJ

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

G06F 1120

US Classification:

371 101

Abstract:

The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.