David L Sutton

US Patent:

44279051, Jan 24, 1984

Filed:

Jun 16, 1983

Appl. No.:

6/504082

Inventors:

David A. Sutton - Santa Ynez CA

Assignee:

DMA Sytems Corporation - Goleta CA

International Classification:

H02K 4102

US Classification:

310 13

Abstract:

A linear motor and side mounted outboard carriage combination comprising an elongated magnetic core having a longitudinal motion axis, an armature associated with the core and being movable along the axis, plural carriage ways secured on opposite sides of the core, and a carriage assembly mounted on the ways and connected to the armature for movement therewith along the axis, portions of the carriage assembly being mounted on the opposite sides of the core and being so arranged that the center of gravity of the carriage assembly and all elements connected thereto is approximtately aligned with the center of force of the core.

US Patent:

43762948, Mar 8, 1983

Filed:

Nov 16, 1981

Appl. No.:

6/321884

Inventors:

Markus Meier - Carpinteria CA
David A. Sutton - Santa Ynez CA

Assignee:

DMA Systems Corporation - Goleta CA

International Classification:

G11B 2102
G11B 554

US Classification:

360105

Abstract:

Apparatus for supporting a magnetic head assembly adjacent a recording surface and for loading and retracting the head assembly. The apparatus comprises a rigid, cantilevered support arm; a thin, resilient, gimbal sheet attached to the free end of the support arm; a magnetic head assembly including a tranducing element carried by the gimbal sheet; a lift bail mounted on the head assembly; a spring-loaded force arm rotatably attached to the support arm for applying a force to the head assembly on the side thereof opposite to the transducing side thereof; a lifting finger attached to the force arm at the point where the force arm engages the head assembly, the lifting finger extending into but not engaging the lift bail when the force arm is engaging the head assembly; a pivot arm for engaging the force arm and for moving the force arm out of contact with the head assembly, the lifting finger engaging the lift bail when the force arm is moved for retracting the head assembly from the recording surface; and a centrally mounted actuator arm including a caming surface for operating the pivot arm when the support arm is retracted so as to provide for a symmetrical lift force in a space saving design.

US Patent:

41509510, Apr 24, 1979

Filed:

Sep 19, 1977

Appl. No.:

5/834224

Inventors:

Gene A. Capelle - Goleta CA
David G. Sutton - Huntington Beach CA
Sidney W. Benson - Palos Verdes Estates CA

Assignee:

The Aerospace Corporation - El Segundo CA

International Classification:

G01N 2126
G01N 2138
G01N 2764

US Classification:

23232E

Abstract:

A method and apparatus for the quantitative and qualitative analysis of the elemental composition of materials in concentrations as low as a few atoms, or molecules, per cubic centimeter. When introduced into a gas stream containing an excess of an energetic metastable species of nitrogen or noble gas, the material, if atomic, is rapidly and repeatedly excited, or, if molecular, it is decomposed and subsequently certain component atoms of the molecule are excited, and thereupon fluoresce at their characteristic wavelength(s). The wavelength(s) and intensity of the emitted light (fluorescence) are determinative respectively of the identity and the concentration of the atoms of the different elements present.

US Patent:

45300208, Jul 16, 1985

Filed:

Jun 6, 1984

Appl. No.:

6/617887

Inventors:

David A. Sutton - Santa Ynez CA

Assignee:

DMA Systems - Goleta CA

International Classification:

G11B 558
G11B 2110
G11B 2336

US Classification:

360 77

Abstract:

A runout correction pattern is recorded on the peripheral track of the disk during the initial recording of the data stored thereon. The runout correction pattern comprises an integer number of sequentially recorded groups, each comprised of an increment of full track erasure, a like increment of high transition density automatic gain control information, a first burst of servo control information, and a second burst of servo control information. Previously necessary clock tracks are not incorporated. The bursts of servo control information are recorded "off-track" by one-half of the center line to center line spacing between adjacent tracks so that all first bursts are to one side of the center line of the track and all second bursts are to the opposite side of the center line of the track. Decoding of the runout correction patterns by a positionally fixed playback transducer establishes runout correction information which may be provided to control, as a function of rotational angle of the disk, the servo mechanism adjusting the playback transducer position during playback of the data stored on the disk.

US Patent:

44491557, May 15, 1984

Filed:

Nov 16, 1981

Appl. No.:

6/321336

Inventors:

Markus Meier - Carpinteria CA
David A. Sutton - Santa Ynez CA

Assignee:

DMA Systems Corporation - Goleta CA

International Classification:

G11B 2120
G11B 560

US Classification:

360104

Abstract:

In an apparatus of the type including a magnetic transducer head adapted for flying on a fluid bearing in close proximity to a transducing surface and a gimbal apparatus to which the head is mounted for flying so as to provide flexural freedom of rotation of the head around roll and pitch axes parallel to the transducing surface and flexural freedom of translation in the direction of an axis perpendicular to the surface while restraining rotation of the head about the axis perpendicular to the surface and translation of the head in directions parallel to the surface, the gimbal apparatus comprising a thin, resilient, gimbal sheet having an external shape and interior openings defining an outer ring attachable to a gimbal sheet support at substantially opposite points on the outer ring and an inner ring spaced apart from the outer ring and attached to it by a pair of webs intersecting the outer ring at opposite interior edges between the points at which the outer ring is attached to the gimbal sheet support, the inner ring being attached to the transducer head at a point between the two webs, there is disclosed an improvement wherein both of the outer and inner rings have material removed therefrom to form a modified truss-type structure to increase the flexural freedom of translation in the direction of the axis perpendicular to the surface without upsetting the rigidity of the gimbal sheet in the plane thereof.