Louis G Gitzendanner

US Patent:

41179978, Oct 3, 1978

Filed:

Jun 26, 1975

Appl. No.:

5/590455

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Honeywell Information Systems Inc. - Waltham MA

International Classification:

F16F 1500

US Classification:

248 20

Abstract:

In a data storage apparatus, a motor isolation mount for isolating a linear magnetic motor from a base plate so that forces imparted by the motor to the base plate do not excite resonance which might cause head-to-track positioning errors.

US Patent:

46461930, Feb 24, 1987

Filed:

Feb 21, 1985

Appl. No.:

6/703859

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Magnetic Peripherals Inc. - Minneapolis MN

International Classification:

G11B 2303

US Classification:

360133

Abstract:

A disk cartridge assembly includes a rotatable magnetic disk enclosed within a rectangular cartridge. Attached to the top and bottom covers of the cartridge are a plurality of leaf springs which urge the top and bottom sections toward and against one another. Resilient cloth liners are mounted to the inside surfaces of the top and bottom covers. As the leaf springs urge these sections toward one another, the liners engage the disk surface to prevent the disk from moving freely within the cartridge. The leaf springs are flexible in the axial direction but rigid in the radial direction, thus to maintain the top and bottom sections in alignment with one another.

US Patent:

40115895, Mar 8, 1977

Filed:

Jan 23, 1976

Appl. No.:

5/651677

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Honeywell Information Systems, Inc. - Waltham MA

International Classification:

G11B 5012
G01D 1516
F16C 102

US Classification:

360 98

Abstract:

An improved spring-loaded spindle lock shaft for disk drive media to prevent introducing eccentricity in a disk pack when the pack is attached to a motor driven spindle and is rotated thereby.

US Patent:

46202510, Oct 28, 1986

Filed:

May 13, 1983

Appl. No.:

6/494224

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Magnetic Peripherals Inc. - Minneapolis MN

International Classification:

G11B 560
G11B 1564

US Classification:

360103

Abstract:

An apparatus for positioning a magnetic transducer member with respect to a magnetic disk has an actuator which is rotated about an axis and includes an arm having a first end secured to the actuator for rotation of the arm about the axis. The arm has an oppositely disposed second end. A load spring member has a first end and a second end and is secured at its first end to the second end of the arm. A gimbal spring is secured to the second end of the load spring member and supports the transducer member. The gimbal spring permits the transducer member to move vertically and to pitch and roll as it flies over the rotating surface of the magnetic disk. The arm, load spring member, and gimbal spring are symmetrical with respect to a straight line running from the axis of rotation of the actuator to the center of the transducer. The transducer member is a two ski head and has a magnetic read/write core secured to the trailing edge of one of the skis. The center line of the core gap is substantially parallel to the trailing edge of the ski.

US Patent:

46202480, Oct 28, 1986

Filed:

Sep 4, 1984

Appl. No.:

6/646537

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Magnetic Peripherals Inc. - Minneapolis MN

International Classification:

G11B 5012
B01F 302
G05D 2100

US Classification:

360 97

Abstract:

A disk drive is provided with a vent tube which is long (i. e. , 20 inches) compared to its bore (i. e. , 0. 013 inch) to minimize diffusion of water vapor into the drive without seriously affecting pressure gradients along the length. Minimum bore diameters are given for specified lengths of vent tube. Conveniently, a desiccant is employed with a heater to absorb water vapor admitted to the drive and to expel water vapor when the drive is operated. A thermally-operated valve is also employed to expel water vapor when the drive operates. The desiccant may be employed in a chamber separated from the disk chamber, whereupon pressure valves are provided to adjust the pressures in the drive.

US Patent:

47018186, Oct 20, 1987

Filed:

Feb 18, 1986

Appl. No.:

6/830146

Inventors:

Louis G. Gitzendanner - Oklahoma City OK

Assignee:

Magnetic Peripherals Inc. - Minneapolis MN

International Classification:

G11B 554
G11B 2108

US Classification:

360106

Abstract:

This invention describes a means and method for moving an arm in precise angular increments to a degree of precision far beyond the capacity of a normal reduction gear assembly acting at the impetus of a stepper motor. At rest a set of paired and unequal high precision gear sets hold the member in place. To accomplish movement, they are decoupled and a normal reduction gear mechanism is employed to drive the member to the approximate location desired. The more precise location of the member is accomplished by the recoupling the high precision gear sets. Thus, without high precision movement a high precision location is attained.