Max Glen Davis

Address:

8911 San Benito Way, Dallas, TX 75218

VIN:

2V8HW34149R582634

Make:

VOLKSWAGEN

Model:

ROUTAN

Year:

2009

US Patent:

42727952, Jun 9, 1981

Filed:

Jun 4, 1979

Appl. No.:

6/045477

Inventors:

Max G. Davis - Plano TX
Charles M. Mueller - Forney TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G11B 362
G11B 5016
G11B 2302

US Classification:

360 99

Abstract:

An information storage system and recording cartridge includes features for precisely aligning a flexible magnetic recording disc with respect to a magnetic head transducer and a motor rotational means. The system includes a cartridge holder which is comprised of upper and lower members coupled together to form a protective housing for the cartridge. The holder has an open mouth through which the cartridge is inserted. The bottom of the cartridge has two elongated slots extending perpendicularly inward from opposite side walls and a recess extending perpendicularly inward from an end wall of the cartridge. The lower interior surface of the cartridge holder is equipped with two detents which extend perpendicularly inward from opposite sides thereof and mate with the elongated slots in the cartridge and an extension member extending perpendicularly inward from an end opposite the open end for mating with the recess on the cartridge to precisely locate and align the cartridge and disc. In a further feature the cartridge holder includes three spring members mounted in openings in the upper member to provide downward biasing pressure on top of the cartridge and an additional spring member mounted inside the holder at the end thereof for biasing the cartridge toward the open mouth, thereby facilitating removal of the cartridge. The cartridge and holder are mounted in a deck which functions as a base member.

US Patent:

42913462, Sep 22, 1981

Filed:

Jun 4, 1979

Appl. No.:

6/045142

Inventors:

Harold J. Beecroft - Austin TX
Max G. Davis - Plano TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G11B 2110
G11B 555

US Classification:

360 75

Abstract:

An information storage system for recording data on a flexible magnetic recording disc is provided. The information storage system includes an optoelectronic system for determining the position of a magnetic head transducer, which is used to read and/or write information on the disc, with respect to the disc. The optoelectronic system has a moveable shutter member with a plurality of apertures formed therein for moving along with the head. The shutter member moves with respect to a stationary mask member having first and second sets of apertures formed therein. As the shutter moves, selected apertures of the mask member are in registration with apertures in the shutter, thereby allowing light to pass therethrough, while other apertures of the mask member are blocked off by solid portions of the shutter, thereby blocking off light passage. The optoelectronic system senses which apertures of the mask member are open and which are blocked off and generates an electrical signal indicative thereof. Since the shutter movements correspond to head movements, the signal corresponds to the relative position of the head with respect to the disc.