Arthur J Treff

US Patent:

48322830, May 23, 1989

Filed:

Apr 25, 1988

Appl. No.:

7/185441

Inventors:

Arthur J. Treff - East Hartford CT
Donald R. Spaman - Middletown CT

Assignee:

Raymond Engineering Inc. - Middletown CT

International Classification:

G11B 1526

US Classification:

242192

Abstract:

A tape transport cartridge is presented having a pair of brakes for the drive belt, the brakes being positioned to increase the angle of separation of the drive belt from the magnetic tape. This increased angle of separation results in improved drive of the tape, and the dual brake arrangement also establishes a more nearly constant instantaneous velocity differential for the tape packs, resulting in a lower and more constant tape tension.

US Patent:

49656864, Oct 23, 1990

Filed:

Mar 31, 1989

Appl. No.:

7/331462

Inventors:

Paul R. Young - Cromwell CT
David W. Richard - Meriden CT
Arthur J. Treff - East Hartford CT
Christopher E. Staehly - East Haddam CT

Assignee:

Raymond Engineering Inc. - Middletown CT

International Classification:

G11B 1708

US Classification:

360 9807

Abstract:

A disc drive assembly for a magnetic disc memory unit is presented. The disc drive assembly has a stationary spindle to which a motor stator assembly is fastened by a wedge ring structure. The motor rotor assembly is constituted by a rotary hub mounted around the stator, the hub having a motor magnet mounted therein. A plurality of magnetic discs may be mounted on the exterior of the hub.