Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1982-10-14
1986-07-22
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 97, G11B 1704, G11B 5016
Patent
active
046023062
ABSTRACT:
A flexible magnetic disc, usually rotatably housed in a square, apertured envelope, is loaded through an entrance slot in the front face of a housing to a preassigned working position for data transfer contact with a pair of transducer heads on its opposite sides. In the working position the disc is engaged between a socketed drive hub assembly driven by a motor and a clamp assembly including a flanged centering cone. Rotatably carrying the clamp assembly, a swing arm is pivotable between a clamping position, where the disc is engaged between the clamp and hub assemblies for joint rotation therewith, and an unclamping position where the clamp assembly disengages the disc. For pivoting the swing arm between the clamping and unclamping positions a hand lever is provided on the front face of the housing and linked to the swing arm. The hand lever is normally oriented approximately parallel to the entrance slot, holding the swing arm in the unclamping position and admitting the disc to be inserted into the slot. When turned 90 degrees to a position where it crosses and blocks the entrance slot, following the insertion of the disc therein, the hand lever causes the swing arm to pivot to the clamping position.
REFERENCES:
patent: 3678481 (1972-07-01), Dalziel et al.
patent: 3879757 (1975-04-01), Elliott et al.
patent: 4040106 (1977-08-01), Medley
patent: 4405957 (1983-09-01), Vorbach et al.
patent: 4413294 (1983-11-01), Beijer
patent: 4445156 (1984-04-01), Fujimoto
R. E. Baker et al, "Diskette Drive Latch Interlock and Cam Device," IBM Tech. Disc. Bull., Feb. 1976, vol. 18, No. 9, pp. 3020-3021.
J. L. Neubauer et al, "Low Profile Diskette Drive," IBM Tech. Disc. Bull., Mar. 1978, vol. 20, No. 10, pp. 4066-4068.
Teac Corporation
Wolff John H.
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