Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1979-03-09
1981-07-21
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 75, 360103, G11B 548, G11B 554, G11B 2102
Patent
active
042801567
ABSTRACT:
A ramp-launched read/write device for a data carrier includes an arm, a loading spring having a part fixedly connected to the said arm and a free end part, a platform incorporating at least one read/write transducer, a carrier member to carry the platform, and a guide member for controlling the position of the platform in relation to the data carrier. The guide member is made up of a level surface and at least one ramp, and is arranged to cooperate with the said guide member for bringing the platform to a first, rest position and a second read/write position close to the data carrier to allow the data carrier to be read from or written on. The carrier member includes a suspension spring which has one end fixedly connected to the arm and a free end adapted to contact with the platform. The guide member is fixedly but flexibly connected to the arm and the said free end part of the loading spring contacts the guide member in accordance with the positions of the platform. An anti-vibration member in the form of a spring has one end fixedly connected to the arm and its free end rests against the free end of the suspension spring of said carrier member. The carrier member is shaped to enable the platform to move between the said first and second positions while remaining parallel to itself. To this end the carrier member includes a frame enclosing the platform which is carried by two substantially parallel arms which bend through approximately 180.degree. before connecting up with the central areas of the carrier.
REFERENCES:
patent: 3896495 (1975-07-01), Beecroft
patent: 3956770 (1976-05-01), McWhinnie et al.
patent: 4017898 (1977-04-01), Toombs et al.
patent: 4120010 (1978-10-01), Mitsuya et al.
Compagnie Internationale pour l'Informatique -CII-Honeywell Bull
Wolff John H.
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