Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1994-06-01
1996-02-06
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
G11B 1532
Patent
active
054900204
ABSTRACT:
A high torsional stiffness low axial deflection stiffness flexible drive shaft apparatus is provided for driving a magnetic tape cassette and includes a drive shaft having opposite ends, a device for engaging the magnetic tape cassette and a pair of flexible diaphragms. A device is connected to one of the drive shaft ends, one of the flexible diaphragms, and is connectable to a motor for transmitting torsional force from the motor to the drive shaft via the flexible diaphragm. Another device is connected to the other end of the drive shaft, the other flexible diaphragm and the tape cassette engaging device for transmitting torsional force from the drive shaft to the engaging device via the other flexible diaphragm. Because the diaphragms are too delicate to handle thrust loads and because the torsional stiffness of the diaphragm degrades rapidly as its center is displaced axially with respect to the outer driving points, a device is operably connected to each torsional force transmitting device for transmitting thrust loads exerted along the axes of rotation of the drive apparatus. With this arrangement the drive apparatus can easily adapt for misalignment of the drive apparatus with the magnetic tape cassette to deliver a reliable rotating force.
REFERENCES:
patent: 2182711 (1939-12-01), Thomas
patent: 2435058 (1948-01-01), Thomas
patent: 2734359 (1956-02-01), Mulheim et al.
patent: 2863308 (1958-12-01), Flood
patent: 3050225 (1962-08-01), Ulman
patent: 3135949 (1964-06-01), Whyte
patent: 3589636 (1971-06-01), Brown
patent: 3854063 (1974-12-01), Bergman
patent: 3865331 (1975-02-01), Clever et al.
patent: 3883090 (1975-05-01), Hall, Sr.
patent: 3987645 (1976-10-01), Koster et al.
patent: 4000866 (1977-01-01), Schulz
patent: 4096711 (1978-06-01), Carlson et al.
patent: 4214457 (1980-07-01), Wade et al.
patent: 4342055 (1982-07-01), Osanai
patent: 4376997 (1983-03-01), Eggers
patent: 4411634 (1983-10-01), Hammelmann
patent: 4421496 (1983-12-01), Emerson et al.
patent: 4446497 (1984-05-01), Hirayama
patent: 4485416 (1984-11-01), Walters
patent: 4562497 (1985-12-01), Morinaga et al.
patent: 4586593 (1986-05-01), Danelson et al.
patent: 4587583 (1986-05-01), Tomita
patent: 4630149 (1986-12-01), Ida
patent: 4675756 (1987-06-01), Saitoh et al.
patent: 4707751 (1987-11-01), Ozaki et al.
patent: 4737136 (1988-04-01), Federn
patent: 4930030 (1990-05-01), Yabu et al.
"Reversible Motor/Generator Reel-To-Reed Drive", W. D. Thorne and A. C. Thorpe, IBM Tech. Discl. Bulletin, vol. 20, No. 10, Mar. 1978, pp. 4048-4049.
Heinz P. Bloch, "Improve Safety and Reliability of Pumps and Drivers", Hydrocarbon Processing pp. 123-125, Feb. 1977.
VDI Berichte, vol. 299, 1977, Ehrlenspiel et al, pp. 160-169.
Albrecht Thomas R.
Eaton James H.
International Business Machines - Corporation
Ometz David L.
Wolff John H.
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