Mechanism for precise linear movement, and apparatus using such

Details Mechanism for precise linear movement, and apparatus using such Mechanism for precise linear movement, and apparatus using such

1990-02-02

1992-06-23

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

369215, 369244, G11B 2102, G11B 2106

Patent

active

051249723

ABSTRACT:
In an apparatus (1) for scanning an information-carrier disc (2) a scanning device (10) which is movable in a radial direction of the disc (2) is connected to a gear rack (16) which extends in the radial direction (11). The gear rack (16) can be driven via a gear mechanism (16) comprising a worm wheel (21), which is rotatable about a shaft (23) which is inclined relative to the plane of the disc (2), and a supporting member (27) which is coaxially connected to the worm wheel and which has a conical surface (26) provided with a spiral ridge (28) whose cross-sectional shape corresponds to the flank geometry of the gear rack (16) to drive the gear rack (16) (FIG. 1).

REFERENCES:
patent: 3773335 (1973-11-01), Kato
patent: 4347926 (1982-09-01), Alter et al.
patent: 4479745 (1984-10-01), Johnson et al.
patent: 4878138 (1989-10-01), Ando et al.
IBM Technical Disclosure Bulletin, vol. 22, No. 9, Feb. 1980, (p. 4152).

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