Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Reexamination Certificate
1997-10-03
2001-01-16
Levy, Stuart S. (Department: 2754)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
C360S074200
Reexamination Certificate
active
06175464
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an autoreverse mechanism mainly in a cassette tape recorder, which is designed to ensure both the forward mode and reverse mode by a simple manipulation and a simple structure of adding minimum parts to a conventional unidirectional playback mechanism in a forward-reverse switching mechanism.
2. Description of the Related Art
A typical autoreverse mechanism of the conventional type has a slidable head base on which a second head base carrying forward and reverse heads is provided, and stitches between the forward head and reverse head.
The conventional autoreverse mechanism inevitably has a large size, making its compact design difficult, and has such a complex structure as to be prone to cause malfunction and make tape running adjustment difficult.
SUMMARY OF THE INVENTION
Accordingly, it is an objective of the present invention to provide and autoreverse mechanism which is designed to overcome the conventional shortcoming.
To achieve this object, according to one aspect of this invention, there is provided an autoreverse mechanism in a tape recorder system having a single magnetic head for forward playback (recording) and a single magnetic head for reverse playback (recording), both mounted on a head base, which mechanism comprises a select-lever retaining groove formed on a flat surface of a main body plate; a select lever, retained in the select-lever retaining groove, for selecting between forward and reverse modes; and a forked guide hole so formed as to permit the head base to move forward in inclination from a position of the select lever in the selected forward or reverse mode.
The above-described structure can accomplish forward and reverse modes by simply adding one part to the conventional autoreverse mechanism, thus ensuring a compact and lighter design, stable tape running operation and cost reduction, so that this mechanism is particularly suitable for use in a microcassette tape recorder.
REFERENCES:
patent: 4463396 (1984-07-01), Osani
patent: 4581665 (1986-04-01), Ito et al.
patent: 4799116 (1989-01-01), Ida et al.
patent: 4935831 (1990-06-01), Shimbo
patent: 5063455 (1991-11-01), Yoshimura
patent: 5363259 (1994-11-01), Narita
patent: 5798900 (1998-08-01), Shimbo
Greenblum & Bernstein P.L.C.
Kupstas Tod
Levy Stuart S.
MEC Co. Ltd.
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