# US 4,394,995 A · Reel-turntable torque adjusting means

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- Number: US 4,394,995 A
- Document ID: US4394995A
- Status: Granted
- Kind: A
- Application number: 06/246,702
- Filed: 1981-03-23
- Granted: 1983-07-26
- Earliest claimed: 1980-03-21
- Assignees: Clarion Co., Ltd.
- Inventors: Hideki Hayashi; Kazuki Takai
- Web page: https://patentgrep.com/patent/US4394995A

## CPC

- G11B 15/50: by mechanical linkage, e.g. clutch
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A reel-turntable torque adjusting means comprising a series of steps (3) having different heights formed on an upper peripheral portion of a reel-turntable pulley (1) coupled to a reel turntable (4) for conveying a rotational force thereto and a spring (2) having fingers pressed at respective tip ends (20) thereof against the steps (3) whereby the pulley is pressed against a friction plate (5) driven by a motor, which is characterized in that each finger of the spring has slanting portions (21) at its tip end portion.

## Claims

### Claim 1

A reel-turntable torque adjusting means which comprises:
a reel-turntable member for conveying a rotational force to a reel turntable;
said reel-turntable member being formed with a plurality of steps having different heights at an upper peripheral portion thereof;
a spring member having one or more tip ends pressed against the steps, respectively;
said spring member having slanting portions on opposite sides of each of said tip ends; and
a motor-driven friction plate against which said reel-turntable member is pressed by said spring member.

### Claim 2 (depends on 1)

A reel-turntable torque adjusting means according to claim 1, wherein each of said steps has a shoulder formed in a slope and a stop defined by slanting sidewalls.