Tape cassette with reduced shrinkage mark

Details Tape cassette with reduced shrinkage mark Tape cassette with reduced shrinkage mark

Filed on

1993-06-03

Date issued

1995-07-18

Examiner

Heinz, A. J.

Patent Class

Dynamic magnetic information storage or retrieval

SubClass

Record medium

SubSubClass

In container

Other Related Categories

G11B 2302

Type

Patent

Status

active

Patent number

054347360

Description

ABSTRACT:
Shrinkage mark due to difference in thickness between a thick bottom portion and a thin bottom wall portion of a cassette is reduced by forming a recess in the thick wall portion and life of molding dies is elongated by forming an end wall of the recess having a top surface in common with the parting line of the thick bottom wall portion.

REFERENCES:
patent: 5189583 (1993-02-01), Okamura

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