A disc cartridge including a shell, a disc within the shell, a disc restraint for selectively restraining the drive may be inserted to move the restraint is provided with a cover attached to the restraint for engaging the release pin, moving the restraint in response to movement of the release pin and closing the opening to prevent the entrance of contaminants into the shell.
申请公布号
US4875128(A)
申请公布日期
1989.10.17
申请号
US19880217440
申请日期
1988.07.11
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY;SONY CORPORATION
发明人
LEONARD, VURNEN;KATO, ARTHUR K.;OHMORI, KIYOSHI;FUJIWARA, KEISUKE;SODA, YUTAKA