The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1993
Filed:
Mar. 29, 1991
Akihiro Nishimura, Higashi-Osaka, JP;
Toru Ichimura, Neyagawa, JP;
Shuji Uematsu, Toyono, JP;
Yoshinori Shiomi, Tsuyama, JP;
Kenji Iwano, Tsuyama, JP;
Matsushita Electric Industrial Co., Ltd., Kadono, JP;
Abstract
A set of tape cassettes of successively larger sizes, each cassette having a housing elongated in a longitudinal direction and having a front face with a tape accommodating opening symmetrical about a center line extending in a lateral direction transverse to the longitudinal direction and midway between side faces of the housing, the housing further having a bottom face with a plurality of cassette guide grooves therein parallel to each other and extending transversely of the housing and engagable with guide projections on a cassette holder for guiding the cassette into the cassette holder. The opening and the cassette guide grooves in each cassette are in the same position relative to the center line of the cassette housing, and a distance in the longitudinal direction between neighboring cassette guide grooves and a distance in the longitudinal direction between the cassette guide grooves closest to the side faces and the side faces in the housing of each of the tape cassettes of the set other than the smallest cassette of the set are smaller than a width of the smallest of the cassettes in the set in the lateral direction. Thus, erroneous insertion of the cassettes into the cassette holder in the longitudinal direction of the cassettes is prevented.