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:
Jun. 28, 1994
Filed:
Apr. 15, 1991
Wilhelmus J Rath, Eindhoven, NL;
Cornelis Ouwerkerk, Eindhoven, NL;
Cornelis M van Beijersbergen, Eindhoven, NL;
Pieter G Markus, Hoogvliet, NL;
Paul J Van Weele, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A system for recording and/or reading signals on/from information carriers (4) accommodated in cassettes (2) composed of cassettes (2-3A) of a first type and cassettes (2-3B) of a second type, which two types of cassettes have substantially identical dimensions and shapes apart from local identifying distinctive features (22-3A, 26-3A; 22-3B, 26-3B) of a first type and of a second type respectively. Drive apparatus constructed to cooperate with a cassette of the system when inserted in a correct orientation. Drive apparatus of the first type, is constructed for cooperation with cassettes (2-3A) of the first type but not for cooperation with cassettes (2-3B) of the second type, and drive apparatus of a second type, is constructed for cooperation with cassettes (2 3B) of the second type but not for cooperation with cassettes (2 3A) of the first type. The drive apparatus further comprise a physical blocking mechanism (30; 52) of a first type and a second type respectively, which are constructed to cooperate with the distinctive features of the different cassette types wherein the drive apparatus of the first type accept cassettes of a first type but do not accept cassettes of the second type and the drive apparatus of the second type accept cassettes of the second type but do not accept cassettes of the first type, at least when that the cassettes are inserted in a correct orientation and in other cases block the cassettes.