Magnetic tape recording cassette with sliding cover - coupled by leaf spring element to spools to control access and operation

摘要

A magnetic tape recording cassette has a main housing (20) with a pair of flangeless spools. The front of the housing has apertures for access by tape drive elements and heads. Access is controlled by a sliding cover that can be moved between two positions (B,C) to control access. The position of the cover is determined by a U-shaped leaf spring with arms (11b,11c) having ends engaging the spools and controlling operation. ADVANTAGE - Simplified assembly of locking element. Low friction element.