Magnetic disc cartridge

Details Magnetic disc cartridge Magnetic disc cartridge

G - Physics

11

B

352/31.11

G11B 23/033 (2006.01) G11B 27/34 (2006.01)

Patent

CA 1221456

ABSTRACT A magnetic sheet or disc cartridge comprising a magnetic sheet jacket; a magnetic flexible disc or sheet rotatably accommodated in the jacket; a window cut in the jacket and permitting the insertion of a magnetic head; a counter display member rotatably mounted in the jacket, co-axially surrounded on the upper side of the jacket, by a graduated display scale and having a keyhole-like aperture forming a radially oriented pointer; an elastically and permanently acting click and pawl arrangement and has a first series of teeth formed on a flange-like portion of the counter display member and a click fixed to the jacket and elastically engaging the teeth of the first series of teeth; and also comprises a blocking device which keeps the counter display member in a firmly locked position as soon as it is mechanically disconnected from the magnetic head.

457943

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