Abstract A removable hard disc memory cartridge (10), for use with a drive mechanism including a spindel (20) located within a drive housing. The drive housing interior is provided with stationary position registration members (23, 23') which cooperates with mating side edge portions of the cartridge (33A, 33B, 33C, 34, 35, 36) to provide positive positioning when the cartridge is inserted into the drive housing. A disc lock (46, 52) carried by the cartridge maintains the internally mounted cartridge disk (14) in a secured locked position when the cartridge is not in use, the lock mechanism cooperating with release posts (21, 22) carried by the drive housing to free the disc (14) for rotation just prior to engagement by the drive spindle (20). The disc has a self centering hub including a spindle referencing member having an aperture for receiving the free end of the spindle, the referencing member including angularly spaced arcuate segments (71, 72) closely matched to the radius of curvature of the drive spindle and providing a lateral abutment for the outer surface of the spindle, the referencing member further including a spindle biasing spring (75) laterally spaced from the arcuate segments (71, 72) and engageable with the outer surface of the spindle (20) for urging the spindle into surface contact with the arcuate segments. The housing includes an end wall with an air exit port (82) laterally displaced from the transducer access port (81) which provides a circumferentially oriented flow exit path for air entering the volume enclosed by the cartridge via the access port when the disc (14) is rotated.
A disk memory cartridge, said cartridge being characterised by: a housing providing an enclosed volume; a disk (14) mounted for rotation in said housing; hub means (44,62,44) coupled to said disk for enabling said disk to be rotated by an external spindle, said housing having an end wall with a transducer access port (81) located centrally therein, and an air exit port (82) laterally displaced from said access port and providing a circumferentially oriented flow exit path for air entering said enclosed volume via said access port when said disk is rotated.
Claim 2
Dependent Claim
92 words
A disk memory cartridge, said cartridge being characterised by: a housing providing an enclosed volume; a disk (14) mounted for rotation in said housing; hub means (44,62,44) coupled to said disk for enabling said disk to be rotated by an external spindle, said housing having an end wall with a transducer access port (81) located centrally therein, and an air exit port (82) laterally displaced from said access port and providing a circumferentially oriented flow exit path for air entering said enclosed volume via said access port when said disk is rotated.
Claim 3
Dependent Claim
21 words
The cartridge of claim 1 characterised in that said air exit port (82) is dimensioned to provide maximum exiting air flow.
Claim 4
Dependent Claim
18 words
The combination of either of claims 1 or 2, wherein said housing is fabricated from an antistatic material.
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