Memory-disc cartridge with loading mechanism

Claim 2

A data storage system comprising: a probe; a magnetic memory disc; a housing for said disc having a surface facing inwardly thereof, said housing being provided with a first opening; a shutter for said first opening slidably disposed adjacent said surface; a resilient strip attached to said shutter having an end slidable along said surface and biased against said surface for guidance thereby; said housing being provided with a second opening in alignment with said end of said resilient strip for receiving said probe; said probe engaging said end of said strip and moving said shutter when received in said second opening; a power drive spindle for engaging, supporting, and driving said disc, said spindle being insertable through said first opening for supporting driving engagement with said disc; said housing fitting about said disc sufficiently loose wherein said spindle supports and rotates said disc in said housing free of all contact therewith when said spindle is inserted through said first opening.

Claim 3

The combination of claim 1 wherein said housing has a two-part double wall which provides said first opening, and wherein said shutter is slidably disposed between said two parts of said double wall.

Claim 4

The combination of claim 1 wherein said disc includes a ferromagnetic portion and wherein said spindle includes a magnet, said ferromagnetic portiOn being attracted and held by said magnet on said spindle.

Claim 5

In a magnetic disc, data storage system utilizing storage cartridges each comprising a disc housing and a magnetic memory disc contained within said housing the combination comprising: rotative power means for rotating said disc; first means for slidably releasably receiving said housing; second means for moving said first means between a first position and a second position, said first position enabling slidable releasable reception of said housing, said second position engaging said disc with said rotative power means; third means for normally maintaining said first means in said first position, said third means being responsive to the reception of said housing fully into said first means for permitting said second means to move said first means to said second position; fourth means responsive to the placement of said first means in said second position for maintaining said first means in said second position, said fourth means including means for conditioning the application of energizing power to said rotative power means in response to the placement of said first means in said second position; fifth means for selectively applying energizing power to said motive power source subsequent to response by said fourth means, said fifth means including sixth means for causing said third means to maintain said first means in said second position; and seventh means for selectively removing energizing power from said motive power source, said seventh means including means for effecting the normal function of said third means.

Claim 6

In a magnetic disc, data storage system utilizing storage cartridges each comprising a disc housing and a magnetic memory disc contained within said housing the combination comprising: rotative power means for rotating said disc; first means for slidably releasably receiving said housing; second means for moving said first means between a first position and a second position, said first position enabling slidable releasable reception of said housing, said second position engaging said disc with said rotative power means; third means for normally maintaining said first means in said first position, said third means being responsive to the reception of said housing fully into said first means for permitting said second means to move said first means to said second position; fourth means responsive to the placement of said first means in said second position for maintaining said first means in said second position, said fourth means including means for conditioning the application of energizing power to said rotative power means in response to the placement of said first means in said second position; fifth means for selectively applying energizing power to said motive power source subsequent to response by said fourth means, said fifth means including sixth means for causing said third means to maintain said first means in said second position; and seventh means for selectively removing energizing power from said motive power source, said seventh means including means for effecting the normal function of said third means.