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US 4,071,869 AGranted
Assembling flexible disk record structures
AssigneeInternational Business Machines Corporation
InventorsLouis Bock Feierabend, David Staples Proper
Life of this patent
Estimating the term…
Abstract
Method and apparatus for assembling a flexible record disk member to a non-flexible center support ring and substantially simultaneously recording servo signals on the flexible disks concentrically with respect to the support ring whereby the recorded servo signals are precisely coaxial to the non-flexible ring support.
Claims11
Manufacturing apparatus, comprising:
- a frame;
- a circular platen on said frame and for supporting a flexible magnetic record member;
- first means on said frame and being coaxial to said platen for centering said flexible magnetic record member with respect to a first axis;
- second means on said frame and being coaxial to said first means and axially movable with respect thereto and for receiving a non-flexible circularly ring shaped member;
- a press on said frame and coaxial to said first axis and axially relatively movable therealong between open and closed positions with respect to said circular platen;
- actuating means for relatively moving said press against said second means and said platen for permanently adhering said ring member to said record member in a coaxial relationship;
- and
- recording means coaxially disposed to said first axis for recording predetermined circumferentially extending magnetic signals on said record member while stationarily disposed on said platen and after said members are secured to each other.
5 more elements
Manufacturing apparatus, comprising:
- an annular platen disposed coaxially about a first axis;
- a first frustoconical cylindrical support coaxial to said first axis and being axially movably disposed with respect to the annular platen and having a first effective diameter in said conical portion for precisely coaxially supporting a disk support ring;
- a second frustoconical cylindrical support coaxially disposed about said first support and being coaxial to said first axis and independently axially movable along said first axis and having a second effective diameter in its conical portion for coaxially supporting a flexible annular magnetic disk with respect to said support ring;
- means axially moving said ring and disk to said platen for permanently attaching same to each other;
- and
- magnetic recording means coaxial to said first axis and having a portion operative to record signals on said disk while disposed on said annular platen precisely coaxial to said first axis.
3 more elements
The method of precisely manufacturing a flexible record disk member structure for enabling later precise assembly as a disk stack apparatus, the steps of:
- centering a support ring on a truncated conical support coaxial to a first axis and having a first effective radius;
- centering a flexible record disk member on a precisely coaxial truncated conical support coaxial to said first axis having an effective radius greater than the first radius;
- securing the ring and disk member while coaxially oriented by the supports;
- and
- while maintaining the secured ring and record disk member coaxial to the first axis, recording servo data signal on the record disk member coaxially to said first axis by apparatus having a precise coaxial relationship to the first axis.
2 more elements
Dependencies are inferred from the claim text.