US3797033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for a read-write apparatus of magnetic disks
Assignee: Bull SAS
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Filing: 1972-07-14
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Granted: 1974-03-12
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Expires: 1992-07-14
Abstract
Abstract A safety device for a read and write apparatus with at least one removable magnetic disk enclosed in a cartridge with openings for retractable elements moving from the operating position in the cartridge to the rest position outside the cartridge; the above mentioned cartridge is held in place on the apparatus by means of removable attachments located on its outer surface. The device is provided with means for controlling the movement of the above mentioned elements and co-operating with the above mentioned attachments to prevent the possibility of removing the cartridge from the apparatus while said elements are even partially located in the cartridge.
Inventors
- 👤 Lucien R Prieur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:53
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B23/00; G11B23/02; G11B23/03; G11B23/032; G11B23/0323; G11B23/50; G11B23/505
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
A safety device for a read-write apparatus, said read-write apparatus comprising a cartridge enclosing at least one magnetic disk, said cartridge having at least one access opening therein, at least one element cooperable with said magnetic disk within said cartridge, mounting means mounting said element for movement between an operating position passing through said access opening and within said cartridge and of rest position outside of the cartridge, pivotably mounted holding bracket means located about the outer surface of the cartridge for holding the cartridge in an operative position on the apparatus; and said safety device including latching means for interacting with said holding bracket means for preventing removal of the cartridge from said apparatus while said element is located at least partly within the interior of said cartridge, and means cooperatively interconnecting said latching means and said element for related movements.
Claim 2
Dependent Claim
142 words
A safety device for a read-write apparatus, said read-write apparatus comprising a cartridge enclosing at least one magnetic disk, said cartridge having at least one access opening therein, at least one element cooperable with said magnetic disk within said cartridge, mounting means mounting said element for movement between an operating position passing through said access opening and within said cartridge and of rest position outside of the cartridge, pivotably mounted holding bracket means located about the outer surface of the cartridge for holding the cartridge in an operative position on the apparatus; and said safety device including latching means for interacting with said holding bracket means for preventing removal of the cartridge from said apparatus while said element is located at least partly within the interior of said cartridge, and means cooperatively interconnecting said latching means and said element for related movements.
Claim 3
Dependent Claim
45 words
A device according to claim 1, characterized in that said latching means lock said holding bracket means in their position for which purpose they hold the cartridge in place on the apparatus as long as said elements are positioned at least partly inside the cartridge.
Claim 4
Dependent Claim
43 words
A device according to claim 1, characterized in that said connection between said element and said latching acts to cause said element to leave the cartridge when said holding bracket means are moved to positions permitting removal of the cartridge from the apparatus.
Claim 5
Dependent Claim
30 words
A device according to claim 1 characterized by there being a plurality of said retractable elements and each retractable element controlling said latch means by its own means of control.
Claim 6
Dependent Claim
27 words
A device according to claim 1, characterized by there being a plurality of said retractable elements and each element being operatively associated with a holding bracket means.
Claim 7
Dependent Claim
71 words
A device according to claim 5 for an apparatus in which said movable elements include read-write heads for the disk and a cleaning brush for the disk, the cartridge is held in place by two holding bracket means in diametric opposed positions, and said latching means of one of the holding bracket means is associated with said heads while the other of said holding bracket means is connected with said brush.
Claim 8
Dependent Claim
24 words
A device accoRding to claim 1, characterized in that the mechanical connection between said element and said holding bracket means includes an enclosed cable.
Claim 9
Dependent Claim
66 words
A device according to claim 7, characterized in that the cable has one end integral with a bolt locking in operating position at least one holding bracket means when said element is in operating position, while the cable other end is solidly attached to a lever activated by said element for unlocking said holding bracket means when the element retracts to its position outside the cartridge.
Claim 10
Dependent Claim
93 words
A device according to claim 7, characterized in that the cable has two ends integral with pins capable of cooperating with a cam carried by said holding bracket means and a cam carried by said element respectively, and means connecting said pins in such a way that when the element is in operating position said bracket means is locked in its cartridge holding position and when the element retracts to its position outside the cartridge said bracket means are opened and said bracket means opening locking said element in the rest position thereof.
Claim 11
Dependent Claim
55 words
A device according to claim 7, characterized in that the cable has one end directly connected with said holding bracket means, said cable other end is connected with a lever for setting said lever in motion in response to opening of said bracket means and controlling the return to the rest position of said element.
Claim 12
Dependent Claim
31 words
A device according to claim 10, characterized by means coupling said lever to said element with lever acting directly on said element to push said element back into the rest position.
Claim 13
Dependent Claim
78 words
A device according to claim 10, characterized in that there are driving means connected to said element for driving said element to its operating position, elastic means acting on said element countering the action of driving means and forcing said element toward the rest position, and unlocking means for effecting the release of said element from said driving means and the action of said elastic means, said lever being coupled to said unlocking means for effecting actuation thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |