Patent US3975768A successfully refreshed from Google Patents.
US3975768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable cartridge flexible disc memory apparatus
Assignee: GENISCO Tech CORP
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Filing: 1973-06-20
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Granted: 1976-08-17
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Expires: 1993-06-20
Abstract
Abstract Flexible disc memory apparatus has a drive for rotating the flexible disc in a cartridge which is opened when inserted into the apparatus by a wedge shaped member inserted into the cartridge. The drive includes a magnetic coupling and centering device for the hub of the flexible disc. A movable head plate carries transducer heads which are positioned at selected track locations by the head. The apparatus also includes a second flexible disc and head plate integrally incorporated in the apparatus.
Inventors
- 👤 James O. Jacques
- 👤 Barry C. Kockler
- 👤 Frank M. Weller, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/035; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; G11B23/02; G11B23/03; G11B23/033; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
176 words
In flexible magnetic disc memory apparatus adapted to receive a flexible disc cartridge having a bottom, a top hinged at the rear of the bottom and a flexible magnetic disc with a hub disposed in an opening in the bottom of the cartridge, said apparatus comprising: a housing having an opening to receive said cartridge, a drive shaft extending into said housing, means for rotating said shaft, coupling means rotatable by said shaft and engageable with the hub of said disc upon insertion of said cartridge into said housing to rotate said disc, a transducer head plate in said housing, and means for opening said cartridge upon insertion of said cartridge into said housing to allow the top and bottom of said cartridge to span said head plate, said opening means including wedge means on opposite side walls of said housing and guide means on said side walls for moving the top of said cartridge away from the bottom of said cartridge, whereby said head plate is disposed between said top and bottom of said cartridge.
Claim 2
Dependent Claim
176 words
In flexible magnetic disc memory apparatus adapted to receive a flexible disc cartridge having a bottom, a top hinged at the rear of the bottom and a flexible magnetic disc with a hub disposed in an opening in the bottom of the cartridge, said apparatus comprising: a housing having an opening to receive said cartridge, a drive shaft extending into said housing, means for rotating said shaft, coupling means rotatable by said shaft and engageable with the hub of said disc upon insertion of said cartridge into said housing to rotate said disc, a transducer head plate in said housing, and means for opening said cartridge upon insertion of said cartridge into said housing to allow the top and bottom of said cartridge to span said head plate, said opening means including wedge means on opposite side walls of said housing and guide means on said side walls for moving the top of said cartridge away from the bottom of said cartridge, whereby said head plate is disposed between said top and bottom of said cartridge.
Claim 3
Dependent Claim
35 words
In flexible magnetic disc memory apparatus as defined in claim 1, including another transducer head plate carried by said housing, and another flexible magnetic disc carried by said shaft adjacent to said another head plate.
Claim 4
Dependent Claim
23 words
In flexible magnetic disc memory apparatus as defined in claim 1, said coupling means including a magnetic drive ring rotated by said shaft.
Claim 5
Dependent Claim
74 words
In flexible magnetic disc memory apparatus as defined in claim 1, said coupling means including a magnetic drive ring rotated by said shaft, throwout means mounting said drive ring for movement longitudinally of said shaft between a drive position and a non-drive position, and means for actuating said throwout means upon insertion of said cartridge into said housing to initially move said drive ring to said non-drive position and then to said drive position.
Claim 6
Dependent Claim
112 words
In flexible magnetic disc memory apparatus as defined in claim 1, said coupling means including a magnetic drive ring rotated by said shaft, throwout means mounting said drive ring for movement longitudinally of said shaft between a drive position and a non-drive position, and means for actuating said throwout means upon insertion of said cartridge into said housing to initially move said drive ring to said non-drive position and then to said drive position, said means for actuating said throwout means including a throwout lever disposed in the path of the cartridge as said cartridge is inserted into said housing and a spring normally biasing said drive ring to said drive position.
Claim 7
Dependent Claim
144 words
In flexible magnetic disc memory apparatus as defined in claim 1, said coupling means including a magnetic drive ring rotated by said shaft, throwout means mounting said drive ring for movement longitudinally of said shaft between a drive position and a non-drive position, and means for actuating said throwout means upon insertion of said cartridge into said housing to initially move said drive ring to said non-drive position and then to said drive position, said means for actuating said throwout means including a throwout lever disposed in the path of the cartridge as said cartridge is inserted into said housing and a spring normally biasing said drive ring to said drive position, said lever having means engageable with said cartridge when said cartridge is in said drive position to hold said cartridge in said housing until said drive ring is in said non-drive position.
Claim 8
Dependent Claim
24 words
In flexible magnetic disc memory apparatus as defined in claim 1, means for reclosing said cartridge when said cartridge is removed from said housing.
Claim 9
Dependent Claim
27 words
In flexible magnetic disc memory apparatus as defined in claim 1, said means for opening said cartridge including wedge means on opposite side walls of said housing.
Claim 10
Dependent Claim
57 words
In flexible magnetic disc memory apparatus as defined in claim 1, means mounting said head plate for radial adjustment relative to the disc of said cartridge, and means for actuating said head plate to adjusted positions including a cam, a cam shaft extending from said housing, and operating means for said cam shaft externally of said housing.
Claim 11
Dependent Claim
43 words
In flexible magnetic disc memory apparatus as defined in claim 1, said means for opening said cartridge including wedge means on opposite side walls of said housing, and also including means for closing said cartridge when said cartridge is removed from said housing.
Claim 12
Dependent Claim
26 words
In flexible magnetic disc memory apparatus as defined in claim 1, means mounting said head plate for radial adjustment relative to the disc of said cartridge.
Claim 13
Dependent Claim
43 words
In flexible magnetic disc memory apparatus as defined in claim 1, means mounting said head plate for radial adjustment relative to the disc of said cartridge including a pivot for said head plate and means slidably supporting said head plate in said housing.
Claim 14
Dependent Claim
36 words
In flexible magnetic disc memory apparatus as defined in claim 1, means mounting said head plate for radial adjustment relative to the disc of said cartridge, and means for actuating said head plate to adjusted positions.
Claim 15
Dependent Claim
153 words
In flexible magnetic disc memory apparatus; a cartridge and a cartridge receiving unit, said cartridge including top and bottom walls hinged across a rear wall, a flexible magnetic disc in said cartridge having a hub, the bottom of said cartridge having an opening for said hub; said cartridge receiving unit comprising: a housing having an opening to receive said cartridge, a drive shaft extending into said housing, means for rotating said shaft, coupling means rotatable by said shaft and engageable with the hub of said disc upon insertion of said cartridge into said housing to allow the top and bottom of said cartridge to span said head plate and wedge means on opposite side walls of said housing and guide means on said side walls for moving the top of said cartridge away from the bottom of said cartridge, whereby said head plate is disposed between said top and bottom of said cartridge.
Claim 16
Dependent Claim
153 words
In flexible magnetic disc memory apparatus; a cartridge and a cartridge receiving unit, said cartridge including top and bottom walls hinged across a rear wall, a flexible magnetic disc in said cartridge having a hub, the bottom of said cartridge having an opening for said hub; said cartridge receiving unit comprising: a housing having an opening to receive said cartridge, a drive shaft extending into said housing, means for rotating said shaft, coupling means rotatable by said shaft and engageable with the hub of said disc upon insertion of said cartridge into said housing to allow the top and bottom of said cartridge to span said head plate and wedge means on opposite side walls of said housing and guide means on said side walls for moving the top of said cartridge away from the bottom of said cartridge, whereby said head plate is disposed between said top and bottom of said cartridge.
Claim 17
Dependent Claim
38 words
In flexible magnetic disc memory apparatus as defined in claim 14, additional memory means including another transducer head plate carried by said housing, and another flexible magnetic disc carried by said shaft adjacent to said another head plate.
Claim 18
Dependent Claim
30 words
In flexible magnetic disc memory apparatus as defined in claim 14, said coupling means including a magnetic drive ring rotated by said shaft and a magnetic ring on said hub.
Claim 19
Dependent Claim
28 words
In flexible magnetic disc memory apparatus as defined in claim 14, said coupling means and said hub having means for centering said hub with respect to said shaft.
Claim 20
Dependent Claim
24 words
In flexible magnetic disc memory apparatus as defined in claim 14, means for reclosing said cartridge when said cartridge is removed from said housing.
Claim 21
Dependent Claim
39 words
In flexible magnetic disc memory apparatus as defined in claim 14, means for reclosing said cartridge when said cartridge is removed from said housing, said cartridge having latch means for holding the cartridge closed upon removal from said unit.
Claim 22
Dependent Claim
54 words
In flexible magnetic disc memory apparatus as defined in claim 14, means for reclosing said cartridge when said cartridge is removed from said housing, said cartridge having latch means for holding the cartridge closed upon removal from said unit, and means forming a seal about the sides of said cartridge when it is closed.
Claim 23
Dependent Claim
67 words
In flexible magnetic disc memory apparatus as defined in claim 14, means for reclosing said cartridge when said cartridge is removed from said housing, said cartridge having latch means for holding the cartridge closed upon removal from said unit, and means forming a seal about the sides of said cartridge when it is closed, said hub having sealing means engageable with the cartridge about said hub opening.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |