Patent US4709282A successfully refreshed from Google Patents.
US4709282A
Expired / Lapsed
US
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Device for loading or unloading magnetic disc pack
Assignee: Fujifilm Holdings Corp
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Filing: 1986-04-08
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Granted: 1987-11-24
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Expires: 2006-04-08
Abstract
Abstract Device for loading or unloading a magnetic disc pack applicable to a magnetic recorder or reproducer in an electronic camera system wherein a subject is electronically still-photographed and recorded in a rotating magnet sheet, and the reproducing of and image is carried out by a television system or a printer. This device for loading or unloading a magnetic disc pack is provided therein with a blocking plate for preventing the double insertion, whereby, even when the magnetic disc pack may be inserted erroneously, the insertion can be blocked by the blocking plate, so that the magnetic head and like are not damaged.
Inventors
- 👤 Kazukiyo Tamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:16
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/043; G11B17/0434; G11B19/00; G11B19/02; G11B19/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
A device for loading or unloading a magnetic disc pack housing a magnetic disk into and out of a recorder/reproducer, said device comprising: a holder adapted to receive said magnetic disc pack, said holder being further adapted for translation so as to guide a center core of said magnetic disc to a position where said center core is coupled to a rotary drive shaft; a regulating plate; a regulating plate holder for guiding said regulating plate to a position opposed to a magnetic recording/reproducing head; a recorder/reproducer case, said case encasing said holder and said regulating plate holder and including an insertion opening through which said magnetic disc pack may be inserted into said holder; and a blocking plate formed on said regulating plate holder, said blocking plate closing said insertion opening during recording/reproducing.
Claim 2
Independent Claim
134 words
A device for loading or unloading a magnetic disc pack housing a magnetic disk into and out of a recorder/reproducer, said device comprising: a holder adapted to receive said magnetic disc pack, said holder being further adapted for translation so as to guide a center core of said magnetic disc to a position where said center core is coupled to a rotary drive shaft; a regulating plate; a regulating plate holder for guiding said regulating plate to a position opposed to a magnetic recording/reproducing head; a recorder/reproducer case, said case encasing said holder and said regulating plate holder and including an insertion opening through which said magnetic disc pack may be inserted into said holder; and a blocking plate formed on said regulating plate holder, said blocking plate closing said insertion opening during recording/reproducing.
Claim 3
Dependent Claim
19 words
The device of claim 1, wherein said blocking plate is formed by bending an end of said regulating plate.
Claim 4
Dependent Claim
45 words
The device of claim 2, wherein a slider is slidably mounted in said case, said slider having a first cam and a second cam formed thereon, said first cam guiding movement of said holder and said second cam guiding movement of said regulating plate holder.
Claim 5
Dependent Claim
51 words
The device of claim 3, wherein at least one side plate is provided in said case, each said side plate including a first regulating groove and a second regulating groove, said first regulating groove regulating movement of said holder and said second regulating groove regulating movement of said regulating plate holder.
Claim 6
Dependent Claim
15 words
The device of claim 4, wherein said second regulating groove has a circularly arcuate shape.
Claim 7
Dependent Claim
19 words
The device of claim 4, wherein said blocking plate pivots upon movement of said slider in an insertion direction.
Claim 8
Dependent Claim
45 words
The device of claim 6, wherein upon insertion of said magnetic disc into said holder and movement of said slider in said insertion direction, said magnetic disc pack is drawn toward said rotary drive shaft and said blocking plate pivots to close said insertion opening.
Claim 9
Dependent Claim
21 words
The device of claim 3, wherein a rack and pinion mechanism is provided for moving said slider in an insertion direction.
Claim 10
Dependent Claim
21 words
The device of claim 3, wherein said first cam is a groove cam and said second cam is a peripheral cam.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |