US4686593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overriding loading door for a magnetic recording/reproducing apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1985-02-28
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Granted: 1987-08-11
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Expires: 2005-02-28
Abstract
Abstract A magnetic recording/reproducing apparatus having an opening and closing door for loading and unloading a magnetic sheet pack, the door being adapted to override a position wherein the door is locked and then to return thereto, upon loading the magnetic sheet pack. The door has a pressure member which, during the overriding movement of the door, presses a center core of the magnetic sheet to forcibly mount the magnetic sheet onto a spindle. The pressure member is spaced from the center core when the door retreats to its locked position, in which the door cannot move in any direction. A switching member is provided so as to control a driving motor for the spindle in cooperation with the action of a mechanical device for locking the door.
Inventors
- 👤 Yoshiyuki Watanabe
- 👤 Yukio Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:53
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/044; G11B17/046; G11B17/022; G11B17/028; G11B17/0284; G11B19/00; G11B19/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A magnetic recording/reproducing apparatus having a door capable of opening and closing for loading and unloading a pack that contains a magnetic sheet with a center core, the door when closed having a locked position, means mounting said door for overriding movement beyond said locked position and for return movement thereafter back to said locked position, a pressure member inside said door for pressing said center core of said magnetic sheet on a driving spindle of said apparatus upon said overriding movement of said door; and mechanical means for locking said door in said locked position, said mechanical lock means being adapted to be actuated by said return movement of said door so as to lock said door in a position in which said pressure member is spaced from said center core.
Claim 2
Dependent Claim
132 words
A magnetic recording/reproducing apparatus having a door capable of opening and closing for loading and unloading a pack that contains a magnetic sheet with a center core, the door when closed having a locked position, means mounting said door for overriding movement beyond said locked position and for return movement thereafter back to said locked position, a pressure member inside said door for pressing said center core of said magnetic sheet on a driving spindle of said apparatus upon said overriding movement of said door; and mechanical means for locking said door in said locked position, said mechanical lock means being adapted to be actuated by said return movement of said door so as to lock said door in a position in which said pressure member is spaced from said center core.
Claim 3
Dependent Claim
29 words
A magnetic recording/reproducing apparatus as defined in claim 1, and switching means for controlling a spindle driving motor in cooperation with the locking action of said mechanical lock means.
Claim 4
Dependent Claim
40 words
A magnetic recording/reproducing apparatus as defined in claim 1, wherein said mechanical lock means comprises a first lock member for inhibiting the opening movement of said door and a second lock member for inhibiting the closing movement of said door.
Claim 5
Dependent Claim
40 words
A magnetic recording/reproducing apparatus as defined in claim 1, wherein said mechanical lock means further comprises a lock pin mounted on said door and a lock lever having a forked portion engageable with said lock pin to lock the door.
Claim 6
Dependent Claim
53 words
A magnetic recording/reproducing apparatus as definedin claim 4, further comprising control means which is adapted to be positioned so as to be close to said magnetic sheet when said door is locked in its locked position, and movable guide means for causing said door to move parallel to itself during said overriding movement.
Claim 7
Dependent Claim
85 words
A magnetic recording/reproducing apparatus as defined in claim 1, further comprising a pack holder slidably mounted in said door for receiving a magnetic sheet pack therein, and means for slidingly moving said pack holder in cooperation with opening and closing movement of said door, said means being adapted to move said pack holder upwardly partially protruding out of said door in cooperation with said opening movement of said door and downwardly being fully covered with said door before said overriding closing movement of said door.
References Cited (Backward Citations)
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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) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |