Patent US3517867A successfully refreshed from Google Patents.
Patent US4559575A successfully refreshed from Google Patents.
US4559575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable disk cartridge with improved door operating mechanism
Assignee: Dysan Corp
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Filing: 1982-11-22
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Granted: 1985-12-17
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Expires: 2002-11-22
Abstract
Abstract An improved door slide operating mechanism consisting of a door slide with an operated end having a clevis link, a crank having a lower long journal received in a bored boss formed in the bottom portion of a disk cartridge casing and a short upper journal received in a bored boss formed in an upper casing portion, and a spring wound in tension about the lower journal boss and having a free arm biased against an operating end of the crank. The mechanism is easily assembled by winding the spring about the boss, inserting a temporary holding pin into an additional boss formed in the bottom casing to provide a stop for the spring arm, engaging a forked end of a crank arm with the door slide clevis, inserting the long lower journal into its corresponding bore, and removing the temporary pin so that the free spring end bears against a stop provided on the crank arm.
Inventors
- 👤 Sal J. Noto
- 👤 Robert P. Wartenbergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/032; G11B23/0321
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
214 words
A door slide mechanism for a disk cartridge having a top and bottom casing portion with door slide grooves provided adjacent an access end, said mechanism comprising: a pair of bored bosses each formed on a different inner surface of said top and bottom casing portions in spaced faced relation; a door slide received in said slide grooves, said door slide having a free end and an operated end; a crank having a central body portion with coaxially arranged first and second journal means serving as pivot posts, the first journal means having a sufficiently longer axial length than the second journal means for providing a vertically stable support for said crank when received in the bored boss of the bottom casing portion during assembly, said crank having a first operating arm coupled to said operated end of said door slide and a second operating arm arranged at an angle with respect to said first operating arm and adapted to rotate said crank in a first angular direction when operated by an associated member; and a torsion spring received about said bored boss of said bottom casing portion and held in tension by a fixed reference provided by one of said top and bottom casing portions and a reference stop carried by said crank.
Claim 2
Dependent Claim
214 words
A door slide mechanism for a disk cartridge having a top and bottom casing portion with door slide grooves provided adjacent an access end, said mechanism comprising: a pair of bored bosses each formed on a different inner surface of said top and bottom casing portions in spaced faced relation; a door slide received in said slide grooves, said door slide having a free end and an operated end; a crank having a central body portion with coaxially arranged first and second journal means serving as pivot posts, the first journal means having a sufficiently longer axial length than the second journal means for providing a vertically stable support for said crank when received in the bored boss of the bottom casing portion during assembly, said crank having a first operating arm coupled to said operated end of said door slide and a second operating arm arranged at an angle with respect to said first operating arm and adapted to rotate said crank in a first angular direction when operated by an associated member; and a torsion spring received about said bored boss of said bottom casing portion and held in tension by a fixed reference provided by one of said top and bottom casing portions and a reference stop carried by said crank.
Claim 3
Dependent Claim
16 words
The combination of claim 1 wherein said reference stop is carried by said first operating arm.
Claim 4
Dependent Claim
32 words
The combination of claim 1 wherein said reference stop is located on said first operating arm between the pivot axis of said crank and the outer end of said first operating arm.
Claim 5
Dependent Claim
38 words
The combination of claim 1 further including an additional bored boss formed on the inner surface of said bottom casing portion adjacent said first bored boss for temporarily receiving a spring fixture pin during assembly of said mechanism.
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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |