Patent US5331499A successfully refreshed from Google Patents.
US5331499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installable write-protect button for floppy disk
Assignee: Individual
•
Filing: 1992-08-27
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Granted: 1994-07-19
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Expires: 2012-08-27
Abstract
Abstract A write-protect button is designed to be retrofitted into an intact floppy disk which has been constructed with a write-protect assembly but without the write-protect button. The present invention also includes a method of retrofitting the write-protect button into an intact floppy disk without dismantling the disk.
Inventors
- 👤 Carroll L. Marcusen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:12
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/28; G11B23/288; G11B23/02; G11B23/03; G11B23/0301; G11B23/0302; G11B23/0303
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A write-protect button for retrofit installation in a write/read pocket in the jacket of a computer floppy disk, the pocket including a "read only" portion and a "write/read" portion and a channel within the jacket for slidably receiving the write-protect button, the write-protect button comprising: a. a blocking tab of sufficient size to encompass the "read only" opening, the blocking tab having a first upper end, a second lower end and two sides wherein the blocking tab comprises a flexure area enabling the blocking tab to flex in axial alignment with the sides of the blocking tab such that the sides are urged toward each other under inward pressure of the sides of the blocking tab and return to its original position when the pressure is removed; and b. a pair of substantially parallel spaced apart opposed legs having first ends and second ends, wherein the first ends of each leg are attached to the sides of the blocking tab, the legs comprising means to slidably engage the write-protect button in the channel.
Claim 2
Dependent Claim
173 words
A write-protect button for retrofit installation in a write/read pocket in the jacket of a computer floppy disk, the pocket including a "read only" portion and a "write/read" portion and a channel within the jacket for slidably receiving the write-protect button, the write-protect button comprising: a. a blocking tab of sufficient size to encompass the "read only" opening, the blocking tab having a first upper end, a second lower end and two sides wherein the blocking tab comprises a flexure area enabling the blocking tab to flex in axial alignment with the sides of the blocking tab such that the sides are urged toward each other under inward pressure of the sides of the blocking tab and return to its original position when the pressure is removed; and b. a pair of substantially parallel spaced apart opposed legs having first ends and second ends, wherein the first ends of each leg are attached to the sides of the blocking tab, the legs comprising means to slidably engage the write-protect button in the channel.
Claim 3
Independent Claim
287 words
A method of installing a write-protect button a write/read pocket in the jacket of an intact computer floppy disk, the pocket including a "read only" portion and a "write/read" portion and a channel within the jacket for slidably receiving the write-protect button, which disk does not include a write-protect button, comprising: a. positioning the write-protect button near the write/read pocket, the write-protect button comprising: i. a blocking tab of sufficient size to encompass the "read only" opening, the blocking tab having a first upper end, a second lower end and two sides wherein the blocking tab comprises a flexure area enabling the blocking tab to flex in axial alignment with the sides of the blocking tab such that the sides are urged toward each other under inward pressure of the sides of the blocking tab and return to its original position when the pressure is removed; and ii. a pair of substantially parallel spaced apart opposed legs having first ends and second ends, wherein the first ends of each leg are attached to the sides of the blocking tab, the legs comprising means to slidably engage the write-protect button in the channel; b. flexing the blocking tab inwardly under inward pressure such that the second ends of the legs are drawn closer together to bend the blocking tab in axial alignment with the sides of the blocking tab urging the sides toward each other under inward pressure of the sides of the blocking tab; c. inserting the second ends of the into the channel of the write/read pocket; and d. urging the first ends of the into the opening of the write/read pocket, wherein the write-protect button slidably fits into the write/read pocket and is retained therein.
Claim 4
Independent Claim
287 words
A method of installing a write-protect button a write/read pocket in the jacket of an intact computer floppy disk, the pocket including a "read only" portion and a "write/read" portion and a channel within the jacket for slidably receiving the write-protect button, which disk does not include a write-protect button, comprising: a. positioning the write-protect button near the write/read pocket, the write-protect button comprising: i. a blocking tab of sufficient size to encompass the "read only" opening, the blocking tab having a first upper end, a second lower end and two sides wherein the blocking tab comprises a flexure area enabling the blocking tab to flex in axial alignment with the sides of the blocking tab such that the sides are urged toward each other under inward pressure of the sides of the blocking tab and return to its original position when the pressure is removed; and ii. a pair of substantially parallel spaced apart opposed legs having first ends and second ends, wherein the first ends of each leg are attached to the sides of the blocking tab, the legs comprising means to slidably engage the write-protect button in the channel; b. flexing the blocking tab inwardly under inward pressure such that the second ends of the legs are drawn closer together to bend the blocking tab in axial alignment with the sides of the blocking tab urging the sides toward each other under inward pressure of the sides of the blocking tab; c. inserting the second ends of the into the channel of the write/read pocket; and d. urging the first ends of the into the opening of the write/read pocket, wherein the write-protect button slidably fits into the write/read pocket and is retained therein.
References Cited (Backward Citations)
US4496999A
Cited
US4658317A
Cited
US4685017A
Cited
USRE33961E
Cited
US4649452A
Cited
US4618060A
Cited
US4796138A
Cited
US4771354A
Cited
US4757407A
Cited
US4811150A
Cited
US4969060A
Cited
US5150269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |