US3553439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfiche master having magnetic tracks
Assignee: Bellhow Jackets Inc
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Filing: 1967-10-04
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Granted: 1971-01-05
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Expires: 1987-10-04
Abstract
Abstract A microfiche master or other forms of a transparent multiplechannel jacket for storing and displaying data such as microfilm images, the jacket being constituted by two superposed panels of flexible clear-plastic sheeting which are joined together by spaced ribs defining chambers or channels wherein microfilm strips may be inserted, at least one rib having a hot-melt coating to effect bonding thereof to the panels, which coating has a finely divided magnetizable material dispersed therein whereby the rib provides a magnetic recording track adapted to receive identifying data to facilitate automatic filing and retrieval of the jacket.
Inventors
- 👤 Isidore Dorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:44
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A random-access filing system having a plurality of identical transparent microfilm jackets which are individually identifiable by magnetic scanning, each jacket comprising: a. two panels formed of flexible synthetic plastic transparent material in superposed relation, the top panel having a relatively low coefficient of friction and a thickness no greater than one mil to facilitate magnetic scanning of a track on the jacket by a magnetic head engaging said top panel, and b. a plurality of spacing ribs interposed between said panels and disposed along parallel lines, said ribs being bonded to said panels to define channels into which microfilm may be inserted, at least one of said ribs covered by said top panel incorporating magnetizable material whereby said rib constitutes a magnetic recording track onto which identifying data is recordable.
Claim 2
Dependent Claim
131 words
A random-access filing system having a plurality of identical transparent microfilm jackets which are individually identifiable by magnetic scanning, each jacket comprising: a. two panels formed of flexible synthetic plastic transparent material in superposed relation, the top panel having a relatively low coefficient of friction and a thickness no greater than one mil to facilitate magnetic scanning of a track on the jacket by a magnetic head engaging said top panel, and b. a plurality of spacing ribs interposed between said panels and disposed along parallel lines, said ribs being bonded to said panels to define channels into which microfilm may be inserted, at least one of said ribs covered by said top panel incorporating magnetizable material whereby said rib constitutes a magnetic recording track onto which identifying data is recordable.
Claim 3
Dependent Claim
36 words
A system as set forth in claim 1, wherein said one rib has a hot-melt coating on the upper face thereof to effect bonding to the top panel, which coating includes a dispersion of magnetizable powder.
Claim 4
Dependent Claim
18 words
A system as set forth in claim 1, wherein said one rib is formed of magnetic recording tape.
Claim 5
Dependent Claim
26 words
A system as set forth in claim 1, wherein said ribs have a thickness substantially equal to that of film to be inserted in said channels.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |