Patent US4274577A successfully refreshed from Google Patents.
US4274577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion filing container
Assignee: Individual
•
Filing: 1979-05-16
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Granted: 1981-06-23
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Expires: 1999-05-16
Abstract
Abstract An expandable filing container which has a front panel, a back panel and an expandable connecting panel connecting the front and back panels. Hinged panels or flaps are positioned inside at each end of the container near the connecting panel. When the connecting panel is expanded to accommodate material in the container, the flaps are folded toward the connecting panel and are positioned between the front and back panels. A plurality of different degrees of expansion of the connecting panel, and flaps may be positioned at various locations inside the container to divide the container into compartments.
Inventors
- 👤 Charles B. Walsh, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
B; B42; B42F; B42F7/00; B42F7/06; B42F7/08; Y; Y10; Y10S; Y10S229/00; Y10S229/928
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
An expandable container comprising: (a) a back panel; (b) a front panel; (c) connecting means between said back and front panels for connecting said back and front panels, said connecting means being expandable and collapsible to vary the distance between said front and back panels; and (d) flap means comprising a plurality of pairs of foldable flap members of various widths hingedly connected to at least one of said front and back panels for spanning the distance between said front and back panels and adapted to open in sequence as said distance increases from fully closed to fully opened.
Claim 2
Dependent Claim
99 words
An expandable container comprising: (a) a back panel; (b) a front panel; (c) connecting means between said back and front panels for connecting said back and front panels, said connecting means being expandable and collapsible to vary the distance between said front and back panels; and (d) flap means comprising a plurality of pairs of foldable flap members of various widths hingedly connected to at least one of said front and back panels for spanning the distance between said front and back panels and adapted to open in sequence as said distance increases from fully closed to fully opened.
Claim 3
Dependent Claim
114 words
An expandable container comprising: (a) a back panel; (b) a front panel opposite said back panel; (c) connecting means between said front and back panels for connecting said back and front panels, said connecting means being expandable and collapsable to vary the distance between said front and back panels; and (d) a plurality of pairs of flaps of varying sizes hingedly connected to at least one of said front and back panels, said flaps being arranged in increasing width and adapted to open in sequence so that as more material is inserted into the file, the next wider flap starting from the narrowest of said flaps can be hinged towards the expanded connecting panel.
Claim 4
Dependent Claim
114 words
An expandable container comprising: (a) a back panel; (b) a front panel opposite said back panel; (c) connecting means between said front and back panels for connecting said back and front panels, said connecting means being expandable and collapsable to vary the distance between said front and back panels; and (d) a plurality of pairs of flaps of varying sizes hingedly connected to at least one of said front and back panels, said flaps being arranged in increasing width and adapted to open in sequence so that as more material is inserted into the file, the next wider flap starting from the narrowest of said flaps can be hinged towards the expanded connecting panel.
References Cited (Backward Citations)
US975792A
Cited
US1373222A
Cited
US1622753A
Cited
DK42307C
Cited
US1956325A
Cited
US2333798A
Cited
US3003680A
Cited
US3148821A
Cited
US3648923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |