US3779393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
File for documents and the like
Assignee: Individual
•
Filing: 1971-08-11
•
Granted: 1973-12-18
•
Expires: 1991-08-11
Abstract
Abstract A file for documents and the like comprises a double envelope, obtained by folding a rectangular sheet of a thin but relatively rigid material such as cardboard along a folding line parallel to its short sides and located near the middle of the long sides and then folding the composite sheet along at least one additional folding line to provide a bottom. The free ends of the superimposed sheet parts are connected to a first suspension bar while a second suspension bar is introduced between the two sheets parts and adapted to bear against the first-mentioned fold thereof.
Inventors
- 👤 C Grundell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:41
CPC Classifications
B; B42; B42F; B42F21/00; B42F21/06; B42F21/065; B42F15/00; B42F15/0011; B42F15/0017; B42F15/0023; B42F15/0035
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A file for documents and the like and comprising a folded member of a thin relatively stiff sheet material and having the shape of an outer and inner envelope provided by a single rectangular sheet with a fold line extending parallel to the short sides of said sheet and located near the middle of the long sides of said sheet to provide two superimposed sheet parts with free ends, a bar having the free ends of said sheet secured thereto, a second bar extending between said two sheet parts and adapted to bear against the fold between said two sheets, at least one of said sheet parts being provided with at least one slot through which a part of said second rail penetrates thereby preventing a displacement of said bar in a direction away from said fold.
Claim 2
Dependent Claim
137 words
A file for documents and the like and comprising a folded member of a thin relatively stiff sheet material and having the shape of an outer and inner envelope provided by a single rectangular sheet with a fold line extending parallel to the short sides of said sheet and located near the middle of the long sides of said sheet to provide two superimposed sheet parts with free ends, a bar having the free ends of said sheet secured thereto, a second bar extending between said two sheet parts and adapted to bear against the fold between said two sheets, at least one of said sheet parts being provided with at least one slot through which a part of said second rail penetrates thereby preventing a displacement of said bar in a direction away from said fold.
Claim 3
Dependent Claim
93 words
A file as claimed in claim 1 wherein said first bar extending between said two sheet parts has at least one downwardly projecting lug, the slot of said folded member being parallel to said fold line and having a length corresponding to said lug and being located at a distance from said fold line which corresponds to the height of said first bar such that said lug of the latter while the upper portion thereof is in contact with said fold, penetrates through said slot thereby locking said bar to said folded member.
Claim 4
Dependent Claim
62 words
A file as claimed in claim 1 wherein said folded member is provided with a plurality of mutually parallel fold lines for constituting a spine of desired width, a strip of a relatively rigid material and having the desired spine width being introduced between said sheet parts, said strip having the same width as the distance between two of such fold lines.
Claim 5
Dependent Claim
44 words
A file as claimed in claim 1 wherein an end closing unit comprising a box-shaped member having one end open has its sides inserted in the space between the sides of said two envelopes and its bottom inserted between the spines of said envelopes.
Claim 6
Dependent Claim
49 words
A file as claimed in claim 4 wherein the bottom of said end closing unit is extended to provide a portion which extends outside the spines of said envelopes, said portion being folded over an underlying transverse of the outer envelope to lock the closure unit in said envelopes.
Claim 7
Dependent Claim
55 words
A file as claimed in claim 1, wherein said first bar which bears against said fold is threaded through spaced apart slots adapted in one envelope and extends perpendicular to said fold such that one part of said first bar will be situated intermediate the sheet parts while another part is situated outside the same.
References Cited (Backward Citations)
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US1457135A
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US1738120A
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US2174201A
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US2357070A
Cited
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Cited
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Cited
GB1010133A
Cited
US3298374A
Cited
DE1925459A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |