Patent US5018764A successfully refreshed from Google Patents.
US5018764A
Expired / Lapsed
US
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Foldable book and building structure
Assignee: Individual
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Filing: 1990-01-31
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Granted: 1991-05-28
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Expires: 2010-01-31
Abstract
Abstract A foldable structure for forming imaginative two and three dimensional structures, and for forming a book which has the novel capacity to open from four different directions, each direction revealing a different sequence of pages. The foldable structure is made of a flat planar element which is formed by a plurality of square leaves, flexibly hinged together, creating, when fully unfolded, a pattern resembling a square waveform that has three square leaves per side.
Inventors
- 👤 Paula Beardell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:27
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/38; B; B42; B42D; B42D1/00; B42D15/00; B42D15/0073; B42D15/008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
A foldable structure for forming a book like arrangement comprising: a flat planar element in the form of a square wave about a horizontal axis, said planar element having a plurality of vertical segments and a plurality of horizontal segments, said planar element having a predetermined vertical dimension, each of said vertical segments extending across said vertical dimension, each of said segments having N square panel portions, adjacent panel portions being separated by a fold line, accordion folding of successive panel portions providing a square book like structure.
Claim 2
Dependent Claim
88 words
A foldable structure for forming a book like arrangement comprising: a flat planar element in the form of a square wave about a horizontal axis, said planar element having a plurality of vertical segments and a plurality of horizontal segments, said planar element having a predetermined vertical dimension, each of said vertical segments extending across said vertical dimension, each of said segments having N square panel portions, adjacent panel portions being separated by a fold line, accordion folding of successive panel portions providing a square book like structure.
Claim 3
Dependent Claim
13 words
The folding structure of claim 1 wherein each of said panels is rigid.
Claim 4
Dependent Claim
12 words
The foldable structure of claim 1 wherein N equals at least 3.
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) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |