US3744821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book and method of forming same
Assignee: Abildgaard Laboratories Inc
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Filing: 1971-09-23
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Granted: 1973-07-10
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Expires: 1991-09-23
Abstract
Abstract Book covers are attached to the sheets comprising the book by means of spaced plastic studs which pass through aligned holes in the covers and sheets. The studs project from a first plastic strip, which strip is positioned on one side of the book adjacent the spine edge. A second strip having holes spaced complementary to the studs is positioned on the opposite side of the book. The strips are pressed toward each other, the excess stud lengths are cut off near the outside of the second strip, and heads are formed on the severed ends of the strips, holding the strips, case, and sheets bound together. The case consists of two covers each formed with a flexible region just to sides of the strips opposite the spine which makes it possible to open the book to expose areas close to the spine.
Inventors
- 👤 W Abildgaard
- 👤 C Groswith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:18
CPC Classifications
B; B42; B42B; B42B5/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
186 words
A bound book comprising a plurality of sheets each formed with a plurality of spaced first apertures adjacent one margin, a front cover of about the size of said sheets formed with second apertures adjacent said one margin, a back cover of about the same size as said sheets, formed with third apertures, said second and third apertures spaced the same as said first apertures, at least one said cover formed with a flexible area spaced inward of said one margin, said flexible area of said one cover being substantially more bendable along a line parallel to said one edge than an area of said one cover remote from said one margin, a plurality of studs, first means fixing said studs to said one cover, said studs being initially of a length greater than the greatest thickness of a wide range of thickness of books, said studs extending entirely through said first and second apertures, said studs sheared close to said second cover and formed with heads larger than said third apertures and second means permanently securing said heads to the covers opposite said first means.
Claim 2
Dependent Claim
186 words
A bound book comprising a plurality of sheets each formed with a plurality of spaced first apertures adjacent one margin, a front cover of about the size of said sheets formed with second apertures adjacent said one margin, a back cover of about the same size as said sheets, formed with third apertures, said second and third apertures spaced the same as said first apertures, at least one said cover formed with a flexible area spaced inward of said one margin, said flexible area of said one cover being substantially more bendable along a line parallel to said one edge than an area of said one cover remote from said one margin, a plurality of studs, first means fixing said studs to said one cover, said studs being initially of a length greater than the greatest thickness of a wide range of thickness of books, said studs extending entirely through said first and second apertures, said studs sheared close to said second cover and formed with heads larger than said third apertures and second means permanently securing said heads to the covers opposite said first means.
Claim 3
Dependent Claim
44 words
A bound book according to claim 1 in which said first means comprises a first plastic self-supporting strip outside said back cover, said back cover formed with said third apertures, said studs fixed to said first plastic strip and extending through said third apertures.
Claim 4
Dependent Claim
57 words
A bound book according to claim 2 in which said second means comprising a second plastic self-supporting strip along the outside of said front cover, said second strip formed with fourth apertures spaced the same as said first apertures, said studs passing through said fourth apertures and said heads formed on the outside of said second strip.
Claim 5
Dependent Claim
28 words
A book according to claim 3 in which said flexible area is formed in said front cover and is substantially thinner than the remainder of said front cover.
Claim 6
Dependent Claim
34 words
A book according to claim 4 in which one said strip is of a thickness about equal to the difference between the thickness of said flexible area and said remainder of said first cover.
Claim 7
Dependent Claim
21 words
A book according to claim 4 in which a flexible area is formed in both said covers adjacent said one margin.
Claim 8
Dependent Claim
29 words
A book according to claim 6 in which said flexible area of one said cover is of extended width and is wrapped around the spine edge of said book.
Claim 9
Dependent Claim
18 words
A book according to claim 7 in which said flexible area is tucked under the other said cover.
Claim 10
Dependent Claim
26 words
A book according to claim 7 in which said flexible area of said one cover is joined to said flexible area of the other said cover.
Claim 11
Dependent Claim
48 words
A book according to claim 6 which further comprises a channel shaped cap having the base of said channel covering the spine of said book, said cap formed with fifth and sixth apertures in the sides of said channel, said studs passing through said fifth and sixth apertures.
Claim 12
Dependent Claim
23 words
A book accoRding to claim 10 in which said cap is formed of heat-shrinkable material and is shrunk to tightly cover said spine.
Claim 13
Dependent Claim
39 words
A book according to claim 1 in which said means attach said studs to said one cover, the other said cover formed with third apertures spaced the same as said first apertures, said studs extending through said third apertures.
Claim 14
Dependent Claim
27 words
A book according to claim 12 which further comprises a plastic self-supporting strip along the outside of said one cover, said studs fixed to said plastic strip.
Claim 15
Dependent Claim
30 words
A book according to claim 12 which further comprises a heat shrinkable connection between said covers around the spine of said book, said connection heat-shrunk to tightly cover said spine.
Claim 16
Independent Claim
221 words
A method of forming a book comprising the step of providing a plurality of sheets, a front and back cover of about the same size as said sheets each formed with a flexible area spaced inward of the spine margin more bendable along a line parallel to said spine margin than an area remote from said margin, a plurality of spaced studs, means fixing said studs to one said cover, said studs being initially of greater length than the greatest thickness of a wide range of thickness of books, means permanently fixing said studs to one said cover, a cap dimensioned to fit across the spine of the book to be formed and having third means for connection to each of said covers, said cap being of a heat shrinkable material, at least one said cover and each of said sheets formed with apertures spaced the same as said studs, and the further steps of inserting said studs through said apertures, pressing said covers toward each other with said sheets between said covers, cutting off excess lengths of said studs extending beyond said second cover, forming heads on the cut-off ends of said studs to secure said covers and strips in bound condition, and shrinking said cap by application of heat to form a neat, tight spine binding for said book.
Claim 17
Independent Claim
221 words
A method of forming a book comprising the step of providing a plurality of sheets, a front and back cover of about the same size as said sheets each formed with a flexible area spaced inward of the spine margin more bendable along a line parallel to said spine margin than an area remote from said margin, a plurality of spaced studs, means fixing said studs to one said cover, said studs being initially of greater length than the greatest thickness of a wide range of thickness of books, means permanently fixing said studs to one said cover, a cap dimensioned to fit across the spine of the book to be formed and having third means for connection to each of said covers, said cap being of a heat shrinkable material, at least one said cover and each of said sheets formed with apertures spaced the same as said studs, and the further steps of inserting said studs through said apertures, pressing said covers toward each other with said sheets between said covers, cutting off excess lengths of said studs extending beyond said second cover, forming heads on the cut-off ends of said studs to secure said covers and strips in bound condition, and shrinking said cap by application of heat to form a neat, tight spine binding for said book.
Claim 18
Dependent Claim
37 words
A method according to claim 15 in which said means fixing said studs comprises a first strip to which said studs are attached, said strip being narrow and lying along said flexible area of one said cover.
Claim 19
Dependent Claim
42 words
A method according to claim 16 which further comprises providing a second narrow strip lying along the flexible area of the other said cover formed with apertures to receive said studs, said heads being formed on the outside of said second strip.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |