Patent US3009583A successfully refreshed from Google Patents.
Patent US3572957A successfully refreshed from Google Patents.
US3572957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbed-backbone binder construction
Assignee: Individual
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Filing: 1968-08-02
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Granted: 1971-03-30
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Expires: 1988-08-02
Abstract
Abstract A ribbed-backbone binder construction for use in a looseleaf binder having a typical snap ring mechanism. The board stiffener has a plurality of elongated openings extending substantially the entire width of the stiffener and on either or both sides of the ring mechanism support section. The outer and inner covers are joined through the openings to form a plurality of alternating ribs and hinges, allowing the backbone portion to expand for accommodation of increased capacities within the binder.
Inventors
- 👤 Gerson Strassberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:01
CPC Classifications
B; B42; B42F; B42F13/00; B42F13/0006; B42F13/0013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
320 words
A ribbed-backbone binder construction to accommodate varying numbers of looseleaf sheets as desired comprising: a. retaining means having snap rings allowing addition and removal of sheets to vary the volume of sheets, the snap rings defining a circumference at the outer diameter thereof; b. a binder with a ribbed-backbone portion, the binder including a single piece board stiffener having a ribbed portion with a centrally positioned support section and a plurality of elongated openings, therein, substantially centrally positioned on both sides of the support section and extending along slightly less than the width thereof, and said stiffener further including members extending outwardly of the ribbed portion inner and outer covers covering the board stiffener and enjoined along the outer edges and through the elongated openings, the joinder of the covers in the openings forming hinges, the covers and stiffener portions between adjacent openings forming ribs, the support section and adjacent portions of said covers forming a central portion and said members and portions of said covers adjacent thereto forming cover panels, said support portion having a width substantially less than the diameter of said rings and said retaining means being secured to said support portion, and c. the ribs abutting the snap rings along the circumference thereof when a small amount of sheets are secured therein, the ribs extending around substantially the entire circumference of said rings, forming a cylindrical portion, allowing the cover panels to lie in substantial flat abutment against the outside sheets, and also allowing gripping of the binder around the rings at the cylindrically formed portion with said cover panels lying open in alignment and the sheets and material thereon being visible, while the binder is held by a single hand of the user, and the ribs being extendable away from the retaining means when a large number of sheets is secured therein, yet still allowing the cover portions to lie flatly against the outside sheets.
Claim 2
Dependent Claim
320 words
A ribbed-backbone binder construction to accommodate varying numbers of looseleaf sheets as desired comprising: a. retaining means having snap rings allowing addition and removal of sheets to vary the volume of sheets, the snap rings defining a circumference at the outer diameter thereof; b. a binder with a ribbed-backbone portion, the binder including a single piece board stiffener having a ribbed portion with a centrally positioned support section and a plurality of elongated openings, therein, substantially centrally positioned on both sides of the support section and extending along slightly less than the width thereof, and said stiffener further including members extending outwardly of the ribbed portion inner and outer covers covering the board stiffener and enjoined along the outer edges and through the elongated openings, the joinder of the covers in the openings forming hinges, the covers and stiffener portions between adjacent openings forming ribs, the support section and adjacent portions of said covers forming a central portion and said members and portions of said covers adjacent thereto forming cover panels, said support portion having a width substantially less than the diameter of said rings and said retaining means being secured to said support portion, and c. the ribs abutting the snap rings along the circumference thereof when a small amount of sheets are secured therein, the ribs extending around substantially the entire circumference of said rings, forming a cylindrical portion, allowing the cover panels to lie in substantial flat abutment against the outside sheets, and also allowing gripping of the binder around the rings at the cylindrically formed portion with said cover panels lying open in alignment and the sheets and material thereon being visible, while the binder is held by a single hand of the user, and the ribs being extendable away from the retaining means when a large number of sheets is secured therein, yet still allowing the cover portions to lie flatly against the outside sheets.
References Cited (Backward Citations)
US908596A
Cited
US1802794A
Cited
US1724407A
Cited
US2217773A
Cited
US2478132A
Cited
US3032040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |