US3638967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loose leaf ring binder
Assignee: Jeppesen Foreflight Inc
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Filing: 1970-10-13
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Granted: 1972-02-01
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Expires: 1990-10-13
Abstract
Abstract A loose leaf ring-type binder which also functions as a rigid viewing stand for a plurality of pages or flipover cards. The two covers of the binder include offset leg portions terminating at the hinge points with the back of the binder. When the covers are folded back at a certain angle, the leg portions of the covers are brought into juxtaposed contact with the back of the binder thereby restricting any movement of the back about the two hinge points to provide a rigid support for the cards carried in the binder.
Inventors
- 👤 Donald L Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
B; B42; B42F; B42F13/00; B42F13/40; B42F13/402
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A loose leaf ring binder for containing and supporting a plurality of cards comprising: a binder back; ring means attached to the binder back for supporting the cards; cover means hingeably attached to opposite sides of the binder back; the cover means including on each side, a planar portion substantially covering the material contained in the binder, and a leg portion extending from the planar portions at an acute angle to the hinge point with the binder back, said acute angle being such that when the cover means are folded back towards each other at a second angle, the leg portions come into juxtaposed parallel contact with the binder back preventing any pivotal movement between the binder back and the cover means, whereby a rigid support is provided for the cards when the planar portions are held at said second angle.
Claim 2
Dependent Claim
141 words
A loose leaf ring binder for containing and supporting a plurality of cards comprising: a binder back; ring means attached to the binder back for supporting the cards; cover means hingeably attached to opposite sides of the binder back; the cover means including on each side, a planar portion substantially covering the material contained in the binder, and a leg portion extending from the planar portions at an acute angle to the hinge point with the binder back, said acute angle being such that when the cover means are folded back towards each other at a second angle, the leg portions come into juxtaposed parallel contact with the binder back preventing any pivotal movement between the binder back and the cover means, whereby a rigid support is provided for the cards when the planar portions are held at said second angle.
Claim 3
Dependent Claim
35 words
A loose leaf binder as set forth in claim 1, wherein the leg portions of he cover means extend a distance from the planar portions no greater than one-half the width of the bindEr book.
Claim 4
Dependent Claim
20 words
A loose leaf binder as set forth in claim 1, wherein the ring means is wider than the binder back.
Claim 5
Dependent Claim
25 words
A loose leaf binder as set forth in claim 1, wherein the ring means has a width at least twice that of the binder back.
Claim 6
Dependent Claim
50 words
A loose leaf binder as set forth in claim 1, wherein the ring means has a width at least twice that of the binder back, and the leg portions of the cover means extend a distance from the planar portions no greater than one-half the width of the binder back.
Claim 7
Dependent Claim
40 words
A loose leaf binder as set forth in claim 1, including mounting means attached to each of the planar portions which can be engaged with a rigid base member so that said second angle between the cover means is maintained.
Claim 8
Dependent Claim
62 words
A loose leaf binder as set forth in claim 1, wherein the planar portions of the cover means have an outer edge at the opposite side from the leg portions; mounting means attached along the outer edge of each planar portion which can releasably engage a base member thereby maintaining a fixed distance between the two outer edges of the cover means.
Claim 9
Dependent Claim
30 words
A loose leaf binder as set forth in claim 1, including mounting means releasably attached to each of the planar portions for maintaining said second angle between the cover means.
Claim 10
Dependent Claim
25 words
A loose leaf binder as set forth in claim 1, wherein the binder back and cover means are integrally formed from a semiflexible plastic material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |