Patent US4285532A successfully refreshed from Google Patents.
US4285532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book marker
Assignee: Individual
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Filing: 1979-11-30
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Granted: 1981-08-25
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Expires: 1999-11-30
Abstract
Abstract A book marker useful to mark a page in a book as well as hold a page down while the book is being read is disclosed. The device has a frame which supports and guides a pair of cover engaging members. These markers have elongated C-shaped portions which hook over the upper and lower edges of a book cover and are biased towards one another. An arm is pivotally attached to an outer corner of one of the C-shaped portions. The end of the arm has a swingable page marker extending over the page of the book. Preferably this page marker is a thin stiff wire that minimizes any obstructions to reading the book. The arm is spring loaded causing the page marker to press against the page. This page marker can be swung out of the way when desired, for example when the book is first mounted or when a great number of pages are to be advanced. The device assists the reader by keeping the pages on one side of the book held down during reading, as well as marking the place when the book is closed.
Inventors
- 👤 Charles S. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:48
CPC Classifications
B; B42; B42D; B42D9/00; B42D9/008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
A device for marking the user's place in a book and for holding the pages of the book down, said book having a bookcover, comprising: a frame; first and second cover engaging members attached to said frame, at least one of said members being movably attached to said frame; said members having means for engaging the opposed edges of said book cover; means for biasing said members towards each other whereby said book cover is captured between saidd engaging means; an arm pivotably attached at one end to said first cover engaging member; and a page marker pivotally attached to said arm whereby when said device is secured to said bookcover, said page marker can be disposed in a first position extending over and in physical contact with at least one page of said book to cause said at least one page to be held between said page marker and said frame or a second position out of physical contact with said at least one page.
Claim 2
Independent Claim
166 words
A device for marking the user's place in a book and for holding the pages of the book down, said book having a bookcover, comprising: a frame; first and second cover engaging members attached to said frame, at least one of said members being movably attached to said frame; said members having means for engaging the opposed edges of said book cover; means for biasing said members towards each other whereby said book cover is captured between saidd engaging means; an arm pivotably attached at one end to said first cover engaging member; and a page marker pivotally attached to said arm whereby when said device is secured to said bookcover, said page marker can be disposed in a first position extending over and in physical contact with at least one page of said book to cause said at least one page to be held between said page marker and said frame or a second position out of physical contact with said at least one page.
Claim 3
Dependent Claim
17 words
The book marker of claim 1 wherein said arm is biased to pivot towards said securing means.
Claim 4
Dependent Claim
20 words
The book marker of claim 1 wherein said biasing means is a tension spring mounted between said cover engaging members.
Claim 5
Dependent Claim
176 words
A mechanical book marker comprising: a frame; a lower cover edge engaging member adapted for slidable engagement with said frame, said lower member having an outer end and an inner end; an upper cover edge engaging member adapted for slidable engagement with said frame, said upper member having an outer end and an inner end; said lower and upper members having opposed lower and upper cover engaging portions, said engaging portions formed to fit over the lower and upper edges of the cover of a book; means for biasing said lower and upper cover engaging members towards each other whereby the cover of said book is captured between said lower and upper cover engaging portions; an arm pivotably connected to at least one said cover engaging portion and having a pivot end and a free end and biased to have the free end pivot towards said at least one cover engaging portion; and a page wire pivotally attached to said free end, said wire being pivotable in a plane parallel to the axis of said arm.
Claim 6
Dependent Claim
176 words
A mechanical book marker comprising: a frame; a lower cover edge engaging member adapted for slidable engagement with said frame, said lower member having an outer end and an inner end; an upper cover edge engaging member adapted for slidable engagement with said frame, said upper member having an outer end and an inner end; said lower and upper members having opposed lower and upper cover engaging portions, said engaging portions formed to fit over the lower and upper edges of the cover of a book; means for biasing said lower and upper cover engaging members towards each other whereby the cover of said book is captured between said lower and upper cover engaging portions; an arm pivotably connected to at least one said cover engaging portion and having a pivot end and a free end and biased to have the free end pivot towards said at least one cover engaging portion; and a page wire pivotally attached to said free end, said wire being pivotable in a plane parallel to the axis of said arm.
Claim 7
Dependent Claim
72 words
The device of claim 4 wherein: said page wire has a first position extending over the page of the book so that the page of the book is urged against the cover of the book by the action of the biased arm; and said page wire has a second position generally parallel to the extend outwardly from the axis of said arm whereby the pages of the book are free to turn.
References Cited (Backward Citations)
US1067927A
Cited
US1057004A
Cited
US1959843A
Cited
US1947053A
Cited
US2699748A
Cited
US3227415A
Cited
US3661405A
Cited
US3889914A
Cited
US4047688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |