US4470571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book holder extender
Assignee: Individual
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Filing: 1982-06-17
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Granted: 1984-09-11
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Expires: 2002-06-17
Abstract
Abstract An improved book holder having a backrest portion which connects a base plate for supporting the lower edge of an open book and a top plate which is adjustable to close toward and contact with the upper edge of the open book wherein the improvement comprises a plurality of extender means attached to either the base plate or the top plate and inclined such as to accept the hardbound cover of the open book at or near the backrest and to close inwardly upon the pages such as to make contact with the pages; such contact being made with friction pad members secured to the extender means for preventing the accidental page turning of the book. The use of such extenders in combination with the book holder allows the book holder to easily hold hardbound books, loose leaf pages in hard cover binders and the like.
Inventors
- 👤 Don A. Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:23
CPC Classifications
A; A47; A47B; A47B19/00; A47B19/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
237 words
In a book holder comprising a base plate for supporting the lower edge of an open book, a backrest attached to the base plate and a top plate slidably attached to the backrest such that said top plate can be adjusted with respect to the base plate and make contact with the upper edge of said open book and wherein the base plate and top plate are provided with friction pads which make frictional contact with the pages on an open book and which compress into recesses in said top plate and base plate thus exposing a rearwardly positioned edge, the specific improvement comprising: (a) a plurality of extender means attached to said book holder wherein said extender means operatively insert into a groove in the rearward portion of said extender means such that said extender means forms an inclined surface at the base plate nd at the top plate such as to accept the hardbound cover of said open book at a position on the extender means near said backrest and said inclined surfaces slope upward from said base plate and downward from said top plate relative to a displacement away from said bookrest such as to make contact with the pages on said open book; and (b) a frictional pad member secured to said extender means which makes contact with said pages of said open book for preventing the accidental page turning of said book.
Claim 2
Dependent Claim
237 words
In a book holder comprising a base plate for supporting the lower edge of an open book, a backrest attached to the base plate and a top plate slidably attached to the backrest such that said top plate can be adjusted with respect to the base plate and make contact with the upper edge of said open book and wherein the base plate and top plate are provided with friction pads which make frictional contact with the pages on an open book and which compress into recesses in said top plate and base plate thus exposing a rearwardly positioned edge, the specific improvement comprising: (a) a plurality of extender means attached to said book holder wherein said extender means operatively insert into a groove in the rearward portion of said extender means such that said extender means forms an inclined surface at the base plate nd at the top plate such as to accept the hardbound cover of said open book at a position on the extender means near said backrest and said inclined surfaces slope upward from said base plate and downward from said top plate relative to a displacement away from said bookrest such as to make contact with the pages on said open book; and (b) a frictional pad member secured to said extender means which makes contact with said pages of said open book for preventing the accidental page turning of said book.
Claim 3
Dependent Claim
17 words
An improved book holder of claim 1 wherein said friction pad members are made of foamed urethane.
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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |