Universal bookholder

• US 7,731,147 B2
• Filed: 01/15/2004
• Issued: 06/08/2010
• Est. Priority Date: 08/26/2003
• Status: Expired due to Fees

• Current Assignee: Soon-Ja Cho
• Original Assignee: Soon-Ja Cho
• Inventors: Rha, Sang-Hoon
• Primary Examiner(s): Baxter; Gwendolyn
• Application Number:
  US10/569,102
• Publication Number:
  US 20070007422A1
• Time in Patent Office: 2,336 Days
• Field of Search: 248/441.1, 248/445, 248/447, 248/451, 248/452, 248/453, 248/461, 281 45- 50, 108/3, D19/88, D19/91
• US Class Current: 248/447
• CPC Class Codes: A47B 23/002 supported only by a person
• CPC Class Codes: A47B 23/007 Overhead reading-racks or book-rests
• CPC Class Codes: A47B 23/042 Book-rests or note-book holders resting on tables releasably mounted A47B23/02
• CPC Class Codes: A47B 23/06 characterised by association with auxiliary devices, e.g. line indicators, leaf turners, lampholders, book or page holdersspot indicators, leaf turners, per se B42D9/00

Abstract

A universal bookholder which receives a book therein in a folder type, and which is portable and usable anywhere at any time to allow a user to read a book thereon is disclosed.

The universal bookholder includes a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being opened, a supporting unit combined between the pair of cover members so as to be folded with the cover members, a string installed in the supporting unit to traverse papers of the book for fixing the received book, at least one guide member mounted in the pair of cover members, and a clamp movably combined to the guide member for fixing a paper of the received book.

Claims

1. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book; and

at least one clamp installed inside the cover member so as to fix the pages of the received book,

wherein the clamp has a lifting unit for selectively fixing a height of the clamp depending on a thickness of the book,

wherein the lifting unit comprises a first block, and a second block in which the first block selectively moves up and down,

wherein the first block includes a hooking protrusion at one side, and

wherein the second block has teeth which is formed along the inner sidewall of the second block so as to engage with the hooking protrusion selectively.

2. A bookholder according to claim 1, further comprising:

a release protrusion capable of controlling the locking between the hooking protrusion and the teeth; and

a spring for ascending the first block.

3. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book; and

at least one clamp installed inside the cover member so as to fix the pages of the received book,

wherein the clamp has a lifting unit for selectively fixing a height of the clamp depending on a thickness of the book,

wherein the lifting unit comprises a first block, and a second block in which the first block selectively moves up and down,

wherein the first block includes an elastic hook which has a hooking protrusion at one side and a release protrusion adjacent to the hooking protrusion,

wherein the second block has a guide slot on its one sidewall and teeth formed along the inner sidewall of the second block, and

wherein the bookholder further comprises a spring for ascending the first block.

4. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book; and

at least one clamp installed inside the cover member so as to fix the pages of the received book,

wherein a vertical guide having teeth is formed on the inside of the cover member longitudinally, and

an elastic protrusion corresponding to the teeth is formed on the guide member so that the elastic protrusion is engaged at the selected position of the vertical guide.

5. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book; and

at least one clamp installed inside the cover member so as to fix the pages of the received book,

wherein the clamp has a lifting unit for selectively fixing a height of the clamp depending on a thickness of the book, and

the bookholder further comprising a locking means for keeping the cover members unfolded,

wherein the locking means comprises;

at least one push hook provided on either the supporting unit or the cover member; and

a hook groove formed on either the cover member or the supporting unit so that the push hook is inserted therein.

6. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book; and

at least one clamp installed inside the cover member so as to fix the pages of the received book,

wherein the clamp has a lifting unit for selectively fixing a height of the clamp depending on a thickness of the book, and

the bookholder further comprising a locking means for keeping the cover members unfolded,

wherein the locking means comprises;

a bar installed on one of the cover members;

a hook groove formed on the other one of the cover members so that the bar is inserted therein; and

a switch for biasing the bar toward the hook groove.

7. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book;

at least one clamp installed inside the cover member so as to fix the pages of the received book;

at least one support plate combined to an inner side of the cover member in order to support a book cover; and

an elastic member for elastically biasing the support plate to hold up and support the book cover,

wherein the support plate has width and length extension units which are selectively extendable according to a size of the book respectively.

8. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book;

at least one clamp installed inside the cover member so as to fix the pages of the received book;

at least one support plate combined to an inner side of the cover member in order to support a book cover; and

an elastic member for elastically biasing the support plate to hold up and support the book cover,

wherein the support plate has an inclined portion for supporting an inclined book cover and a flat portion bent from the inclined portion for supporting the book cover.

9. A bookholder, comprising:

a pair of cover members for forming an inner space to receive a book therein when being folded and for supporting both sides of the book when being unfolded;

a supporting unit combined between the pair of cover members so as to be folded with respect to the each cover member;

a string longitudinally installed inside the supporting unit to fix the spine of the book;

at least one clamp installed inside the cover member so as to fix the pages of the received book;

at least one support plate combined to an inner side of the cover member in order to support a book cover;

an elastic member for elastically biasing the support plate to hold up and support the book cover;

a recess inside the cover member so as to receive the support plate therein; and

a hooking member inside the cover member so as to lock the support plate which is received in the recess when not in use.