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US 7,731,147 B2Granted
Universal bookholder
AssigneeSoon-Ja Cho
InventorSang-Hoon Rha
Life of this patent
Estimating the term…
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.
Claims9
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.
6 more elements
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.
7 more elements
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.
4 more elements
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.
8 more elements
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.
9 more elements
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.
5 more elements
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.
5 more elements
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.
6 more elements
Dependencies are inferred from the claim text.