Binder for Document
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Sep 18, 2008
app pub date -
Jan 25, 2005
filing date -
Dec 27, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A binder for a document capable of providing excellent usability and workability by improving so that only the advantages of a conventional lever arch type ring binding implement can be utilized to increase the opening of a ring. The binding implement comprises a base part, the ring mounted on the base part and changeable between a closed attitude for binding the document and an open attitude in which the closed ring is partially opened to bind the document, and a switching mechanism mounted on the base part and switching the ring between the closed attitude and the open attitude. The ring comprises a first ring member and a second ring member brought into the open attitude and the closed attitude by the contact of the end parts thereof with each other or the separation of the end parts thereof from each other. The switching mechanism comprises a select lever swingably fitted to the base part. When the ring is in the open attitude, the select lever is so set that it can pass the opened portion of the ring and that the opening/closing speeds of the first ring member and the second ring member of the ring are different from each other.
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