Binder device releasably engaging aperture or notch of sheet – Sheet retainer travels arcuate path – Coplanar with axis of rotation
Patent
1994-01-10
1995-04-11
Fridie, Willmon
Binder device releasably engaging aperture or notch of sheet
Sheet retainer travels arcuate path
Coplanar with axis of rotation
402 26, 402 68, B42F 304
Patent
active
054052092
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a paper binder folder, more particularly to a binder which can be attached to a folder, and which binder can be readily opened and closed for the insertion of and removal of paper from the binder.
BACKGROUND OF THE INVENTION
Many types of folders or binders for the insertion of pages are well known. As far as is known these require a solid metal or plastic member along the spine of the folder to which the rings or other holding members are attached, and sometimes also contain some form of release mechanism in the form of levers, springs and the like. While these are satisfactory in many respects, sometimes the cooperating portions of the posts or rings become misplaced and thus do not completely meet so that a page or pages can become removed. Also the spring action of various binders such as three or four ring binders is very strong to such an extent that if the user is not careful injury can occur if the fingers are between the two portions of the ring closing on each other.
Also there are known paper binders having two flexible arms, the ends of which are pushed through a manila folder, and after the paper sheets are placed thereon the arms are bent parallel to the surface of the paper sheets, a metal washer desirably being placed over the arms before they are bent parallel to the paper. However these are only suitable for thin manila folders, and the arms often have the pointed ends upstanding to a degree so that injury to the users hands or fingers may occur.
U.S. Pat. No. 4,886,390 discloses a binder having a pair of rings loosely attached to a file or folder. The rings are split and provided with a hinge so that the rings can be opened at the split to receive perforations in the papers to be attached to it. A locking device is provided at the ends of the split to prevent circumferential rotation of the rings.
GB 2190331 shows a ring binder which includes a spine in the form of a rod and rings secured to the rod. Each ring is in two halves which are pivotally connected by a pivot pin at one end and are provided at the other end with hooks and recesses which are engageable with one another to secure the halves of the rings to each other.
ZA 8102974 is directed to a ring binder having fixed half-rings comprising pairs of prongs projecting from a base plate. The prongs of each pair are movable relative to each other from an open position to a closed position to define a continuous ring.
BRIEF DESCRIPTION OF THE INVENTION
It is an object of this invention to provide a binder for holding papers which will overcome one or more deficiencies of the known form of binders.
It is a further objection of this invention to provide U-shaped paper binder loops which are attached to one leaf of the cover without the requirement of a spine or other longitudinal strengthening member on the cover.
A further object of the invention is to provide the U-shaped binder loops with means whereby each loop is formed in two portions with one portion being able to pivot relative to the other so that the paper sheets can be inserted thereon.
A still further object is to provide that while one portion of the U-shaped loop can be pivoted relative to the other, the other U-shaped loop may not be rotated or pivoted relative to the cover.
Thus there is provided according to the invention a paper binder, the paper binder comprising at least one U-shaped loop adapted to be attached to a leaf of a folder, said U-shaped loop having a first portion and a second portion, said first portion being fixedly attached to said leaf, and said second portion pivotally attached to said leaf so that the second portion may be pivoted relative to the first portion to open and releasably engage the first portion to close the U-shaped loop.
Preferably the two portions of the U-shaped loop can be attached to the leaf by a clip engaging both portions of the side of the leaf opposite to the U-shaped loop.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to more fully describe the invention reference will now be made to the accompa
REFERENCES:
patent: 1344971 (1920-06-01), Allison
patent: 2855935 (1958-10-01), Ham et al.
patent: 3503695 (1970-03-01), Giampa
patent: 4790680 (1988-12-01), Givati et al.
Johns Darby R.
Johns Yvonne D.
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