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US 4,244,085 AGranted
Pin for documents
OwnerWei Tsao-Tsunginventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved pin device which comprises a pinning means (hereinafter referred to as A means) and a fastening means (hereinafter referred to as B means). The present invention provides a fastener that does not loosen easily and slip off like an ordinary pin and can function both as a pin and a clip.
Claims1
A pin device capable of performing both clipping and pinning functions, said device comprising a single piece of wire having one sharpened end and one blunt end and being bent into two segments;
- the first said segment being substantially straight and having the said sharpened end, the second said segment being bent through a first loop such that the wire in the second segment crosses said straight segment, said second segment being bent into a second loop in reverse direction to said first loop, so as to provide a second crossing of said straight segment near said sharpened end of the first segment, said second segment being generally S-shaped, with the said blunt end being substantially contained within the profile of the S and being positioned adjacent said sharpened end, said two loops of said second segment being substantially in the same plane and on the same side of said straight segment but being formed with curvature from the plane so as to provide a resiliently biased contact between said first and second segments at the point of said second crossing when in a first position, said bias contact providing retaining force for objects inserted between said segments whereby said device may be employed as a spring clip, said first and second loops being large enough to permit the said second segment to be elastically deformed in its plane until said blunt end of said second segment is removed from contact with said straight segment, permitting said blunt end to be elastically deformed out of the plane of the first loop, said blunt end subsequently being engaged on the side of said straight segment which is opposite to that of the said first position, the said blunt end being elastically moved to a second position wherein said second segment is parallel to its location in said first position, whereby said blunt end provides a retention clip for material which has been pierced by said straight segment functioning as a pin.
Dependencies are inferred from the claim text.