Ring mechanism for loose-leaf binders
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 18, 1983
Grant Date -
N/A
app pub date -
Sep 23, 1980
filing date -
Sep 23, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A loose-leaf binder has a cover and a ring mechanism. The ring mechanism includes a resilient base plate with curled edges and at least one rib extending laterally and downwardly. The ring mechanism also includes a pair of blades beneath the base plate and between the curled edges, the combined width of the blades being slightly greater than the distance between the curled edges. Also, the blades each have at least one slot along their outside edge to engage the rib. At least one pair of ring members fixed to the blades extend above the base plate to meet in a releasable juncture.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully