Buckles – buttons – clasps – etc. – Having magnetic fastener
Patent
1995-09-01
1997-07-15
Brittain, James R.
Buckles, buttons, clasps, etc.
Having magnetic fastener
A44B 2100
Patent
active
056471017
ABSTRACT:
A magnetic fastener has a fastening element and an attracted element. The fastening element has a permanent magnet with a hole substantially parallel to the direction of the magnetic poles and a ferromagnetic plate on one side of the magnet facing the hole. The attracted element also has a ferromagnetic plate adapted for connecting to the open side side of the magnet facing the hole. Either one or both of the first and second plate can have a ferromagnetic rod that extends into the magnet hole. If only one rod is formed, the length of it extends substantially the depth of the magnet so that when the attracted element is connected to the fastening element, the end of the rod is near or contacting the opposing ferromagnetic plate through the magnet hole. If a rod is formed on each plate, the combined length of the rods is such that the ends thereof are near or touching within the magnet hole when the attracted element is fully engaged to the fastening element. In any event, at least one of the rods has a blind hole extending from the respective plate toward the respective end of the rod. The blind hole cross-sectional area is at least 2.2% but no more than 88.9% that of the rod.
REFERENCES:
patent: D247468 (1978-03-01), Morita
patent: 4480361 (1984-11-01), Morita
patent: 4736494 (1988-04-01), Marchesi
Brittain James R.
Tarmo Co. Ltd.
LandOfFree
Weight reduced magnetic fastener does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Weight reduced magnetic fastener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weight reduced magnetic fastener will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1483968