Buckles – buttons – clasps – etc. – Having magnetic fastener
Patent
1983-05-11
1984-06-26
Hirsch, Paul J.
Buckles, buttons, clasps, etc.
Having magnetic fastener
A44B 1700, A44C 1310
Patent
active
044557191
ABSTRACT:
A magnetic fastener comprising a first fastening element, including a permanent magnet having oppositely facing pole faces of opposite polarity and at least one peripheral edge, the magnet having a hole extending between the first pole face and the second pole face, a first ferromagnetic plate in contact with the first pole face, a first fastening means secured to the first ferromagnetic plate, a first ferromagnetic rod disposed within and coaxial with the hole and secured to the first ferromagnetic plate, a magnetic shielding ferromagnetic plate in support with the second pole face and having an opening passing therethrough, which opening is coaxial with the hole, and a nonmagnetic housing surrounding the at least one peripheral edge of the permanent magnet, the non-magnetic housing securing the first ferromagnetic plate and the magnetic shielding ferromagnetic plate to the permanent magnet by means of inwardly radial extending edge portions, which edge portion of said housing adjacent the magnetic shielding ferromagnetic plate defines an aperture coaxial with the hole, and a second fastening element detachably engaging the first fastening element, including a second ferromagnetic plate, a second fastening means secured to the second ferromagnetic plate, and a second ferromagnetic rod secured to the second ferromagnetic plate, so that when the first and second fastening elements are engaged, the first ferromagnetic rod projects into said hole and contacts the second ferromagnetic rod and the second ferromagnetic plate contacts the magnetic shielding ferromagnetic plate or the edge portion of the housing adjacent thereto.
REFERENCES:
patent: 496408 (1893-05-01), Hall
patent: 1829361 (1931-10-01), Lane
patent: 2970857 (1961-02-01), Squire
patent: 3009225 (1961-11-01), Budreck
patent: 3034025 (1962-05-01), Budreck et al.
patent: 3041697 (1962-07-01), Budreck
patent: 3086268 (1963-04-01), Chaffin, Jr.
patent: 3111737 (1963-11-01), Heil
patent: 3141216 (1964-07-01), Brett
patent: 3324521 (1967-06-01), Humiston
patent: 3372443 (1968-03-01), Daddona, Jr.
patent: 4021891 (1977-05-01), Morita
LandOfFree
Stopper using a magnet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stopper using a magnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stopper using a magnet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2225602