Abstract: The present invention relates to a fastener means that utilizes the attraction of a permanent magnet.The present invention is an improvement on the female member having a slide plate which is to be attracted by the permanent magnet of the male member. More particularly, the improvement relates to a first and a second plates between which the slide plate is to be slidably inserted. By providing catches and indented portions which receive the catches in the first and the second plates and by welding the first and the second plates firmly while the catches are fitted in the indented portions.

Abstract: A magnetic fastener utilizes the attraction force of a permanent magnet which comprises an attraction member comprising a permanent magnet having a through-hole extending between the magnetic poles and a ferromagnetic member attached on one of the magnetic poles of the permanent magnet, and a attracted member to be attracted to the ferromagnetic member via the through-hole of the permenant magnet. The angle formed by the magnetic pole surface to which the attracted member is attracted and the peripheral side face extending between the magnetic pole surfaces of the permanent magnetic is 95.degree. or larger.

Abstract: The present invention relates to a fastener means which utilizes the attraction force of a permanent magnet and which is characterized in that a ferromagnetic member attached to one of the magnetic pole surfaces of an annular permanent magnet constituting the fastener means and having a through-hole extending between the magnetic poles and a ferromagnetic member attached to the other magnetic pole are detachably attracted to each other via said through-hole and that the surfaces of the permanent magnet to which said ferromagnetic members are not attached, excluding the inner peripheral surface of the through-hole or including the inner peripheral surface of the through-hole at its mouth, are covered with a ferromagnetic casing or a ferromagnetic material such as ferromagnetically plated sheet having the thickness of from 0.03 to 0.20 mm.

Abstract: A magnetic fastener has a female member comprised of a permanent magnet having an axial hole therethrough and a ferromagnetic plate on one pole surface thereof, and a male member comprising a ferromagnetic plate-shaped member removably engageable against the other pole face of the permanent magnet and having a projection extending therefrom insertable into the hole of the permanent magnet, the hole in the permanent magnet having an oblong or elongated shape having a longer diameter and a shorter diameter, the shorter diameter providing little or no clearance between the hole in the area of the shorter diameter and the projecting portion on the removable member, and the longer diameter being substantially greater than the diameter of the projection so that when the parts are separated for unfastening and attempt is made to incline or tilt the projection with respect to the central axis of the hole in the direction of the shorter diameter, the outer surface of the projecting portion will engage against the side

Abstract: The present invention relates to improvements in door stoppers for keeping doors open. More particularly, the invention offers door stoppers which facilitate opening/closing of the door by the attraction of a permanent magnet, prevent damage to the attracting member by causing the attracting member and the attracted member comprising such a door stopper to gradually attract each other by a buffer action, and make either one of the attracting member or the attracted member swingable so as to enable secure and stable attraction.

Abstract: A magnetic fastener means, using a simple to manufacture attraction member made up of a permanent magnet with a through hole and a ferromagnetic plate which has a projection that is interference fitted into the through hole, and an attracted member which has a ferromagnetic plate that contacts the attraction member ferromagnetic plate projection when the fastener is closed.

Abstract: A magnetic fastener comprising a permanent magnet member having first and second sides of opposite polarity, a first magnetic pole plate attached at the first side of the magnet member, a second magnetic pole plate removably attachable on the second side of the magnet member, the pole plates being magnetically attracted to the magnet member and to each other through the magnet member, the permanent magnet member being a dispersion of hard magnetic powder in a matrix of synthetic resin, and the first magnetic pole plate being integrally attached to the permanent magnet member by the permanent magnet member itself. The permanent magnet member may be comprised of a molded member made by casting wherein the first magnetic pole plate is at least partly incorporated in the molded magnetic member or may be embedded therein.

Abstract: A case or bag for protecting and housing cards in which magnetically stored records are read out by a device to make various identifications, such as bank cards for automatic withdrawals, credit cards for purchasing goods and services on credit, membership cards for identifying membership of various clubs, and cards for identifying the seal of an individual registered with a government office, the case or bag having a portion made of a magnetic shielding plate or mesh which acts to prevent magnetic force from entering from outside the case and affecting the stored record in the cards.

Abstract: A magnetic clasp which protects magnetic records from being adversely affected by the magnetic induction lines of a magnet characterized in that the lines of magnetic induction inherent to the magnet are conveyed by the ferromagnetic end surface rather than diverged to outside in order to maximize the attracting power of the magnet. The paths of the magnetic induction lines are formed at a center hole bored in the magnet. The invention may be used as a clasp or lock for bags, boxes, bands or chains and has wide application for suitcases, handbags and purses.

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

Abstract: A magnetic fastener using a permanent magnet. A first ferromagnetic plate and a permanent magnet attached thereto are mounted on a body of a handbag or the like, and a second ferromagnetic plate is mounted on a cover thereof so that the second ferromagnetic plate may be magnetically fastened to the first when the cover is closed.

Abstract: A magnetic lock closure used for a handbag or the like for closure comprising two separate parts at least one of which is formed as a female device in a permanent magnet of a cylindrical or any other shape having a hole or slit centrally thereof and its opposite ends magnetized in a different polarity, the female device including a piece of ferromagnetic material firmly provided at one end thereof and having a rod portion for insertion into the hole or slit such that the force of its magnetism is centered about the piece of ferromagnetic material which attracts the other part or male device formed of ferromagnetic material.