Abstract: The locking structure of this invention comprises: a gate pillar (1)as a first cylindrical member; a cover (2) as a second member fitted into the first member; locking projections (6) provided to an inner surface of the first member or to an outer surface of the second member, each of the locking projections comprising an inclined surface (6a) progressively rising from the front end side of one of the mating members, from which the other mating member is inserted, toward the rear end side and a locking surface (6b) formed at the rear end of the inclined surface (6a); and locking steps (7) formed in the other member and adapted to engage the locking surfaces (6a) when the two mating members are fitted together. The machining apparatus (A) forms the locking projections (6) by pressing blade portions (9) of tools (8) against the inner surface of the gate pillar (1) with impacts.

Abstract: The locking structure of this invention comprises: a gate pillar (1) as a first cylindrical member; a cover (2) as a second member fitted into the first member; locking projections (6) provided to an inner surface of the first member or to an outer surface of the second member, each of the locking projections comprising an inclined surface (6a) progressively rising from the front end side of one of the mating members, from which the other mating member is inserted, toward the rear end side and a locking surface (6b) formed at the rear end of the inclined surface (6a); and locking steps (7) formed in the other member and adapted to engage the locking surfaces (6a) when the two mating members are fitted together. The machining apparatus (A) forms the locking projections (6) by pressing blade portions (9) of tools (8) against the inner surface of the gate pillar (1) with impacts.

Abstract: A magnetic lock device easily can be fastened to a fastening member on an object or article such as the flap of a handbag, thereby saving labor costs incurred in fastening the device to the object. Also, any thickened portion that may occur on a fastening member when the device is fastened to the object can be minimized. The magnetic lock device includes a first element incorporating a permanent magnet that acts as a magnetically attracting part and a second element that acts as a magnetically attracted part. The second element includes an attachment having pointed lugs shaped like saw teeth. A receiver having a curled edge formed as an arc in cross section inside and around a peripheral margin of a fastening side receives the pointed lugs extending through the fastening member.

Abstract: A fastening construction for an attachment device of a magnetic lock device including a first element and a second element which may be magnetically coupled and decoupled is disclosed. The fastening construction permits the attachment device to be fastened to either or both of the first and second elements by orientating the attachment in the particular direction relative to the first and/or second elements. The attachment device includes a base plate having a protrusion to be attached to one side of at least one of the first and second elements, and a pair of legs extending therefrom in parallel with each other. On one side of the first and/or second elements, and a pair of legs extending therefrom in parallel with each other. On one side of the first and/or second elements, a recess is provided for engaging the protrusion on the base plate therein, thereby securing the base plate in the fixed position and orientating the same in the particular direction with regard to the attachment device.

Abstract: A magnetic closure device is configured to allow for a reduction in the magnetic gap as well as for adding mechanical strength to a cover for enclosing the magnet supply and other associated parts on one of two separate elements. The magnetic closure device includes a first element and a second element which are magnetically and mechanically coupled together and may be detached. The first element A includes an annular member formed to have a thick wall and mounted around the cover. The annular member includes ornamentation at its surface. The annular member may be formed from brass or other nonmagnetic materials, including plastics.

Abstract: A magnetic lock device provides a powerful magnetic attraction by making full use of the magnetic lines of force provided by a permanent magnet without causing. A first part provides a magnetic attracting action, and a second part that is magnetically attracted by the first part. The first part includes a permanent magnet, a first ferromagnetic plate rigidly attached to one side of the permanent magnet, and a nonmagnetic enclosure for packaging the permanent magnet and the first ferromagnetic plate into one unit. The second part includes a second ferromagnetic plate detachably attached to the other side of the permanent magnet and has a ferromagnetic rod extending therefrom adapted to be inserted into center bores through the permanent magnet and enclosure for engaging the first ferromagnetic plate or its ferromagnetic rod.

Abstract: A magnetic lock device comprises two parts, one of which provides the magnetic attraction (referred to as "part A") and the other of which is magnetically attracted by the part A (referred to as "part B"). The part A includes a permanent magnet having a center bore, a first ferromagnetic plate, and a nonmagnetic enclosure having a center bore aligned with the center bore of the permanent magnet for packaging the permanent magnet and first ferromagnetic plate. The part B includes a second ferromagentic plate that can engage the first ferromagnetic plate. Specifically, the nonmagnetic enclosure has a depressed surface on the side on which the second ferromagnetic plate engages the first ferromagnetic plate and which provides a sliding surface for the second ferromagnetic plate to be guided directly toward the center bores of the enclosure and permanent magnet.

Abstract: A magnetic lock closure device has a magnetically attracting part and a magnetically attracted part, the magnetically attracting part having an enlarged portion extending outwardly for allowing the magnetically attracted part to engage the magnetically attracting part through the center bore on it by means of the ferromagnetic rods on the two parts, without making any attempt to search for the center bore. Each of the magnetically attracting part and magnetically attracted part includes a fastener for fastening it to the corresponding part of a two-part article such as a bag without increasing the thickness of that part.

Abstract: A magnetic lock closure device has a first part or magnetically attracting part and a second part or magnetically attracted part, the first part including an annular permanent magnet having a center bore, a first ferromagnetic member formed like a disk plate and attached to one polarity side of the permanent magnet and a nonmagnetic outer cover having a center bore and enclosing the permanent magnet and first ferromagnetic member, and the second part including a second ferromagnetic member formed like a disk plate and adapted to be removably attached to the other polarity side of the permanent magnet. The first and second ferromagnetic members have respective ferromagnetic rods at the center extending therefrom and adapted to meet each other through the center bore when the first and second parts are coupled together.

Abstract: A door for use in a building, which includes a door frame defining an opening, and a louver arranged in the opening of the door frame. The louver includes a plurality of slats aligned parallel to each other. Each of the slats is connected at its opposite ends to the door frame so that the slat is pivoted about an axis generally coincidental with its centerline. The door also includes an adjusting assembly for pivoting the slats, and a connecting member for connecting all the slats. The adjusting assembly includes a rotatable lug member connected to one of the slats so that the slat is pivoted when the lug member is rotated. Due to the connecting member, the slats are simultaneously pivoted in the same direction when one of the slats is pivoted.

Abstract: A magnetic fastener which substantially excludes external leakage of magnetic flux therefrom. The magnetic fastener has a fixed element and a movable element. The fixed element includes a permanent magnet plate, upper and lower iron plates located on upper and lower faces of the permanent magnet plate, and an iron bar erected uprightly on the lower iron plate. The upper iron plate has an upper face flush with an upper end face of the iron bar to form a magnetic attracting face. The fixed element further includes a magnetic shield plate located above the upper iron plate around the magnetic attracting face with a magnetic gap interposed therebetween. The magnetic shield plate has a cylindrical portion which covers outer peripheries of the upper iron plate and the permanent magnet plate and contacts with an outer peripheral edge of the lower iron plate.