Abstract: A magnetic latch includes a first member having a protrusion and a second member engaging the protrusion to prevent the first member and the second member from sliding relatively to one another. The second member includes a first magnet to attract the first member and a first solid non-magnetic member located inside a cavity of the first magnet to enhance attraction between the first member and the second member. The second member can be provided with a backing plate to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member can also include a second magnet to attract the first member and a second solid non-magnetic member located between the first magnet and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.

Abstract: A magnetic latch includes a first member having a protrusion and a second member engaging the protrusion to prevent the first member and the second member from sliding relatively to one another. The second member includes a first magnet to attract the first member and a first solid nonmagnetic member located inside a cavity of the first magnet to enhance attraction between the first member and the second member. The second member can be provided with a backing plate to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member can also include a second magnet to attract the first member and a second solid non-magnetic member located between the first magnet and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.

Abstract: A magnetic latch includes a first member having a protrusion and a second member engaging the protrusion to prevent the first member and the second member from sliding relatively to one another. The second member includes a first magnet to attract the first member and a first solid non-magnetic member located inside a cavity of the first magnet to enhance attraction between the first member and the second member. The second member can be provided with a backing plate to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member can also include a second magnet to attract the first member and a second solid non-magnetic member located between the first magnet and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.

Abstract: A magnetic latch includes a first member having a protrusion and a second member engaging the protrusion to prevent the first member and the second member from sliding relatively to one another. The second member includes a first magnet to attract the first member and a first solid non-magnetic member located inside a cavity of the first magnet to enhance attraction between the first member and the second member. The second member can be provided with a backing plate to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member can also include a second magnet to attract the first member and a second solid non-magnetic member located between the first magnet and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.

Abstract: A magnetic latch includes a first member having a protrusion and a second member engaging the protrusion to prevent the first member and the second member from sliding relatively to one another. The second member includes a first magnet to attract the first member and a first solid non-magnetic member located inside a cavity of the first magnet to enhance attraction between the first member and the second member. The second member can be provided with a backing plate to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member can also include a second magnet to attract the first member and a second solid non-magnetic member located between the first magnet and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.

Abstract: A safety cover for an electric receptacle has a mounting plate fitting over an electrical receptacle, and a cover assembly with a cover edge extending around the periphery thereof, the mounting plate having an edge engagable surface thereon corresponding in shape to the cover edge. The cover assembly is mountable on the mounting plate between a closed and an open position. The cover assembly has a plurality of locking projections spaced around the periphery of the cover assembly at positions so that they are incapable of simultaneous operation by a hand below a predetermined size. When the cover assembly is closed, locking hooks on the locking projections engage in locking hook receiving apertures in the mounting plate structure and the cover edge is snugly abutted against the edge engagable surface.

Abstract: A snap fastener has a female member including a snap type resilient clamp having a dished resilient actuator plate and a plurality of legs depending from the periphery thereof having inwardly extending hooks on the free ends and a casing in which the clamp is positioned, and a male member having a hook receiving recess therearound and insertable into the space within the legs with the hook receiving recess in opposed relation to the hooks for causing the male member to be gripped by the hooks when the clamp is in a closed position and for freeing the male member for movement into and out of the space when the snap type resilient clamp is in an open position.

Abstract: A protective cover for a handled carrying container is constituted by a pair of opposed side walls having a size greater than the corresponding walls of the carrying container and having top, side and bottom edges, the top edges and the side edges of the respective side walls being joined to each other, the bottom edges being unjoined. A handle receving aperture is provided where the top edges are joined. A handle engaging sleeve or elastic collar is provided around the handle receiving aperture for engaging a container handle in substantially watertight engagement.

Abstract: A safety cover for an electrical receptacle has a receiving plate fitting over an electrical receptacle, and a cover assembly having a cover edge extending around the periphery thereof hinged to the receiving plate to pivot between a closed and an open position. The cover assembly has a plurality of locking projections spaced around the periphery of the cover assembly at positions so that they are incapable of simultaneous operation by a hand below a predetermined size. When the cover assembly is closed, locking hooks on the locking projections engage in locking hook apertures in the receiving plate structure and the cover edge is snugly abutted against the receiving plate structure, and the cover assembly can be moved to the open position only by simultaneous deformation of the cover assembly at the positions of the locking hooks sufficient to move the locking hooks sufficientyl far inwardly to free said locking hooks from the locking hook receiving apertures.

Abstract: A safety cover for preventing access to an electrical receptacle while the receptacle contains a plug includes a receiving plate and a box-shaped cover assembly which can be locked over the receiving plate. The cover assembly has a plurality of locking flanges each of which can be independently depressed and thereby moved in and out of means for receiving locking flanges located on the receiving plate. To remove the cover assembly from the receiving plate, it is necessary to simultaneously depress each locking flange. Flange-releasing means are positioned on the cover assembly in a manner that renders small children incapable of reaching and depressing all the flanges simultaneously.

Abstract: An apparatus and method for high speed transmission of data over a transmission line/medium/network telephone, wherein this high speed is achieved by simultaneously, or in a timed and marked relationship, transmitting multiple bits of data over parallel frequencies rather than serially transmitting one bit of data at a time over one frequency.