摘要:
A device for aiding and encouraging a child to brush his or her teeth regularly. The device is provided with a pair of nonrotatable shafts each of which mounts seven rotatable blocks shaped like a molar tooth, each block representing either the morning or night of a particularly day during which a child should brush his teeth. The front surface faces of the blocks form a frowning mouth with dirty teeth, while the rear surface faces form a pattern of a smiling mouth with white teeth after all of the blocks have been rotated 180 degrees. Each block is rotated to expose a portion of the smile and to remove a portion of the frown after each tooth brushing in the morning and evening of each day.
摘要:
An end clip for attachment to the ends of finite strips of mesh-clad RFI/EMI shielding strips. A clip attachment is formed of a thin strip of metal, such as stainless steel, with hook-like flanges at opposite ends for securement to the edge margins of a mounting strip member of U-shaped cross section. The clip passes over the top of and partially compresses the end extremity of a tubular mesh-clad core strip mounted on the U-shaped strip. The end clip not only improves the appearance of the shielding strip end, but prevents possible snagging of the exposed tube end during use. A pointed tab, pressed out of the clip material, penetrates the core strip and resists accidental removal of the clip.
摘要:
An electromagnetic interference (EMI) shielding gasket for use with removable and hinged panels of enclosures of electronic equipment, where it is necessary to limit the escape or entrance of electromagnetic radiation through a gap between the panel and enclosure. The gasket includes an elongated metal strip having a clip for easy attachment to the panel or enclosure. The strip carries flexible, electrically conductive sheet material that provides the shield. The sheet material is attached to the strip in a manner to provide a cavity therebetween along their length. A free floating elongated magnet is positioned within the cavity so that it urges the conductive sheet material against an edge of a mating piece of the enclosure by magnetic attraction. The structure conforms to surfaces with significant variations, thereby providing an effective shield, and also assists in maintaining the panel closed against the enclosure.