Abstract: A fire-resistant container for use as a safe, formed of steel and lined on its inner surface with a composition comprising insulative and intumescent materials, preferably mineral wool insulation and hydrated sodium silicate fiberboard, respectively. Preferably, an air space is also provided between the fire-resistant materials and the wall. A hinged door of the container is fitted with fire-resistant materials in similar fashion to the container walls, and the door's jamb is gasketed in intumescent material. Within the container, an inner wall is formed of a fire-resistant material such as gypsum board. A fire-resistant container in accordance with the invention meets Underwriters Laboratories Standard 72 and is suitable for storage of paper documents, firearms, and other valuables.

Abstract: A combination of the inventive combination lock can be easily and conveniently changed by the user. A clutch selectively disengages the drive tumbler from the lock spindle. With the drive tumbler disengaged and the tumblers in an aligned position, the user rotates the lock knob by a desired increment, thereby changing all of the numbers by the increment. In one embodiment, the clutch is operated by a cup mounted around the drive cam and engaging the drive tumbler, a spring biasing the drive tumbler against the cup and the drive cam, and the cup carrying a button that, when pressed, moves the drive tumbler out of engagement with the drive cam. In another embodiment, the clutch is operated by a thumb screw projecting through a rear panel of the combination lock that moves an upper part of the drive cam out of engagement with a lower part of the drive cam, allowing relative rotation of the lock dial and the drive tumbler.

Abstract: A door bushing system includes bushings formed as part of a molded resin door jamb in an insulated steel shell safe door. The mold for the door jamb is designed to form as many bushings as are required and can also form stubs or sleeves for mounting other safe components. The bushings can support parts of such components as combination locks, key locks, and door handles. The combination lock and the handle have spindles whose opposite ends have identical configurations to facilitate assembly. The spindles are also made from resinous material to reduce heat transmission and to allow attachment by insert molding. Because the bushings are installed automatically with the door jamb, this door bushing system eliminates the need for separate installation of bushings after assembly of the door, ensuring proper alignment and reducing costs.

Abstract: An apparatus for disinfecting contact lenses by use of microwave energy is disclosed wherein a disinfecting fluid is stored in a first chamber and transferred to a second compartment when exposed to microwave energy. The second compartment holds the lenses to be disinfected and is shielded by a microwave deflecting substance.

Abstract: Contact lens disinfecting apparatus is provided having first and second lens-holding chambers, an electrically conductive heat sink thermally coupled to said chambers, electrically energizable heater thermally and electrically coupled to the heat sink, a thermostat, a second heat sink coupled to the thermostat and a thermally and electrically conductive heat transfer member connected between the heater and the second heat sink.