Abstract: The present invention contemplates water-bearing silicate materials achieved by modifying the basic method of essentially reacting water glass with calcium chloride to bind the free water into solid form without adversely affecting the basic chemical and physical structure of the original product. The material is then dried by using a wicking agent, such as cellulose sponge, adding an anhydrous salt to the material to form a crystalline hydrate, or adding calcium oxide or calcium hydroxide to the material to form a microstructure that physically retains the water. The material is then incorporated into a fire protection contained in which the material forms the outermost wall of the container, a light-weight porous material such as urethane foam and intermediate layer, and a phase change material with a melting point of about 70 degrees F. to 125 degrees F. forms the innermost wall.

Abstract: An electronic lock and money control system is provided that is capable of single unit stand-alone operation, as well as expandability to a network of multiple units having one of the units operate as a centralized network controller. The network includes at least one safe provided with a control system arranged to communicate with a data input device, electronic display, connector interface and electronic lock mechanism located on the safe. The control system includes a processor programmed to control operation of the electronic lock mechanism, as well as operate as a central system controller when connected to at least one other remote safe via the connector interface to monitor and accumulate financial and operational information for each remote unit. Thus, the safe can be used in stand-alone operation, or as a central control and reporting unit for a network of interconnected safes.

Abstract: The present invention contemplates water-bearing silicate materials achieved by modifying the basic method of essentially reacting water glass with calcium chloride to bind the free water into solid form without adversely affecting the basic chemical and physical structure of the original product. The material is then dried by using a physical wicking agent, such as a cellulose sponge, adding an anhydrous salt to the material to form a crystalline hydrate, or adding calcium oxide or calcium hydroxide to the material to form a microstructure that physically retains the water. The material is then incorporated into a fire protection container in which the material forms the outermost wall of the container, a light-weight porous material such as urethane foam an intermediate layer, and a phase change material with a melting point of around 70 degrees F. to 125 degrees F. forms the innermost wall.

Abstract: Fire and heat protective containers having two matable portions, the outer walls of which are formed as hollow shells filled with a ceramic gel material containing at least water glass and a polyvalent metal salt, preferably calcium chloride. For ensuring that stored articles are not exposed to temperatures greater than 125 degrees F., a layer of low-density, expended or foamed plastic insulation and a layer of phase change material are provided within the gel layer. A preferred phase change material is a mixture of water glass and a hydrated salt, preferably sodium phosphate, having a melting point around 120 degrees F. and a heat of fusion of at least 250 joules per gram. The phase change material is also contained in hollow shells, the walls of both the outer and inner shells being molded plastic parts.

Abstract: Fire and heat protective containers having two matable portions, the outer walls of which are formed as hollow shells filled with a ceramic gel material containing at least water glass and a polyvalent metal salt, preferably calcium chloride. For ensuring that stored articles are not exposed to temperatures greater than 125 degrees F., a layer of low-density, expended or foamed plastic insulation and a layer of phase change material are provided within the gel layer. A preferred phase change material is a mixture of water glass and a hydrated salt, preferably sodium phosphate, having a melting point around 120 degrees F. and a heat of fusion of at least 250 joules per gram. The phase change material is also contained in hollow shells, the walls of both the outer and inner shells being molded plastic parts.

Abstract: A multi-drawer cabinet having a cabinet housing and a plurality of drawers disposed one above the other in the housing and a slide mechanism slidably mounting each of the drawers in the housing for slidable movement between an open position extending outwardly from the housing and a closed position received entirely within the housing includes a drawer lock-out mechanism which binds the slide mechanisms of the closed drawers against slidable movement preventing a closed drawer from being opened when any of the other drawers is open.

Abstract: A door lock, particularly well suited for use with a safe which includes a movable door latch mechanism having a lock bolt abutment surface. The door lock comprises a casing having a locking bolt-receiving aperture in one of its walls. The casing is to be mounted to the door, for example, on the inside surface of the door with the bolt-receiving aperture adjacent the bolt-abutment surface of the door latch mechanism. A locking bolt is longitudinally slidably mounted with the casing for movement at an acute angle relative to the bolt abutment surface of the door latch mechanism between a locked position projecting through the aperture in the casing and into abutment with the abutment surface of the door latch mechanism and an unlocked position out of abutment with the abutment surface of the door latch mechanism and retracted into the casing.