Abstract: A method and apparatus for controlling the growth of the solid phase of a substance from around a cooling mechanism, such as the growth of an ice pack in a water cooling system, while also minimizing chances of inaccurate control by referencing the apparent resistance of the liquid that is actually in the system rather than a standard value. The method also provides for a dead-band by monitoring the resistance of the liquid at two roughly adjacent locations.

Abstract: A drainhole strainer plug comprising a raised central grating member, a concentric recessed trickle-down member, and a plug.

Abstract: A liquid concentrate dispensing apparatus having a removable and refillable concentrate tank with sensors connected therewith flush with the inside wall of the tank to facilitate cleaning. The sensors comprise detectors which include an electrically conductive housing, one wall of the housing is substantially flush with the inside wall of the tank. Spring biased detent members on the outside of the tank releasably connect the detectors with the dispensing apparatus when the tank is inserted to a preselected position. The tank is provided with two such sensors, one is located in the sidewall and the other is located in the bottom wall. When the tank is inserted into the dispensing apparatus, the spring biased detent members engage contacts on the apparatus. A current passes between the detectors on the sidewall and bottom wall when both are covered by liquid concentrate.

Abstract: This invention relates to a metal clad window product. The window frame and sash are basically made of milled, elongated wooden members with suitable interconnecting parts, such as mortises and tenons, at the ends of the same. A metal cladding member is attached to each elongated member before assembly of the window parts. The metal cladding member has flanges formed integral therewith which fit into rabbets in the sides of the elongated wooden members forming the frame and sash parts to secure the cladding to the part. The cladding includes an extension at one edge thereof which forms with suitable stop members in the assembled sash, a mounting for a glazing panel assembly. In the case of the window frame, the extension forms the mounting of the weather seal for sealing the sash to the window frame.