Abstract: A protective cover for drains and other holes is provided which prevents spills and unwanted liquids from flowing therein. The protective cover includes a durable backing layer and a pliable, tacky sealing layer adjacent a portion of the durable backing layer which conforms and adheres to a surface surrounding the drain to reduce or eliminate the flow of liquids into the drain. The pliable, tacky sealing layer can have a periphery inside the periphery of the durable backing layer.

Abstract: An apparatus for bathtub heater control configured for two distinct functional operations; i.e., nominal control and safety oversight. The nominal control portion of the apparatus responds to normal operating parameters to heat the bathtub water to the desired temperature and to maintain it there within defined limits of precision. One aspect of this portion of the apparatus is proportionate temperature control. This feature employs heater power at less than full to achieve a fine degree of control at or near the desired temperature. Moreover, once the desired temperature is achieved, proportionate power of the heating element permits the maintenance of the water temperature at a more precise level. The safety oversight portion has the feature of operating only when power is applied to the heating element. This feature avoids unnecessary deactivation of the heater or heating element due to false sensing of an unsafe condition.

Abstract: A protective cover for drains and other holes is provided which prevents spills and unwanted liquids from flowing therein. The protective cover includes a sheet of flexible, liquid impermeable material having top and bottom surfaces. A pliable, liquid impermeable material is attached to the bottom surface of the sheet around a peripheral edge of the sheet. The pliable, liquid impermeable material includes an exposed surface that is tacky so that it ahderes to a surface surrounding the drain or other hole to prevent the flow of liquid therebetween.