Abstract: A drip-type coffee maker adapted for use in a microwave oven. The coffee maker includes a container which can dispense coffee directly into a receptacle therebelow and has an upper reservoir for holding water, a lower filter element for holding coffee grounds and a partition, which separates the reservoir and coffee filter element. The partition includes a portion thereof adapted to close and open communication between the reservoir and the filter element, and a non-toxic heat responsive sealing substance adapted to releasably seal the partition portion in the closed position until water in the reservoir reaches a temperature for brewing coffee.

Abstract: A drip-type coffee maker adapted for use in a microwave oven. The coffee maker includes a container for positioning on or above a receptacle and has two compartments, an upper reservoir for water and a lower filter element for holding fresh coffee grounds. A partition wth at least one perforation sealed with a thermally responsive non-toxic substance separates the two compartments. When the water is heated to the desired brewing temperature in the microwave oven, the thermally responsive substance melts, allowing the heated water to flow from the upper reservoir through the coffee grounds and become freshly brewed coffee. The fresh coffee thereafter flows through the filter element and into the receptacle below.

Abstract: A camera lens accessory and mounting ring construction for positioning and locking lens accessories, such as filter or aperture discs, at the front of the lens. The discs include a respective notch formed along the circumference thereof and the mounting ring has a pair of oppositely-facing lugs formed on the inner-facing circumference thereof. The discs are mountable to the end of the lens by slipping one or more selected discs under one of the lugs, lining up the notch on the discs to be in registry with the other of the lugs and slipping the discs under the latter lug. The discs are then rotated to move the notch out of registry with the lugs such that the discs are retained behind the two lugs, and the mounting ring is threadly engaged over the lens barrel to secure the discs upon the end of the lens.