Abstract: A refrigerator is provided which includes at least one separate, thermally well-insulated and cooled compartment. A drain pipe is provided in the compartment to drain condensation water which forms when a heated food storage container cools in the compartment.

Abstract: An overhead projector is provided which eliminates disturbing light on a projection screen (12) from parts of a picture plate (2) of the projector which surround a projected document (10) as well as light on the screen (12) which arises when documents are being changed on the picture plate (2). The picture plate (2) is covered with a first polarizing layer (3) which is a supporting surface for the document, by placing a second polarizing layer (9) in the path of the light close to a projector head (6, 7) and by arranging the polarization directions of the first and second polarizing layers (3, 9) perpendicular to each other so that light which first passes the first polarizing layer (3) where no document is placed and thereafter passes the second polarizing layer (9) is absorbed.

Abstract: The invention relates to a refrigerator, which according to the invention contains at least one separate, thermally well-insulated and cooled compartment (5) with a drain pipe (10) for draining from the compartment (5) condensation-water formed during the cooling down of a hot receptacle (11) placed in the compartment (5).

Abstract: The invention relates to an overhead projector in which all disturbing light on the projection screen (12) from the parts of the picture plate (2) of the projector which surround the projected document (10) and the light on the screen which arises when documents are being changed on the picture plate has been eliminated. According to the invention, this has been attained by covering the picture plate (2) with a first polarising layer (3) which is a supporting surface for the document, by placing a second polarising layer (9) in the path of the light close to the projector head (6, 7) and by arranging the polarising directions of these polarising layers (3, 9) perpendicular to each other so that all light which first passes the first polarising layer where no document is placed and thereafter passes the second polarising layer (9) is absorbed.

Abstract: A paper napkin or similar sheet formed object which is intended to be attached to an article of clothing to protect it from spillage, comprises a sheet with reinforcement areas on surface portions thereof. The napkin sheet is folded before usage such that adhesive surfaces (3) on the reinforcement areas (1) are in close contact with adhesive or non-adhesive parts of the reinforcement areas which parts in this position form a protection for the adhesive surfaces (3) of the sheet.