Abstract: An adjustable meat press for two-sided cooking of food products is disclosed, characterized by a movable cooking device having a planar heated cooking surface which is connected with a grill having a fixed heated cooking surface for pivotal movement between open and closed positions. The movable cooking device includes a plurality of incrementally adjustable cams having a camming surface which protrudes beyond the cooking surface of the movable device to space the movable cooking surface from the grill cooking surface by a selected distance. Owing to the provision of a plurality of cams, the movable cooking surface is accurately maintained parallel to the grill cooking surface when the movable device is in its closed position to uniformly press and cook one or more food products arranged therebetween. A unique spring and slide mechanism controls the movement of the movable cooking device relative to the grill between the open and closed positions.

Abstract: A gas damper for regulating the mass flow of a stream of purging air as it is directed into an electrostatic precipitator including a generally cylindrical housing having a floating piston positioned in metering relationship to the discharge outlet of the housing by the buoyant force of the air flowing through the housing.