Abstract: A memory array includes a storage unit with a number of sections and decoders coupled to respective ones of the sections for decoding an N-bit address signal and responsively asserting a signal on one of the word lines selected by the address signal. Local clock buffers are coupled to respective ones of the decoders for receiving a clock signal and an address signal including M most-significant bits of the N-bit address signal and generating respective timing signals. The decoders receive the timing signal from their respective local clock buffers. Each decoder is operable to alternately precharge and evaluate the N-bit address signal responsive to phases of the timing signal. Each local clock buffer is operable, responsive to a state of the M bits of the address signal, for selecting between holding its timing signal in a deasserted state and enabling its timing signal to follow the clock signal.

Abstract: An air filter support system for a clean room has a number of filter support elements (10) supported by holding rods (12) secured to a supporting surface. A connector/hanger bracket (14) having a pair of perpendicular arms (20, 22) with apertures (24, 26,28) formed therein is secured to each holding rod. Grid members (16, 18) are laterally secured to the perpendicular arms by securing elements (38, 62, 64) passing through openings (40, 66, 68). Each of the grid members include sealing gaskets (34, 36, 70, 72) on top surfaces thereof to seal between grid members and filter elements. Aerodynamically shaped light fixtures (42, 52) are secured to lower portions of the grid members (16) to provide non-turbulent air flow into the clean room, while grid members (18) are aerodynamically shaped to provide non-turbulent air flow into the clean room.

Abstract: An air filter support system for a clean room is comprised of a number of filter support elements (10) supported by holding rods (12) secured to a supporting surface. A connector/hanger bracket (14) having a pair of perpendicular arms (20, 22) with apertures (24, 26, 28) formed therein is secured to each holding rod. Supporting elements (16, 18) are laterally secured to the perpendicular arms by securing elements (38, 62, 64) passing through openings (40, 66, 68). Each of the supporting elements include sealing gaskets (34, 36, 70, 72) on top surfaces thereof to seal between supporting elements and filter elements. Aerodynamically-shaped light fixtures (42, 52) are secured to lower portions of the supporting elements (16) to provide non-turbulent air flow into the clean room, while supporting elements (18) are aerodynamically-shaped to provide non-turbulent air flow into the clean room.

Abstract: A damper for an air flow system opening, such as the air inlet of a clean room filter module, includes a number of control plates (14, 15) reciprocally mounted on holding elements (22) and a drive element (24, 36) supported from a supporting surface (20) with an airflow opening (21) therein. Gaskets (30, 31) seal around apertures (16, 18) and the airflow opening to allow more accurate and positive control and diffusion, as well as virtually complete shut off, of airflow through the opening. A tool (42) is used to rotate a threaded end (34) of the drive element rotatably held in an opening in a beam (40) by holders (38). The threaded end of the drive element cooperates with an internally threaded opening in a non-round-shaped traveler (36) passing through matching non-round openings in the control plates.

Abstract: An air filter system for a clean room has a number of filter modules (16) secured together at intersecting corners by holding rods (12) secured to a supporting surface, and at least one support bracket (14, 14′, 14″) on each holding rod. The filter modules include top panels (18, 18′), that, if separable, are secured to upper supporting brackets and a filter element (19) having a rigid frame (21) and filter panels (27) held therein secured to lower brackets. Light fixtures (38) may be secured to center divider (40) held in the filter frames and diffuser panels (50) or aerodynamically-shaped elements (60) may be secured to the support brackets, below the filter elements.

Abstract: A damper for an air flow system opening, such as the air inlet of a clean room filter module, includes a number of control plates (14, 15) reciprocally mounted on holding elements (22) and a drive element (24, 36) supported from a supporting surface (20) with an airflow opening (21) therein. Gaskets (30, 31) seal around apertures (16, 18) and the airflow opening to allow more accurate and positive control and diffusion, as well as virtually complete shut off, of airflow through the opening. A tool (42) is used to rotate a threaded end (34) of the drive element rotatably held in an opening in a beam (40) by holders (38). The threaded end of the drive element cooperates with an internally threaded opening in a non-round-shaped traveler (36) passing through matching non-round openings in the control plates.

Abstract: An air filter system for a clean room is comprised of a number of filter modules (16) secured together at intersecting corners by holding rods (12) secured to a supporting surface, and at least one support bracket (14, 14′, 14″) on each holding rod. The filter modules include top panels (18, 18′), that, if separable, are secured to upper supporting brackets and a filter element (19), having a rigid frame (21) and filter panels (27) held therein secured to lower brackets. Light fixtures (38) may be secured to center divider (40) held in the filter frames and diffuser panels (50) or aerodynamically-shaped elements (60) may be secured to the support brackets, below the filter elements.