Abstract: A vacuum cleaner having a cleaning head engagable with a floor and a first suction nozzle and a brush roller mounted therein; a housing connected to the cleaning head, the housing having a dirt storage container and a first passageway leading from the cleaning head to the storage container; a cleaning hose having an at least partially flexible second passageway in communication with the first passageway and having a second suction nozzle at one end; a suction motor mounted in the housing and operatively associated with the storage container for drawing dirt laden air from the cleaning head through the first passageway and from the hose through the second passageway, into the storage container; a flow control valve having a generally cylindrical body mounted for rotation in the housing with one end of the cylindrical body having an opening in constant communication with the suction motor, a first opening in a side portion of the cylindrical body which can be brought into and out of alignment with the first pas

Abstract: A dry etcher includes a process chamber configured to process a substrate therein using plasma; a substrate supporter to support the substrate; an inner chamber wall maintained at a high temperature and at least one magnetron provided in close proximity to the substrate to generate a local uniform high density plasma. The outer chamber wall provides vacuum integrity and is kept at low enough temperature to maintain vacuum integrity and to ensure safe operation of the machine. The dry etcher further includes a radio-frequency (RF) power source coupled to the substrate supporter, wherein the plasma is generated by the RF power applied to the substrate supporter and a magnetic field generated by the magnetron.

Abstract: A shelving unit comprises a shelf and a shelf anchor for securing the shelf to an adjacent wall. The shelf has a peripheral rim that extends along at least a portion of the length of the shelf. The shelf has at least one internal lateral support member extending generally perpendicularly to the rim. The shelf anchor includes a base and a shelf-retainer. The base is adapted to be mounted to the wall. The shelf-retainer extends from the base. A retaining portion of the shelf-retainer is spaced from a front side of the base to define a rim-receiving recess between the base and the retaining portion of the shelf-retainer. The shelf anchor is positioned relative to the shelf so that at least a portion of the peripheral rim is received within the rim-receiving recess in a manner to prevent the shelf from moving outwardly from the wall when the shelf anchor is mounted to the wall. The shelf-retainer includes a lateral positioner.

Abstract: A shelving unit comprises a shelf and a shelf anchor for securing the shelf to an adjacent wall. The shelf has a generally vertical peripheral rim. The shelf anchor includes a base and a shelf retainer. The base has opposite front and rear sides. The rear side of the base has a wall-engaging portion adapted for flush engagement with the wall. The shelf retainer has a bridge portion and a shelf-retaining portion. The bridge portion extends outwardly from the front side of the base. The shelf-retaining portion extends generally vertically from a distal end of the bridge portion. The shelf-retaining portion is spaced from the front side of the base to define a rim-receiving recess between the front side of the base and the shelf-retaining portion. The shelf retainer is positioned relative to the shelf so that at least a portion of the peripheral rim is received within the rim-receiving recess.

Abstract: A shelving unit comprises a shelf and a shelf anchor for securing the shelf to an adjacent wall. The shelf has a peripheral rim that extends along at least a portion of the length of the shelf. The shelf has at least one internal lateral support member extending generally perpendicularly to the rim. The shelf anchor includes a base and a shelf-retainer. The base is adapted to be mounted to the wall. The shelf-retainer extends from the base. A retaining portion of the shelf-retainer is spaced from a front side of the base to define a rim-receiving recess between the base and the retaining portion of the shelf-retainer. The shelf anchor is positioned relative to the shelf so that at least a portion of the peripheral rim is received within the rim-receiving recess in a manner to prevent the shelf from moving outwardly from the wall when the shelf anchor is mounted to the wall. The shelf-retainer includes a lateral positioner.

Abstract: A programmable cell for use in programmable electronic arrays such as PROM devices, logic arrays, gate arrays and die interconnect arrays. The cells have a highly non-conductive state settable and substantially non-resettable into a highly conductive state. The cells have a resistance of 10,000 ohms or more in the non-conductive state which are settable into the conductive state by a threshold voltage of 20 volts or less, a current of 25 milliamps or less, for 1000 microseconds or less. The cells in the conductive state have a resistance of 500 ohms or less. The cells have a maximum permittable processing temperature of 200.degree. centigrade or more and a storage temperature of 175.degree. centigrade or more. The cells can be formed from chalcogenide elements, such as germanium tellurium and selenium or combination thereof. The cells also can be formed from tetrahedral elements, such as silicon, germanium and carbon or combinations thereof.