Abstract: A seal apparatus is disclosed for sealing dampening solution which is disposed within a reservoir extending from a nip defined between a form roller and a metering roller of a lithographic printing machine. The apparatus includes a source of pressurized air and device for directing a flow of air from the source of pressurized air towards an edge of the reservoir and between the form and metering rollers such that the flow of air generates an air dam for sealing the reservoir so that leakage of the dampening solution from the edge of the reservoir is inhibited.

Abstract: An arrangement for passing an electrical signal between first and second areas includes a body disposable between the first and second areas and having an aperture. A first sleeve is at least partially disposed in the aperture and defines a first opening. A second sleeve is also at least partially disposed in the aperture and defines a second opening. The arrangement further includes an electrically conductive element having a first portion disposed in the first opening, and a second portion disposed in the second opening.

Abstract: A filter arrangement for use with a vessel containing pressurized fluid includes a body engageable with the vessel. The arrangement further includes a coalescing filter assembly supported by the body such that the filter assembly is disposable inside the vessel when the body is engaged with the vessel. In one embodiment of the filter arrangement, the coalescing filter assembly includes a housing having a cavity, a coalescing filter disposed in the cavity for removing entrained liquid from the fluid, and a drain device in fluid communication with the cavity for draining the liquid removed by the coalescing filter from the cavity into the vessel.

Abstract: A filter arrangement for use with a vessel that receives fluid includes a body engageable with the vessel. The body has an inlet port, an outlet port, a body cavity, a first fluid path disposed between the inlet port and body cavity, and a second fluid path disposed between the body cavity and the outlet port. A filter is disposed at least partially in the body cavity, and includes a filter cavity and filter media for filtering the fluid. A valve is associated with the body for allowing the fluid to flow into and out of the vessel. When the fluid flows into the vessel, the fluid flows through the filter cavity and along the first fluid path without flowing through the filter media. When the fluid flows out of the vessel, the fluid flows along the first fluid path, through the filter media and along the second fluid path.

Abstract: An arrangement is provided for passing an electrical signal between a first area having a first pressure, and a second area having a second pressure, wherein the first pressure is normally greater than the second pressure. The arrangement includes a body disposable between the first and second areas. The body has a first surface disposable adjacent the first area, and an aperture extending from the first surface. A sleeve is non-threadingly engaged with the body and defines a passage. The sleeve further has a first portion disposed adjacent the first surface, and a second portion disposed in the aperture. The arrangement further includes an electrically conductive element disposed at least partially in the passage. When the sleeve is exposed to the first pressure, the first portion is urged toward the first surface of the body.

Abstract: An arrangement for passing an electrical signal between first and second areas includes a body disposable between the first and second areas and having an aperture. A first sleeve is at least partially disposed in the aperture and defines a first opening. A second sleeve is also at least partially disposed in the aperture and defines a second opening. The arrangement further includes an electrically conductive element having a first portion disposed in the first opening, and a second portion disposed in the second opening.

Abstract: A filter arrangement for use with a vessel containing pressurized fluid includes a body engageable with the vessel. The arrangement further includes a coalescing filter assembly supported by the body such that the filter assembly is disposable inside the vessel when the body is engaged with the vessel. In one embodiment of the filter arrangement, the coalescing filter assembly includes a housing having a cavity, a coalescing filter disposed in the cavity for removing entrained liquid from the fluid, and a drain device in fluid communication with the cavity for draining the liquid removed by the coalescing filter from the cavity into the vessel.

Abstract: An arrangement is provided for passing an electrical signal between a first area having a first pressure, and a second area having a second pressure, wherein the first pressure is normally greater than the second pressure. The arrangement includes a body disposable between the first and second areas. The body has a first surface disposable adjacent the first area, and an aperture extending from the first surface. A sleeve is non-threadingly engaged with the body and defines a passage. The sleeve further has a first portion disposed adjacent the first surface, and a second portion disposed in the aperture. The arrangement further includes an electrically conductive element disposed at least partially in the passage. When the sleeve is exposed to the first pressure, the first portion is urged toward the first surface of the body.

Abstract: A seal apparatus is disclosed for sealing dampening solution which is disposed within a reservoir extending from a nip defined between a form roller and a metering roller of a lithographic printing machine. The apparatus includes a source of pressurized air and device for directing a flow of air from the source of pressurized air towards an edge of the reservoir and between the form and metering rollers such that the flow of air generates an air dam for sealing the reservoir so that leakage of the dampening solution from the edge of the reservoir is inhibited.

Abstract: A regulator for regulating outlet pressure of a fluid supplied to the regulator from a fluid source includes a body having an inlet, and a pressure regulating chamber disposed in the body. A high pressure fluid circuit extends between the inlet and the pressure regulating chamber for transmitting the fluid from the inlet to the pressure regulating chamber. The high pressure fluid circuit includes at least two longitudinally extending high pressure passages in fluid communication with each other. One longitudinally extending high pressure passage transmits the fluid in a first direction, and another longitudinally extending high pressure passage transmits the fluid in a second direction different than the first direction.

Abstract: A filter arrangement for use with a vessel that receives fluid includes a body engageable with the vessel. The body has an inlet port, an outlet port, a body cavity, a first fluid path disposed between the inlet port and body cavity, and a second fluid path disposed between the body cavity and the outlet port. A filter is disposed at least partially in the body cavity, and includes a filter cavity and filter media for filtering the fluid. A valve is associated with the body for allowing the fluid to flow into and out of the vessel. When the fluid flows into the vessel, the fluid flows through the filter cavity and along the first fluid path without flowing through the filter media. When the fluid flows out of the vessel, the fluid flows along the first fluid path, through the filter media and along the second fluid path.

Abstract: A field emission display (100, 200, 300) and a method of making the same are disclosed. The field emission display (100, 200, 300) includes an anode (110, 210, 310) having a plurality of cathodoluminescent deposits (120, 220, 320), a back plate (185, 285, 385) including a cathode (130, 230, 330) having a plurality of field emitters (140, 240, 340) and being affixed to a cathode reinforcement member (170, 270, 370), and a plurality of side members (150, 250, 350) disposed between the anode (110, 210, 310) and the cathode (130, 230,330) and hermetically affixed thereto. The thicknesses of the anode (110, 210, 310) and the back plate (185, 285, 385) are sufficient to provide the structural support necessary to maintain the mechanical integrity of the field emission display (100, 200, 300).

Abstract: An array of thin film piezoelectric resonators are formed on a substrate and connected in parallel to form a single piezoelectric resonator with enhanced piezoelectric coupling. The array includes a first conductive layer positioned on the substrate and defining a first electrode, a plurality of columns of piezoelectric material positioned on the conductive layer and each defining a separate piezoelectric resonator, and a second conductive layer positioned on the plurality of columns and defining a second electrode. The columns are selectively deposited or deposited as a single layer and etched into columns.

Abstract: A display (10) utilizes a drive scheme that minimizes power dissipation by reducing the operating frequency at which columns (12) operate. The operating frequency is reduced by positioning column timing signals (32) near an end of a horizontal display time (38,39,48,49) if the next horizontal display time also has data to be displayed.

Abstract: A conductor array (100), for addressing a plurality of field emitters (130), including a plurality of cathode conductors (106, 108, 110) having conductive cathode connectors (126), a plurality of gate conductors (104) having a plurality of conductive gate connectors (116, 118, 120), and a plurality of fusible links (134, 138), which are located at a plurality of overlapping regions (103) of the cathode conductors (106, 108, 110) and the gate conductors (104) and which can be electrically severed to isolate electrical shorts existing at the overlapping regions (103).

Abstract: A display (10) includes an electron source having a row conductor (17) that utilizes a plurality of longitudinal elements (26, 28). Each longitudinal element (26, 28) has extraction section (19, 23) that extends from the longitudinal element toward an adjacent longitudinal element. The longitudinal elements (26, 28) are electrically connected by a plurality of transverse connectors (29, 38, 39). When a short occurs between the row (17) and an underlying column (12, 36), the shorted portion can be electrically isolated so that the remainder of the row remains functional.

Abstract: A field emission device (10) has a gate (17) including an opening (22) for the communication of electrons from an emitter (14) to an anode (16). A resistive layer (18) is disposed at least on the inner surface (23) of the gate (17) surrounding the opening (22). The field emission device (10) may further include an insulating, dielectric layer (19). The resistive layer (18) and the dielectric layer (19) reduce arcing between the emitter (14) and the gate (17) in the field emission device (10).

Abstract: A digital video word (14) that is utilized to specify an image to be displayed by a field emission device is divided into a plurality of digital subwords (16, 17). Each digital subword (16, 17) is utilized to create a control signal (21, 22) that is applied to an input (23, 26, 32, 33) of a drive source (24, 27, 31). The digital subwords (16, 17) divide the control signals (21, 22) into time slots wherein each time slot has a duration that is greater than the duration of time slots represented by the original digital video word (14). In response to the control signals (21, 22) the drive source (24, 27, 31) provides a drive signal (28, 34) that has an output value and duration that is controlled by the duration of the control signals, and by an active and inactive state encoded by the control signals.