Abstract: An ink jet printing apparatus is provided comprising a print cartridge including a heater chip and a nozzle plate coupled to the heater chip. The heater chip has first, second, third and fourth heating elements, and the nozzle plate has a plurality of primary and secondary nozzles. The primary nozzles include first and second nozzles positioned in first and second nozzle plate columns and the secondary nozzles include third and fourth nozzles positioned in third and fourth nozzle plate columns. Each of the nozzles has one of the heating elements associated therewith for generating energy to discharge ink therefrom. The apparatus further includes a driver circuit, electrically coupled to the print cartridge, for applying firing pulses to the heating elements.

Abstract: An ink jet printing apparatus is provided comprising a print cartridge including a heater chip and a nozzle plate coupled to the heater chip. The heater chip has first, second, third and fourth heating elements, and the nozzle plate has a plurality of primary and secondary nozzles. The primary nozzles include first and second nozzles positioned in first and second nozzle plate columns and the secondary nozzles include third and fourth nozzles positioned in third and fourth nozzle plate columns. Each of the nozzles has one of the heating elements associated therewith for generating energy to discharge ink therefrom. The apparatus further includes a driver circuit, electrically coupled to the print cartridge, for applying firing pulses to the heating elements. The printing apparatus is selectively operable in one of a normal mode of operation and a high speed mode of operation.

Abstract: The subject of the invention is a transparent substrate (1), in particular a glass substrate, including a coating (6) of one or more thin films on at least one of its faces, comprising at least one A film containing an aluminum fluoride or aluminum oxyfluoride Al.sub.x O.sub.y F.sub.z, with y.gtoreq.0.

Abstract: The invention relates to a glass substrate having on at least one of its faces an antireflection coating formed by a stack of thin dielectric material layers having alternately high and low refractive indices. To prevent the modification of the optical properties of the coating in the case where the substrate is subject to a heat treatment such as tempering, bending or annealing, the layer or layers of the stack which are liable to deteriorate on contact with alkali ions such as sodium ions are separated form the substrate by at least one layer forming part of the antireflection coating and forming a "shield" with respect to the diffusion of alkali.

Abstract: A particle getter is presented for protecting electronic circuitry from damage caused by particles or debris. An adhesive film is used to capture and retain particles, such as solder balls and wire trimmings, that pose a danger to the functioning of electronic circuitry, and thereby prevent short circuits and other malfunctions. The particle getter does not interfere with access to the circuitry, and thus may be used when conformal coating is not practicable. The particle getter is particularly useful for protecting electronic circuitry aboard a spacecraft, since particles that can cause a circuit malfunction float freely in the zero-gravity environment, where they can be captured and retained by the getter. The preferred adhesive film is space-qualified, and has outgassing properties that are within limits imposed by NASA specifications. The particle getter has applications in many places where debris is present, both in space and earthbound.

Abstract: An increased resolution thermal ink jet printhead construction and method for forming large array heater chips for thermal ink jet printheads is achieved by fabricating a unitary "megachip" in which multiple cells of electrical components are defined in a plurality of columnar patterns in a plane of a silicon wafer. Cells of a first column are vertically offset from cells of an adjacent column so as to overlap the gap between cells in the first column. The megachip is then formed by grouping at least one cell from each of two adjacent columns and dicing the wafer to remove the megachip.

Abstract: A thin film for covering a clear or colored glass sheet to form a monolithic automobile glazing. The film is based upon metallic tantalum. It may be covered with a layer based upon oxides of various metals. The solar energy transmission and also the reflection of light through the glazing are low, whereas the reflectance is similar to that of the base glass.

Abstract: Steam quality at both outlets of an impact T-Junction is equalized by a static mixer having corrugated lamella plates immediately adjacent the inlet leg to the junction causing substantial homogenization of the liquid and vapor phases of wet steam entering the junction so that the steam exiting both outlet legs of the junction will have substantially the same quality as the steam entering the junction.

Abstract: A door construction is provided for a refrigeration appliance where the door has an exterior shell with a certain degree of rigidity, an interior liner spaced from the exterior shell and being less rigid than the shell, a foamed insulation material disposed between the exterior shell and the interior liner and a reinforcement sheet having a rigidly greater than the liner located between the exterior shell and the liner. The reinforcement sheet may either be retained and placed by the foamed insulation material or by an adhesive layer between the sheet and the liner. Preferably the liner has a planar surface and the sheet has a planar surface in engagement with the planar surface of the liner. The sheet may be non-perforated or perforated and be made of a metallic material.

Abstract: A previously fabricated flat flexible cable (10) includes tears and/or micro-fissures, micro-cuts or other defects or imperfections, depicted by jagged or wavy lines (16), in its edges (18). A multi-fiber tread (20), placed at the cable's edges, is enclosed within, between and/or atop one or more layers of adhesive film (22). A bond material (26) bonds the film layers to themselves at their ends (28), to the cable respectively at its sides (24), and to the thread. The bond material is also bonded to and within the micro-fissures, micro-cuts or other defects for repair thereof. The bond material also bonds thread (20) to portions of the cable adjacent to the tear to prevent further propagation of the tear into the cable.

Abstract: In this invention an all electronic circuit for moving and stopping an object is disclosed. The object is responsive to movement from a drive signal. The object is moved from a first position to a final position and is stopped without physical damping or substantial ringing and the like. The circuit provides for the generation of a first signal which moves the object from the first position to an intermediate position, which is between the first position and the final position. A second signal is generated where the second signal is a time delay signal of the first signal. The first and second signals are combined to produce the drive signal.

Abstract: An animal restraining device for use on a vehicle cargo bed including a track member and a slider piece fitting within a slot in the track member is disclosed. A leash is connected to the slider member. The track is placed along and within a channel formed in the cargo bed such that an animal leashed to the slider member may roam the cargo bed but is restrained for leaving the cargo bed.

Abstract: A frozen urethane premix coating material is prepared by mixing together an isocyanate, a hydroxy terminated aliphatic polyol, and an organic solvent in an amount of at least 75 percent by weight of the total weight of the premix, and then freezing the mixture. The storage life of the mixture is several months, after which it is thawed and used as a coating material. In one form, the premix includes 4,4'-diphenyl methane diisocyanate as the isocyanate and a mixture of toluene and methyl ethyl ketone as the solvent.

Abstract: A rudder-steerable water ski is provided including a pivotable shoe rotatable by the user to correspondingly move a ski rudder through a transmission mechanism. A V-shaped rudder may be used with at least one blade of the rudder remaining in the water when the ski is angled with respect to the surface of the water. According to the method of the present invention, the conventional water ski may be modified to provide the rudder-steerable capability of the invention.

Abstract: A soldering flux, method for fluxing pieces, and method for joining pieces, wherein hydrofluoric acid or an evaporative organic acid is mixed with an evaporative organic solvent to form the flux. Neither precleaning nor postcleaning of the pieces being joined is necessary. The flux evaporates completely upon heating, leaving no corrosive residue or other product on the surface of the piece. The portion of the piece to be bonded is dipped into the flux and immediately tinned, before soldering.

Abstract: A foam-encapsulated electronic assembly particularly suitable for reworking and repair operations, wherein some of the electronic subassemblies must be removed without damaging them, including a plurality of electronic subassemblies removably inserted into a frame, a release agent interposed between the subassemblies and the frame, and subassembly extraction means attached to the subassemblies prior to encapsulation. Preferably, each subassembly has structural holes such as alignment holes, and a loop of flexible line can be secured through the structural holes and encapsulated within the foam, with a part of the line positioned near or at the surface of the foam so that the line may be located when extraction is desired. The release agent can be a tape or film which prevents the foam from bonding the subassembly to the frame. The assembly also preferably includes foam cutting means between laterally adjacent subassemblies.

Abstract: A switching mechanism for use in a transit system employing vehicles (10) traveling on a guideway (12), the switching mechanism includes forward and rearward switching subassemblies each having upper (32) and lower (36) switch arms. The upper switch arms include switching wheels (34) which selectively engage switch channels (42) positioned on opposite sides of the guideway to cause the vehicle to follow a selected path on the guideway (12). A stabilizer mechanism (90) for biasing the switch arms into operating position is provided.

Abstract: A vehicle supporting guideway is presented, the guideway is comprised of upper horizontal stringers, lower horizontal stringers vertically oriented diagonal members affixed to the upper and lower horizontal stringers and horizontally oriented diagonal members are affixed between the lower horizontal stringers. These features present a guideway having an upwardly extending U-shape construction which can be supplied with wheel supporting channels, and upper support channels. The entire structure is reinforced by ribs which are generally within the horizontal stringers, and the entire guideway may be enclosed by a cover. Overlapping members join adjacent sections of the horizontal stringers together.

Abstract: The guideway is comprised of upper horizontal stringers (20, 22), lower horizontal stringers (24, 26) vertically oriented diagonal members (30, 32) affixed to the upper and lower horizontal stringers (20, 22 and 24, 26) and horizontally oriented diagonal members (34) are affixed between the lower horizontal stringers (24, 26). These features present a guideway having an upwardly extending U-shape construction which can be supplied with wheel supporting channels (28), upper support channels (35) and the entire structure can be reinforced by ribs (60) and enclosed by a cover (50). The ribs include spaced inner and outer members with joined free ends.

Abstract: A component assembly (11) and a tape (21) therefor provide for the nondestructive debonding of components (13, 15) bonded by adhesive (17). A thread or woof (19) meanders through the adhesive. When at least one end (27) of the woof is pulled, the adhesive is destroyed so that the components may be separated without component damage. The meandering thread may be a woof woven through multiple filaments (25) to form the tape.