Abstract: An upper end portion of an excavation ripper shank is captively and removably retained in a ripper box using a specially designed flex pin connector longitudinally driven into generally aligned openings in the ripper box and shank. The connector includes first and second rigid pin members held in a spaced apart, parallel, laterally facing relationship by a plurality of elastomeric members bonded to facing side surfaces of the pin members. When the connector is driven into the aligned box and shank openings the elastomeric members are compressed, causing the first and second pin members to drive the shank and box into forcible abutment with one another to substantially eliminate relative side-to-side play therebetween. Additionally, as the connector passes through the first and second openings its first and second pin members are caused to pivot relative to one another about an axis parallel to the compression direction of the elastomeric members.

Abstract: An aircraft armament mounting system includes an elongated support plank member which is insertable transversely through the aircraft cabin area so that a central portion of the plank is disposed within the cabin area and its opposite end portions project outwardly from the aircraft. The central plank portion is anchored to the air craft, and removable outer tip portions of the plank are vertically pivotable, about horizontal hinge lines, between extended and inwardly folded positions. When the outer plank tip portions are removed, specially designed mounting structures may be used to mount armament devices, such as machine guns, at the hinge lines at the outer ends of the remaining longitudinal plank portion. Representatively, these armament devices are .50 caliber machine guns housed in open framed pod structures having enclosed front end portions through which the jacketed barrels of the guns extend.

Abstract: A vertically elongated computer system tower unit has an internal sheet metal chassis portion having a bottom base wall to the underside of which four specially designed molded plastic stabilizing foot members are directly connected without the use of mounting screws or other separate mounting structures. Each support foot has a pair of top side retaining projections that are received in complementarily configured openings in the chassis base wall in a manner holding the foot member on the base wall and permitting the foot member to pivot between an initial installation position in which the projections may be inserted into or removed through the wall openings with the foot member underlying the base wall, a retracted position in which the foot member is pivoted outwardly from the installation position and underlies the base wall, and an extended position in which the foot member projects outwardly beyond the base wall and stabilizes the tower unit.

Abstract: An automatically controlled water spray air purification system is incorporated in a heating, ventilating and air conditioning unit serving a conditioned interior building space. The purification system is operative to receive a portion of the return air that would normally be flowed through the unit, mix the received return air with a quantity of outside ventilation air, purify the return air/outside air mixture using water sprayed from a sump portion of the purification system, and flow the purified air into the unit for mixture therein with the balance of the return air being flowed therethrough to the conditioned space. Damper structures on the unit and its associated air purification system permit selective variance of the percentage of the unit discharge air that has traversed the purification system.

Abstract: An LED indicating light assembly is mounted on the interior side of a computer housing wall, over a lens opening therein, and is operative to provide a visual confirmation that an operating component within the computer housing is activated. The assembly includes a mounting socket structure having an open front end securable to the housing wall over the lens opening, and an open rear end. An elongated lens member is longitudinally inserted forwardly into the socket structure to position a front end portion of the lens in the housing wall lens opening. As the lens is inserted into the socket structure, a transverse mounting pin portion of the lens, intermediate its front and rear ends, is latched into place by a resiliently deflectable outer side wall portion of the socket structure. An LED device positioned behind the mounted lens is used to illuminate its front end portion.

Abstract: Apparatus for determining whether the temperature of bath water is below a selected temperature. A bath mat having temperature related indicia imprinted on a top side surface thereof has a layer of temperature sensitive ink applied over the temperature related indicia. The temperature sensitive ink is selected such that it is transparent above the selected temperature and at least partially opaque below the selected temperature. When the temperature of the bath water exceeds the selected temperature, the temperature sensitive ink is transparent and, when the temperature of the bath water is below the selected temperature, the temperature sensitive ink is at least partially opaque.

Abstract: A flow meter apparatus for measuring the mass flow rate of a fluid using the Coriolis principle. A single straight flow conduit is employed which is vibrated in a radial-mode of vibration. Coriolis forces are thereby produced along the walls of the flow conduit which deform the conduit's cross-sectional shape as a function of mass flow rate. Additional embodiments are disclosed employing vibration of selected portions of the flow conduit walls. In addition, a method is described to determine the pressure and the density of a fluid by simultaneously vibrating a flow conduit in two modes of vibration and thereby determining pressure and density based on changes in each frequency.

Abstract: A computer tower unit is provided with two cooling fans, a system cooling fan and a power supply cooling fan, that draw ambient air through the unit via a pair of upper and lower exterior wall air inlet openings disposed opposite the two fans to cool a motherboard, a power supply unit, disc drives and expansion cards disposed in the unit. The need for a separate fan to cool the disc drives is eliminated by a specially designed air flow control baffle disposed within the unit. The baffle functions to cause cooling air drawn into the unit through the lower air inlet opening by the system cooling fan to be deflected toward and be drawn upwardly along the motherboard before being discharged by the fan, and also cause a portion of the air drawn into the unit through the upper inlet opening by the system cooling fan to be drawn through the disc drive mounting area within the unit to thereby cool the system disc drives without the use of a separate drive unit cooling fan.

Abstract: A length mode drop on demand type ink jet print head includes a lower body portion formed of an active piezoelectric material and an upper body formed from an inactive material. The lower body portion, which includes a plurality of longitudinally extending projections, is poled in a first direction generally orthogonal to both its longitudinal and vertical axes. The upper body portion also includes a plurality of longitudinally extending projections. The lower and upper body portions are mated such that the lower and upper body projections are spaced interdigitally with each other. By mating the lower and upper body portions in this manner, a plurality of ink-carrying channels are formed. The ink jet print head further includes a controller for selectively applying an electric field across each of the lower body projections in the poling direction.

Abstract: A forced flow of outside ventilation air may be selectively directed into the cab of a truck using a specially designed fan assembly that works in conjunction with an existing vent structure disposed within a ventilation passage extending through a wall of the cab. The existing vent structure has a control member which is manually operable from the interior of the cab to selectively permit or preclude outside air inflow to the cab interior through the ventilation passage. The fan assembly includes a housing having an open front side, and an open rear side secured to the cab wall portion over the inner side of the ventilation passage. A cover plate having a pair of air flow openings therein is secured to the front side of the housing for pivotal movement relative thereto between a closed position in which the cover plate blocks the front housing side, and an open position providing manual access to the vent structure control member through the housing interior.

Abstract: A fuel-fired, forced air draft induced heating furnace is provided with NO.sub.x reduction apparatus associated with a plurality of combustor tubes forming a portion of its heat exchanger structure. In-shot type fuel burners are spaced apart from and face the open inlet ends of horizontal combustion sections of the combustor tubes. The NO.sub.x reduction apparatus includes a plurality of metal mesh tubes having diameters substantially less than the internal diameters of the combustion tubes. The mesh tubes are coaxially supported within the combustor tubes, adjacent their inlet ends, by elongated support members longitudinally passing through the mesh tubes and having first ends anchored to the combustor tube inlet ends, and second ends slidably resting on internal side surface portions of the combustor tubes.

Abstract: An inlet water turbulator body is coaxially secured within the lower end of an inlet water supply dip tube vertically disposed with the storage tank portion of a water heater. A spaced plurality of vertically spiraling passages extend through the turbulator body and are operative, in response to discharge of hot water from the storage tank through its outlet fitting, to receive pressurized inlet water within the dip tube and discharge the received water from a the lower end of the turbulator body in a water discharge pattern that impinges upon the lower tank end wall with substantial vertically directed and horizontally swirling force components to thereby facilitate the dislodgement of sediment from the lower tank end wall.

Abstract: Disclosed is a vibration isolation module for a towed hydrophone streamer comprising: (1) a first outboard transition unit having an outboard end and an inboard end, the outboard end of the first outboard unit capable of receiving a first tension member, the first tension member terminating within the first outboard unit, the inboard end of the first outboard unit capable of receiving second and third tension members, the second tension member entering, looping back and exiting the inboard end of the first outboard unit, the third tension member terminating within the first outboard unit and (2) a first inboard transition unit having an outboard end and an inboard end, the outboard end of the first inboard unit capable of receiving the second and third tension members, the second tension member passing through the first inboard unit, the third tension member terminating within the first inboard unit, the inboard end of the first inboard unit capable of receiving a fourth tension member, the fourth tension mem

Abstract: A page wide ink jet printhead body is formed using first and second series of identically configured rectangular piezoceramic blocks having widths not greater than about one inch. The individual blocks are poled in widthwise directions and secured to one another and to an upper side surface of a nonpoled piezoceramic lower body section. Horizontally equally spaced saw cuts are then made downwardly through the first and second block series, with the block width being an even multiple of the horizontal saw cut pitch, and saw cuts extending vertically through the aligned side junctures of each block series. A top, nonpoled piezoceramic body section is then secured to the top side of the second block series, the saw cuts forming within the resulting printhead body a spaced series of parallel ink receiving channels interdigitated with a spaced series of piezoelectrically deflectable sidewall actuator sections.

Abstract: A system manager for a computer system. The system manager transparently monitors signals transferred between computer system components along a system bus and stores objects related to the monitored signals in an object space. Information related to operating conditions within the system can then be provided from the object space. Later, the object space can be updated and the updated object space used to provide updated information regarding the operating conditions of the system.

Abstract: A fuel-fired forced air condensing furnace has installed therein a recuperative heat exchanger assembly with a primary heat exchange section operative, during furnace operation, to transfer sensible combustion gas heat to air being flowed through the furnace, and a secondary heat exchange section operative to transfer latent combustion gas heat to the air. The secondary heat exchange section includes a finned tube heat exchanger structure extending between spaced apart combustion gas inlet and outlet collector boxes.

Abstract: The body of a piezoelectrically operable ink jet printhead is mounted in an upper side surface groove formed in a mounting plate member. A rear bottom section of the printhead body has an exposed top side surface portion which is flush with the top side of the mounting plate member and terminates forwardly of its rear end. A high density parallel array of mutually spaced linear conductive traces is formed on this exposed top side surface portion of the printhead body, these traces being used to transmit electrical operating signals from a separate electronic driver to piezoelectrically drivable channel sidewall sections within the interior of the printhead body. A multi-tiered printed circuit board secured to the top side of the mounting plate member is used to connect the printhead to the electronic driver.

Abstract: A hand-carryable trailer and a method for deploying and stowing the same.

Abstract: A series of hard disk drives are secured atop molded plastic support trays slidably and removably received in opposing guide channel member pairs snap-fitted into opposite side walls of a sheet metal cage structure externally used in conjunction with a file server or other computer device. Snap-fitted into rear end portions of the trays are small printed circuit boards that are insertable into hot plug sockets at the rear of the cage. Forwardly projecting guard plates on the rear end of the cage block manual access to the board/socket interface, and the surface mounted grounding leads on the board extend rearwardly beyond its signal leads to enhance grounding safety during disk drive installation and removal. At the front end of each tray is a vertical support plate upon which LED indicating lights are conveniently mounted for the associated disk drive.

Abstract: The present invention provides a novel series of 3-substituted methyl-2,3-dihydroimidazo[1,2-c]quinazoline compounds. These compounds are found useful as an active ingredient for the treatment of hypertension and dysuria.