Abstract:
A pressure balanced turbocharger rotating seal is provided by two piston rings (66, 68) mounted on the shaft (22) of the turbocharger, one of the rings (66, 68) engaging a circumferential surface of the shaft bore in the center housing and the second ring (68) engaging a circumferential surface of the shaft bore (30) in the turbine wheel (25) shroud, with a passage (74) for introducing pressurizing gas intermediate the two rings (66, 68), the passage (74) including a circumferential channel (78) in the inner face of the turbine wheel shroud, and a compression seal (82) engaged between the center housing and turbine wheel shroud outboard of the channel.
Abstract:
A combined transducer that measures force or displacement and temperature utilizes a pair of vibrating tines to provide a simultaneous output representative of temperature and force or displacement whereby the sum or average of the vibrating frequencies of the two tines is representative of temperature and the difference is representative of force or displacement.
Abstract:
The present invention relates to the preparation and uses of 1-substitued-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts, specifically 1-hydroxyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts as reagents for the introduction of fluorine in organic compounds. In formula (I) Z is OH, OR, OC(O)R, SO3, SO3, SO2R, NO2, NO, or P(O) (OR)2 with R being an aryl or C1-C8 alkyl, where n represents 0, 1 or 2; each R1, R2, R3, R4 and R5 independently represents hydrogen, C1-C8 alkyl, aryl, C1-C8 alkyl; and each X independently represents a counterion or 2X represents a single divalent counterion.
Abstract:
Epoxy resin compositions used in preparation of laminates for electronic applications are free of the solvents typically needed in current industrial practice. The use of certain mono-substituted dicyandiamides makes possible the elimination of such solvents since all of the components are soluble in epoxy resin to an extent which provides uniform properties in the cured laminates.
Abstract:
The apply and release hydraulic parking valve (20, 120) comprises a housing (40, 140) having therein a bore (42) with first (52, 152) and second (54, 154) reservoir grooves communicating with one or more reservoir ports (46, 146A, 146B), a supply groove (63) communicating with a supply port (47, 147), and apply (44, 144) and release ports (48, 148) communicating with said bore (42, 142). A spool valve (60, 160) is located slidably within the bore (42), the spool valve (60, 160) activated by a lever (31, 131) recevied within and opening (67, 167) of the spool valve (60, 160). One end of the spool valve (60, 160) has a pair of washers (74, 76) disposed thereabout with a spring member (80, 180) located about the spool valve (60, 160) and between the washers (74, 76), and a stop sleeve (82, 182) located about the spool valve (160, 60). The spool valve (60, 160) includes a chamfered groove (61) engaging a check valve (50, 150) within the supply port (47, 147). Displacement of the lever (31, 131) effects axial displacement of the spool valve (60, 160) which opens the check valve (50, 55) to permit hydraulic fluid pressure to be communicated to be bore (42) and with the apply and release ports (44, 144, 48, 148) corresponding to the direction of axial displacement of the spool valve (60, 160).
Abstract:
A two degree of freedom gyroscope having a drive motor (20), with a permanent magnet rotor (22), which comprises an optical sensing means (11) for providing an X-axis signal and a Y-axis signal which are indicative of the displacement of the actual rotor (22) spin axis from the null spin axis (28), a torquer coil (26) looped around the permanent magnet rotor (22) and disposed in a plane orthogonal to the null spin axis, and torquer drive means (52, 54, 56) responsive to the X-axis and Y-axis signals induced in the sensing means when the actual rotor (22) spin axis is displaced from the null spin axis (28) for providing current to said torquer coil (26) to urge the axes to coincide.
Abstract:
An occupant sensing and crash behavior system for a motor vehicle determines the presence and location of an occupant (16, 20, 22) to then control the deployment of supplemental restraint systems such as air bags or inflatable seat/shoulder belts. Crash anticipation and crash severity sensors (46, 48) provide additional inputs to the system to determine the behavior of the crash and the occupants therein. An infrared sensor (34) emits a plurality of beams to determine the location and position of the occupant and does a proximity sensor located on the air bag door or the occupant seat. Occupant weight (18) plus the presence and orientation of a child seat are considered. Seat belt control (26) is provided to control the length of the seat belt during an impact or crash.
Abstract:
The present invention provides a single step heating and pressurization densification process for providing a carbon-carbon composite. A pitch, either coaltar or petroleum pitches or mesophase pitches, is added to carbon fibers and then heated to approximately 450 DEG C to convert the pitch to a mesomorphic condition pitch which infiltrates the carbon fibers. The combination is further heated to at least 460 DEG C or higher, and under a pressure of approximately 1000-2000 psi, to convert the mesophase condition pitch to a carbon matrix or char which, with the carbon fibers, provides a high density carbon-carbon composite. The composite may be final heat treated to produce a carbon aircraft brake disc.
Abstract:
Aquasi monofilament having a high strength polyethylene fiber core with an adherent, abrasion resistant polymer sheath is prepared by feeding the core yarn through a crosshead die, while simultaneously supplying a polymer melt at a temperature greater than themelting point of the core yarn to the die, for sheathing the core yarn within the die with the melt under a sufficient pressure to cause the melt to adhere to the core yarn. The abrasion resistant polymer sheath includes an effective amount of a first polymer having ethylene crystallinity, a density of at least about 0.94 g/cm , and a melt index of less than about 0.1 g/10 min. The composition used to sheath the core yarn is characterized by a weight average tensile strength at yield of greater than about 13.8 MPa. The quasi monofilament has utility in applications subjected to high abrasion, such as sports fishing lines, kite lines, dental floss, "weedeater" lines and tennis racket strings.
Abstract:
The present invention provides an improved process for the regeneration of ion exchange gels and resins. Exhausted regenerating solutions (402, 456) from either a cationic (455) or anionic (401) exchange column are converted into fresh regenerating solutions via one or a combination of electrodialysis units having at least one bipolar membrane. The spent regenerants may be treated in an electrodialytic water splitter (428), an acid (458) or base (409) purification unit, or any combination thereof, to reclaim as much or as little of the regenerating solution as is required by the particular process.