Abstract:
Azeotrope-like compositions comprising pentafluoroethane and 1,1,1-trifluoroethane are stable and have utility as refrigerants for heating and cooling.
Abstract:
A process for forming a high temperature oxidation resistant coating on a carbon-carbon composite is disclosed and claimed. The process comprises applying a cyclosiloxane monomer blend containing a filler such as silicon carbide to a carbon-carbon composite, polymerizing and pyrolyzing said blend to form a filled black glass protective coating on the carbon-carbon composite.
Abstract:
An improved fiber reinforced glass composite includes a carbon fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. Graceful failure can be obtained when the carbon fibers are highly graphitized.
Abstract translation:改进的纤维增强玻璃复合材料包括具有经验式SiC x O y的黑色玻璃陶瓷基质中的碳纤维,其中x为约0.5至约2.0,优选0.9至1.6,y为约0.5至3.0,优选0.7至1.8 。 优选地,黑色玻璃陶瓷衍生自含有连接到硅和/或氢化物 - 硅基团的乙烯基的环硅氧烷单体。 当碳纤维高度石墨化时,可以获得良好的失效。
Abstract:
A protective layer for polymeric composite substrates comprises a fiber-reinforced glass composite having a refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. The black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
Abstract translation:用于聚合物复合衬底的保护层包括在具有经验式SiC x O y的黑色玻璃陶瓷基体中具有难熔纤维的纤维增强玻璃复合物,其中x为约0.5至约2.0,优选为0.9至1.6,y为约 0.5〜3.0,优选为0.7〜1.8。 黑色玻璃陶瓷衍生自含有连接到硅和/或氢化物 - 硅基团的乙烯基的环硅氧烷单体。
Abstract:
An improved fiber reinforced glass composite includes refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
Abstract translation:改进的纤维增强玻璃复合材料包括具有经验式SiC x O y的黑色玻璃陶瓷基质中的耐火纤维,其中x为约0.5至约2.0,优选0.9至1.6,y为约0.5至3.0,优选0.7至1.8。 优选地,黑色玻璃陶瓷衍生自含有连接到硅和/或氢化物 - 硅基团的乙烯基的环硅氧烷单体。
Abstract:
This invention is directed to a composite formed from a gamma phase polyamide such as nylon (6) having dispersed therein a particulate material such as a phyllosilicate as for example montmorillonite.
Abstract:
A signal generator (10) for generating an electrical signal which varies in accordance with movement of an actuating member includes a plunger (44) slidable mounted within a housing (12) which carries a pair of permanent magnets (58, 60) for generating a magnetic field to be applied to a hall effect generator (36). As the plunger (44) is moved relative to the hall effect generator (36), the magnets (58, 60) are also moved relative to the hall effect generator (36), thereby varying the magnetic field applied thereto. Accordingly, a variable output signal is generated as a function of the position of the input member.
Abstract:
A filter element (14) is assembled by first fixturing the parts together so that the assembly may be manipulated by automated assembly equipment before the end cap (58) sealant (70, 75) is fully cured in an oven which is off-line from the automated assembly equipment. In one embodiment, a Platisol sealant (70) is used, which is "kiss-gelled" by rapidly increasing the temperature of the sealant (70) for a few seconds to cure the sealant (70) sufficiently to permit the assembly to be handled but without fully curing the sealant (70). The end cap (58) on the other end of the assembly is then installed and kiss-gelled before the completed (but uncured) assembly is transferred to a curing oven where the Plastisol at both ends of the assembly is fully cured at the same time. In another embodiment of the invention, a small bead or band of an ultravioletly cured polymer sealant (75) is dispensed against adjacent the centertube (26) of the assembly and the ends of the inner tips (52) of the pleats, and a band of conventional Plastisol sealant (70) is dispensed on the rest of the end cap (58). The ultravioletly cured polymer is then cured by ultraviolet light to permit the partially completed assembly to be inverted and a similar end cap (58) installed on the opposite end, before the completed (but uncured) assembly is transferred to an off-line curing oven where the Plastisol is fully cured.
Abstract:
A seal (22) having a cylindrical body (56) with a first bead (66) located between a mounting flange (42) on a master cylinder (12) and end wall (74) of a front shell (72) of a brake booster (14) and a second bead (68) retained on a piston (18) located in a bore (26) of the master cylinder (12). The cylindrical body (56) maintains the piston (18) in axial alignment with an output push rod (20) in the brake booster (14) when the mounting flange (42) is positioned on bolts (75, 75') extending from the end wall (74) of the front shell (72) to aid in the assembly of the master cylinder (12) with the brake booster (14).
Abstract:
In a wheeled vehicle (11) there is provided a means to supply pressurized brake fluid to actuate the wheel brakes of the vehicle, and includes an anti-skid brake control system (9). The control system comprises: an operator actuated control (10) to determine the operator commanded supply of brake fluid; a means (23) responsive to the operator input (10) to control directly the operator commanded brake fluid supply; means (14) to determine the commanded wheel deceleration (Wp) and a means to measure the wheel velocity. There is also provided a means (25, 29, 33, 35) to calculate a wheel deceleration upper bound (maximum, Wa) dependent upon the magnitude of the wheel velocity, and a means to select the lesser in magnitude of the commanded wheel deceleration and upper bound wheel deceleration. If the commanded wheel deceleration is selected, then the commanded brake fluid pressure is supplied to the brakes. If the upper bound wheel deceleration is selected, then a lesser brake fluid pressure determined by the deceleration upper bound is supplied.