Abstract:
A clutch drive for a vehicle engine cooling fan includes a pulley portion (32) which is driven by the vehicle engine, a fan plate (22) which rotatably mounts the engine cooling fan, and a pressure plate (28) which is yieldably urged into engagement with the fan plate (22) by a series of circumferentially spaced coiled springs (62). A spring stabilizer (72) defines a circumferentially extending cavity (78) which receives several coils of the spring to stabilize the latter and to prevent displacement of the coils circumferentially with respect to each other during engagement and disengagement of the clutch. The stabilizer (72) slidably engages the pressure plate (28) and is mounted on the pulley (32) thereby taking up clearances to prevent rattling and also to transmit torque to the pressure plate (28).
Abstract:
An adaptive braking/traction control system (10) comprising a number of solenoid valves (80, 150, 152) to control pressure to a number of brake cylinders (62). The system is operative in an anti-lock mode to control the motion of skidding wheels and also operative in another mode to control the tractive torque to the wheels. Pressure activated isolation valves (90) are positioned between a master cylinder (22), the solenoids and the various brake cylinders to control fluid communication therebetween. The isolation valves are activated by an electrically controlled pump.
Abstract:
Process for manufacturing printed circuit boards in which a radiation curable material (10) is applied to a substrate (14), the material (10) is exposed to radiation and developed to expose those regions where a first conductor circuit pattern is to be formed. The covered substrate is plated and/or sputtered with a metal (24). A second layer of curable material (18) is processed like the first one, and a second metal is plated onto those regions of said electrolessly plated and/or sputtered metal coating (24) where said circuit pattern (32) is to be formed. The second metal (32) forms the remainder of said first conductor circuit pattern (32). These steps are repeated to form additional conductive circuit patterns.
Abstract:
The present invention is a flexible impact resistant article comprising a plurality of prepreg packets. Each prepreg packet comprises at least about 2 prepreg layers. Each prepreg layer comprises a plurality of coplanar fibers embedded in a polymeric matrix. There is a means to maintain at least a portion of each prepreg packet in successive layers. The prepreg packets are unattached to each other over a portion of their adjacent areas, preferably over a substantial portion of their adjacent areas. The plurality of packets results in improved flexibility.
Abstract:
This invention relates to a process in which a fiber is formed by spinning a melt or solution of a polymer through a capillary spinneret having a length/diameter (L/D) ratio equal to or greater than about 25:1, and fibers formed by such method.
Abstract:
The combination accumulator and variable volume sump (50) comprises a housing (52) having therein a stepped bore (56). A pair of U-shaped piston (60, 80) are disposed within the stepped bore (56), the first piston comprising an accumulator piston (60) and defining with the housing (52) and stepped bore (56) a first chamber (70) containing therein pressurized medium. The second piston (80) defines with the housing (52) and stepped bore (56) a second chamber (90) containing therein pressurized fluid. Open ends of the U-shaped pistons (60, 80) are received one within another, and a spring (95) is disposed between interior openings (62, 82) of the pistons (60, 80) to bias them apart. The housing (52) has a pair of openings (54, 59) for communicating pressurized fluid, one opening (54) communicating with the second chamber (90) and the other opening (59) communicating with the stepped bore (56) in order to communicate pressurized fluid to the first piston (60). Displacement of the first piston (60) along the stepped bore (56) results in a corresponding increased displacement of the second piston (80) relative to the housing (52).
Abstract:
A multilayered ductile product is disclosed comprising a rapidly solidified, homogeneous alloy foil metallically bonded to a substrate, wherein the substrate is capable of undergoing a substantial degree of plastic deformation without substantial degradation of its ductility. The product is particularly useful as brazing strip. Also disclosed is a roll bonding process for producing continuous ductile brazing strip.
Abstract:
A filtering element includes a circumferentially extending filter media (48) having a pair of opposite ends. An end cap assembly (58) closes the ends of the filtering media (48) and consists of an annular cup-shaped member (60) defining a circumferentially extending trough (68). A circumferentially extending band of sealant (70) is dispensed into the trough (68). The media (48) and the centertube, which supports the inner diameter of the media (48), is installed in the sealant (70) within the trough (68). The sealant (70) may be either Plastisol or a photo-initiating polymer. The end cap (58) can be made transparent to ultraviolet light, so that the photo-initiated polymer can be cured by transmitting ultraviolet light through the end cap, and is made of a randomly distributed nonwoven array of fibers and a binder resin.
Abstract:
An improved protective layer for ceramic insulating bodies comprises a 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:用于陶瓷绝缘体的改进的保护层包括具有经验式为SiC x O y的黑色玻璃陶瓷基体中的耐火纤维的复合材料,其中x为约0.5至约2.0,优选为0.9至1.6,y为约0.5至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:
Compounds having non-linear optical activity of general formula (I), wherein D and A are electron donor and acceptor groups, respectively, R and R are aromatic bridging groups, X and Y are preferably groups capable of partaking in polymerization reactions are suitable for use in polymer-based light modulator devices.