Abstract:
A liquid filter includes an annular filter cartridge and a combination anti-drain back and relief valve assembly. The combination valve (40) includes a valve seat (42) from which axially extending arms extend and a spring retainer (54) and spring (72) which holds a gasket (64) against the valve seat (42). The gasket (64) includes an anti-drainback portion which projects from the valve seat (42) and a relief valve portion which is supported on the valve seat (42). Upon assembly the combination valve (40) and filter element (18) in the housing (12), the filter assembly is supported by the spring retainer (54) and is forced into sealing engagement with the gasket (64), holding the latter against the valve seat (42) in a gasket engaging area (62) between the relief valve portion and the anti-drainback portion. This assembly process also removes the coil spring load from the barbs on the valve seat arms (48). The spring retainer (54) is designed such that the range of movement relative to the valve seat (42) is limited during handling before and during assembly of the liquid filter, thereby preventing over-compression of the spring (72) so that the spring force is consistent, thereby resulting in a consistent opening pressure of the relief valve.
Abstract:
The brake disc annular drive insert (20, 30, 50) comprises a single (20, 50) or two-part (30) generally cylindrical member with radially extending flanges (26, 36, 46, 56) at opposite axial ends thereof. The drive insert (20, 30, 50) includes a generally cylindrical body (22, 32, 52) having an opening (21, 31, 51) at one side thereof which extends diametrically into the body (22, 32, 52) and terminates at a point between the center of revolution (A) of the body (22, 32, 52) and an outer surface of the body (22, 32, 52). The opening (21, 31, 51) in the body (22, 32, 52) extends to an inner surface (24, 34, 54) of the body (22, 32, 52) to provide a generally rectangular opening (21, 31, 51) for receiving a spline (8) of a torque tube (6). The flanges may comprise either generally annular flanges shaped complementary with the generally cylindrical body and also may be truncated at a side opposite the opening in the body. The two-part drive insert (30) comprises one part (38) having one flange (36) and the body (32) with a radially inwardly extending shoulder (38A) defining an end of a recess (39) and a second part (40) which has the other flange (46) and includes an axially extending portion (42) having a radially outwardly extending shoulder (45) which can be entered rotatably into the recess (39) of the body (32) and engaged with the radially inwardly extending shoulder (38A).
Abstract:
The invention relates to azeotrope-like compositions of difluoromethane and 1,1,1-trifluoroethane which are useful as refrigerants for heating and cooling applications and as blowing agents for the preparation of thermal plastic foam and polyurethane foam.
Abstract:
Azimuth and elevation information relating to ground based weapons equipment is inputted to a north finding system. The system determines angular azimuth and elevation errors and transmits signals to a display arrangement for indicating the direction to rotate the system so as to eliminate the errors. As the system is aimed, a gyro included in the north finding system measures angular rotation about its input axis and accelerometers measure the change in tilt. The computer projects the rotations to the horizontal plane and determines the change in azimuth. This is a continuous procedure until all errors are eliminated.
Abstract:
A control for an electropneumatic braking system applies a step function to an electronically operated proportional modulator to improve transient response. The current is controlled by a treadle operated signal generator operated by the vehicle operator and by actual feedback braking pressure as generated by a pressure sensor which senses braking pressure. The system includes a master controller which receives and processes information from the operator operated treadle operated signal generator and transmits desired pressure signals to wheel controllers which independently control each wheel of the vehicle.
Abstract:
A retainer (70) for locating a poppet member (48) of a control valve (40) in a bore (30) while positioning a return spring (72) connected to an input member (50) within bore to direct substantially turbulent free air through slots in the retainer to a poppet member for distribution to a chamber when an input force moves a plunger (42) of the control valve away from the poppet member.
Abstract:
A telescoping seat belt device comprising: a support (42, 142); and a buckle plate (70) for supporting a seat belt buckel (74); and a pivoting and sliding mechanism (50, 90, 150, 190) for telescopically moving the buckle plate and a buckle from an extended position to a stowed position. The mechanism includes an activation bar (50) rotationally mounted on the support (42) and a slide link (60) pivotally supported at one end of the first pivot (52); a second link (90) rotatably secured to the second pivot, wherein the buckle plate (70) is slidable on the slide link (60) from a first position to a second position, and wherein the second link (90) is connected to the buckle plate (70) such that the buckle plate moves on the slide link (60) in response to the movement of the second link. A first spring (58) joins the activator bar (50) and the second link (90) coupling the motion of the activator bar (50) to the second link such that in response to the movement of the activator bar the first spring urges the second link to rotate towards the first pivot (52) such motion causing the buckle plate (70) to slide toward the second position along the slide link, wherein as the buckle plate moves toward the second position the slide link (60) is caused to rotate toward the second pivot carrying the buckle plate with it and moving the buckle (74) to the stowed position.
Abstract:
A silicon nitride sintered body has a composition consisting essentially of 85 to 94 % by weight beta silicon nitride, 6 to 15 % by weight grain boundary phase consisting essentially of (i) at least two rare earth elements, wherein yttrium is considered a rare earth, and, optionally, strontium which, calculated as SrO, is 0 to 2 percent by weight of the total body, and (ii) at least two of Si, N, O and C, and an additive consisting essentially of a metal carbon compound present in the amount of about 0.2 to 3.5 % by volume. The additive is substantially homogeneously dispersed within the sintered body. The sintered body has a microstructure wherein (i) the beta silicon nitride grains are acicular and have an average grain width ranging from 0.5 to 1.5 mu m, (ii) at least 25 % of the grains have width greater than 0.7 mu m, and at least 10 % of the grains have width greater than 1 mu m, and (iii) no more than 5 % of grains have width greater than 3.5 mu m and apparent aspect ratio greater than 5, with the proviso that the average aspect ratio is at least 1.8 and a fracture origin, at least 90 % of which is comprised of large acicular beta Si3N4 grains, the average size of which ranges from about 15 to 50 mu m. Such a ceramic has high strength, high toughness and long term durability, and is especially suited for industrial applications such as components for gas turbine and automotive engines.
Abstract:
In a continuous crystallization process employing an evaporative draft tube baffle (DTB) crystallizer apparatus to produce crystal product, the improvement which is feeding at constant rate to the body of slurry a suspension of crystals in a solution at a temperature no greater than the operating temperature of the DTB crystallizer vessel, said suspension of crystals comprising solute and 6 to 24 % by volume, based on total volume of the suspension, of crystals with at least 35 % of the crystals larger than 14 mesh (1.2 mm) in size, in an amount whereby the weight of crystals is 4 to 25 percent of the weight of the product withdrawn, whereby cycling in the particle size distribution of the product withdrawn is reduced and rate of production of granular size crystals is increased.
Abstract:
A method and apparatus for cooling the heat generated by a gas turbine engine mounted in a compartment is provided. The apparatus comprises a novel eductor (60) that incorporates a mixer nozzle (70) to entrain sufficient air flow through the compartment to provide all the necessary cooling. The engine's oil cooler (62) is mounted to the eductor so that the entrained air flow passes through it and cools the engine's oil. The novel eductor also has means for receiving a flow of high velocity air (68) from the engine and injecting this air downstream of the mixer nozzle to enhance the entraining of the cooling flow.