Abstract:
A rapidly solidified aluminum based alloy consists essentially of the formula AlbalFeaMbSicRd, wherein M is at least one element selected from the group consisting of V, Mo, Cr, Mn, Nb, Ta, and W; R is at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, and Y; ''a'' ranges from 3.0 to 7.1 atom %; ''b'' ranges from 0.25 to 1.25 atom %; ''c'' ranges from 1.0 to 3.0 atom %; ''d'' ranges from 0.02 to 0.3 atom % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio [Fe+M]:Si ranges from about 2.0:1 to 5.0:1 and (ii) the ratio Fe:M ranges from about 16:1 to 5:1. The alloy exhibits improved elevated temperature strength due to the rare earth element additions without an increase in the volume fraction of dispersed intermetallic phase precipitates therein. This enhancement of elevated temperature strength makes the alloys of the invention especially suited for use in high temperature structural applications such as gas turbine engines, missiles, airframes and landing wheels.
Abstract:
A connecting assembly for securing and supporting a fuel line with respect to the inlet or outlet of a fuel filter includes a mounting base secured to the filter housing through wich the fuel communicates and which has an outer surface defined by a series of engagement surfaces which join with one another to define corners. A fuel line coupling engages the mounting base. A bracket includes a circumferentially extending ring having an inner circumferential surface which is defined by serrations which engage the corners when the bracket is installed on the mounting base. An arm extending from the ring includes a recess which engages the fuel line, thereby orienting and supporting the fuel line with respect to the filter.
Abstract:
Compositions comprising 1,1,1,2-tetrafluoroethane, pentafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, propane and trifluoromethane, having a vapor pressure from about 12.2 psia to about 18.4 psia at -40 DEG F.
Abstract:
Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to about 18.4 psia at -40 °F, are useful as refrigerants.
Abstract:
A filter assembly includes a base and a filter cartridge supported on the base. The filter cartridge includes a filter element mounted within a cup-shaped housing having a circumferentially extending wall and an open end. In the preferred embodiment, a collar circumscribes the housing and includes a set of cooperating bayonet lugs which cooperates with a corresponding set of bayonet lugs on the base, permitting easy removal of the filter when the filter is changed by merely rotating the collar one quarter of a turn. In the alternate embodiment, the lugs are included within the housing itself and cooperate directly with lugs on the base.
Abstract:
A porous body derived from a polymeric material, e.g. a gel-forming polymeric material, said body having an open-celled 3-dimensional lattice structure, a density of less than about 1.0 g/cc (cubic centimeter) and a surface area equal to or greater than about 85 m /g. In accordance with another embodiment a method for the removal of a desired material, such as metal(s), from a fluid stream employs one or more porous bodies of this invention as the contacting material which removes the desired material from the fluid stream.
Abstract:
A combination solenoid valve and shuttle valve (60) particularly for use in an anti-lock braking system comprising a shuttle valve (50) which is slidingly and sealingly received adjacent an end of the solenoid valve (40). The shuttle valve (50) includes a stepped interior opening (54) which sealingly receives the end of the solenoid valve (40), such that slidable movement of the shuttle valve (50) causes an insert (55) within the interior opening (54) to seat sealingly over a solenoid insert seat (41C) in order to isolate a master cylinder (12) from a wheel brake (16). The shuttle valve (50) includes a one way build orifice (30), which permits restricted fluid flow between a pressure source (18) and the wheel brake (16), a feedback orifice (36, 36A) which permits restricted fluid flow from the pressure source (18) to the master cylinder (12), a pump check valve (23) which prevents fluid flow from the shuttle valve (50) back toward the pressure source (18), a poppet check valve or floating feedback washer (38, 38A) which permits fluid flow from the master cylinder (12) toward the wheel brake (16) and bypassing the feedback orifice (36, 36A), a release flow communication (21) permitting, upon brake release, fluid to flow from the wheel brake (16) directly toward the master cylinder (12), a check valve (29) which permits fluid to bypass the shuttle valve (50) by flowing from the wheel brake (16) to the master cylinder (12), and a check valve floating washer or build poppet (32, 32A) which permits fluid flow from the wheel brake (16) to the master cylinder (12) via the feedback orifice (36, 36A), bypassing the build orifice (30, 30A).
Abstract:
The combination solenoid valve and integral shuttle valve (10) comprises a solenoid valve (40) having windings (41) which actuate a rod (43) that engages a ball valve (44). An end (61) of the solenoid valve (63) includes an end filter mount (80) having a filter (77) and engaged by a shuttle valve (50). Located sealingly and slidably within the end (61) of the solenoid valve (41) is the shuttle valve (50) which is biased away from the ball valve (44) by a spring (58). The shuttle valve (50) has at least one through opening (55, 55A) which is aligned with a movable orificed washer (90) located about an extension (54) of the shuttle valve (50). An end section (74) of the bore (17) adjacent the end (61) of the solenoid valve (40) includes a master cylinder passage (14), a first bore section (71) includes a pressure source passage (20) and communicates with lateral openings (49) in the end (61) of the solenoid valve (40), a second bore (72) section communicates with a wheel brake passage (13) and with lateral openings (48) in the solenoid valve (40), and a third bore section (73) communicates with a sump passage (24) that is aligned with lateral openings (47) in the solenoid valve (40). During operation of the solenoid valve (40), the shuttle valve (50) can slide and displace the washer (90) into engagement with a body member (91) of the solenoid valve (40) and cause pressurized fluid from the master cylinder passage (14) and pressure source passage (20) to communicate through an orifice (92) of the washer (90).
Abstract:
The present invention relates to a novel heat treatment process, and the alloy products produced thereby. The heat treatment process includes heating an alloy at a temperature and for a time sufficient to cause crystallization, cooling the alloy at a rate greater than about 10°C per minute, preferably greater than about 50 °C per minute, and most preferably greater than about 100 °C per minute. Alloys of many compositions and having either amorphous, surface crystallized or partially bulk crystallized structure may be beneficially treated. Alloy strips and cores heat treated according to the present invention display B-H loops which display a discontinuous change in slope at near zero field conditions. Alloy strips which have been heat treated according to the present invention display greatly increased resonant output voltages and are particularly useful as resonant markers in article surveillance systems. Cores which have been heat treated according to the present invention display constant permeabilities up to about 1 MHz and are particularly useful as EMI filters and high frequency transformers.
Abstract:
A brake system (20) comprising: a master cylinder (26) and a pump (12) for selectively pressurizing an associated brake cylinder or cylinders; a motor (14) for powering the pump; a control circuit (16, 90) for modulating motor speed in response to a signal indicative of desired braking effort and actual braking effort; and a control valve (30) responsive to master cylinder pressure for controlling pump flow and for permitting the decay of pressure in the brake cylinders.