Abstract: A manually or automatically controlled adjusting bed-chair combination for persons suffering limited mobility due to accident, disease, or age who thus require intensive caregiving efforts by others. This portable body supporting device provides a patient with greater mobility and self-care even if he/she is confined therein for weeks, months, or longer. The bed-chair includes an upper frame for supporting the invalid's body in a large number of postures ranging from side, supine, sitting, reclining or standing. In turn, this upper frame is articulated by lower supporting frames powered by linear actuators, or the equivalent, and controlled by the patient control or the caregiver's override and automatically preset control to provide a timed regimen of turning or tilting according to the occupant's needs. Whether in bed or chair mode, the support frame consists of an upper body, middle and leg-foot segment. The mid-section provides a base to which the other two sections are pivotally mounted.

Abstract: R12, which contains chlorine, and hydrogen-contributing lubricants react to form acids such as hydrogen chloride and hydrogen fluoride and simultaneously, R12 is converted to R22. Such reactions are undesirable because the acids which form destroy the metallic components of a refrigeration system and cause the breakdown of the lubricants.The present invention provides a compositions for use in compression refrigeration and air-conditioning which substantially reduce the occurrence of the foregoing problem.

Abstract: A nickel base superalloy for columnar grain, directional solidification which contains Re for strength and creep resistance, and substantially eliminates the use of Zr and minimizes Si to prevent DS grain boundary cracking. The creep- and stress-rupture properties, which approach nickel base superalloy single crystal performance, are achieved without the use of high temperature gamma prime solution treatment.

Abstract: A single crystal nickel alloy is provided having many of the foundry and performance characteristics of the higher density, single crystal, nickel base super alloys from which the vanes and blades are cast for high performance turbine aircraft engines. The lower density of this alloy permits its use for rebuilding and upgrading the performance of older turbine aircraft engines of designs which cannot withstand the centrifugal forces generated by the new state of the art higher density single crystal super alloys. The alloy for the first time provides a lower density single crystal alloy capable of heat treatment to stabilize its microstructure for high temperature, high stress use. It also provides for the first time a lower density alloy having acceptable resistance to the effects of high temperature sulfidation, salt corrosion and also to have good coating life.

Abstract: Single crystal nickel-base superalloy having very fine gamma prime after heat treatment in a temperature range permitting total gamma prime solutioning without incipient melting. Component of the heat treated alloy has exceptional resistance to creep under high temperature and stress, particularly in that part of the creep curve representing one percent or less elongation. The alloy exhibits exceptionally low steady-state creep rate.

Abstract: The alloy is a nickel base, superalloy specifically intended for the making of castings which consist of a single crystal. The castings are intended for use under extreme conditions of high temperature and stress. The alloy, for the first time, achieves the desired characteristics of phase stability, high stress-rupture strength and resistance to oxidation while maintaining a sufficient temperature differential between gamma prime solvus and incipient melting temperatures, that it is practical to solution heat treat without unacceptable percentages of rejects due to failure either to completely solution the primary coarse gamma prime or to initiation of incipient melting. In a modified form the coated oxidation/corrosion resistance of the alloy is increased by the addition of a trace quantity of hafnium.

Abstract: An improved alloy for use in directional solidification casting is disclosed in which the proportions of carbon, zirconium, tungsten and molybdenum have been changed to produce a new ultra high strength casting alloy free of the problem of grain boundary cracking which has been encountered in the production of directional solidification castings of this type of alloy and to minimize M.sub.6 C plate phase formation in turbine blades under high temperature conditions over extended operating periods. In addition there is disclosed the unexpected characteristic of the alloy's substantial increase in fracture toughness and tensile ductility under extreme operating conditions.