Abstract: A system for automatically locking a lavatory door on an aircraft from a remote location comprises means for activating the system, means for sensing the presence of a person in the lavatory, means for locking the lavatory when it is unoccupied and means for selectively overriding the system to allow entry by authorized personnel.

Abstract: A novel method is provided for reticulating adhesive-backed, perforated substrates. The method entails tacking a continuous sheet of viscous reticulating adhesive to one side of the substrate and then contacting the other side with heated air. The temperature of the air is regulated such that the adhesive softens and bubbles over the perforations but final cure is not initiated. The air is directed at a velocity such that the bubbles burst and the adhesive is redeposited onto the adhesive-side of the substrate.

Abstract: Ferromagnetic compositions having intrinsic magnetic coercivities at room temperature of at least 1,000 Oersteds are formed by the controlled quench of molten rare earth-transition metal alloys. Hard magnets may be inexpensively formed from the lower atomic weight lanthanide elements and iron.

Abstract: A method is provided for end finishing an elongated composite trim strip. The show surface of a strip is first coated with a mask material. The strip is then cut so that the mask material covers the show surface adjacent the cut end. The end is painted and the mask material peeled away taking with it any excess paint and providing a clean edge between the painted end and the strip's show surface.

Abstract: A method if provided for continuously hydrolyzing urethane foam in a vertically oriented hydrolysis reactor. In a preferred practice, a bed of foam particles is formed in the reactor. Superheated steam is flowed continuously upward through the bed at a temperature and rate such that only the foam particles then adjacent the bottom of the reactor are hydrolyzed and the bulk of the bed is not fluidized. Unreacted steam heats the unhydrolyzed foam. Liquid hydrolysis products are drained as they are formed to prevent hydrolysis-impeding liquid saturation of unhydrolyzed particles.

Abstract: An extrudable thermoplastic body solder which has the necessary physical properties for automotive applications is formed from a mixture of high and low viscosity nylons based on dicarboxylic acids and hexamethylene diamine filled with suitable particulate and fibrous fillers.

Abstract: A portion of a nonmagnetic body of manganese-aluminum based alloy is tempered in situ to a state of high magnetic coercivity. The magnetically coercive portion may be used, e.g., to store magnetically readable information or to provide a tailored permanent magnetic field for an electrical device.

Abstract: Seize is prevented between metal surfaces exposed to high temperature and corrosive gases by an antiseize coating layer. The coating comprises per 100 weight parts, about 10-30 parts chemically inert anti-seize particles that have a fusion point above about 100.degree. C. and are in the size range of from about 2-100 microns; about 5-25 parts of a polymeric binder resin that is adherent to metal surfaces; and the balance, a volatile solvent for the resin. The liquid coating is applied by suitable means, and dried by evaporating the solvent. At least a layer of the particles remains dispersed in the dried resin and provides the coating with its antiseize properties.