This invention relates to a new and improved infant WATERBEDS ENVIRONMENTS designed to simulate the intrauterine environment. This is achieved by the use of a specially designed water filled bladder pulsated by means of a pump which generates rushing water, or by a mechanical device which imparts impulses to said bladder. Audible and tactile sensations created by the pulsating devices and the rushing movement of water coact to recreate aspects of the prenatal infant environment. Novel safety fea...

Offshore platform for resisting the pressure of external ice formations in which the base is generally frustoconical having upwardly and inwardly sloping surfaces. The upper part of the structure is an inverted cone frustum with upwardly and outwardly sloping surfaces to deflect the ice as it rides up and base. The waist surface is rounded. The interior of the platform is formed of vertical tubes which are filled with frozen hard material to assist the structure in resisting external forces.

A work cabin for unhealthy environments, comprising two cabin-shaped sections, an outer and an inner section, said sections being separated from each other by an air column and vibration reducing elements, also including means for circulation of the air from the surrounding air column through the inside cabin section and via an air filter back to the surrounding air column, said filter being the inside filter element of a filter unit communicating with the surrounding atmosphere. The work cabin ...

PCT No. PCT/US79/00920 Sec. 371 Date Oct. 29, 1979 Sec. 102(e) Date Oct. 29, 1979 PCT Filed Oct. 29, 1979 A steering system (36) for vehicles (10) in which a device (90) is provided for circulating fluid through the system when operating in a cold environment. The system includes a hand metering unit (58) which is connected to opposite ends of a pilot operated steering valve (42) through a pair of pilot lines (60,62). A pressure reducing valve (94) maintains a continuous flow of fluid to the pil...

A centrifugal fan for narrow environments is described wherein a stator is mounted to a backplate and is surrounded by a cup-shaped rotor carrying a suitable impeller on its outer periphery to provide a centrifugal output from an axial input. The resultant assembly has a small axial length with a high air delivery and can be substantially enclosed in a housing and mounted in a narrow space.

A transportation system is disclosed and claimed herein for the conveyance of petroleum or other products from areas having adverse climatic conditions to a destination where the materials may be more conventionally handled. The system likewise includes means for returning transportation vehicles to the point of origin for refilling. A pipe conduit system is suspended from a plurality of supports and receives at least one vehicle movable on a trackway therethrough. The vehicle is self driven and...

A low profile linkage movable in narrow environments to drive pivotable members. A plate has lugs spaced along one edge, pivotally connected to mating lugs along an edge of the driven pivotable member. A link connects a drive lever to the plate to drive the plate and pivot the pivotable member. The link includes two spaced tabs extending from an integral bolt. The integral bolt and a pair of flanged sleeve bearings extend through a hole in the plate. The tabs receive between them a self-aligning...

A dual communication system is disclosed including a microphone for mounting for use by a wearer of a protective face mask, the output signal from the microphone being communicated to both a speaker system for local, audible broadcast and to a transmitter for remote broadcast by radio signal.

The gasification of coal can be accomplished more efficiently if it is operated at a temperature high enough so that the mineral constituents of the coal will form a molten slag which can be continuously removed from the gasifier during operation. Proper control of such a process requires careful temperature control, but the molten coal slag has been found to be corrosive to most thermocouple materials and to conventional refractory ceramics which are used as thermocouple protection tubes in oth...

A seal able to withstand high temperature, high pressure, corrosive environments including a ring-shaped core comprising an elastomer-impregnated asbestos yarn winding, and an elastomer-impregnated asbestos yarn helical winding surrounding and extending along the entire length of the core. The elastomer is a tetrafluorethylene-propylene copolymer or terpolymer, an ethylene-propylene copolymer or terpolymer, or a hydrogenated butadiene-acrylonitrile copolymer. There may be a plurality of helical ...