A sealing apparatus for isolating a ruptured motor vehicle radiator tube connected between two fluid reservoirs consisting of a valve positioned to seal at least one end of the tube and a bar of impact shatterable material disposed within the tube arranged to bias the valve apart from the end of the tube.

A planar antenna includes a first slotted waveguide serving as a power-feed unit, and a second slotted waveguide of planar type coupled with the power-feed waveguide, for radiating circularly polarized microwaves into space. The second waveguide has a metal plate in which a two-dimensional slot array consisting of a plurality of rows of slots is formed. An insulative layer is provided on the second waveguide to cover the slot array. A plurality of rows of metal patch radiators are provided on th...

A deployment system for controlling unfolding kinematics of radiator panels 26 of a space power system. The deployment system includes a plurality of forming mandrels 30 associated with a housing 38 of opposing generally triangular plates 40. Within the housing, a drive wheel 52 and two additional guide wheels 50 interact with the mandrels to effect predetermined deflection and deployment of the multiple radiator panels.

An improved thermal radiator uses host materials having high internal reflection and scattering co-efficients for improved effectiveness. Selective thermal radiators are used for frequency conversion of incident radiation through the Welsbach effect. A Welsbach material screen is used to convert incident IR radiation into visible radiation, permitting visual observation of IR radiation and facilitating control and monitoring of IR equipment. Welsbach material is also used as a dynamic IR target ...

A snap on fillerneck for a tank 52, 76 on a heat exchanger includes a hollow body 10 having an interior sealing surface 20 intermediate its ends 12, 14 which is adapted to be engaged by a seal 22 on a pressure cap 24 and which faces axially toward one end 12 of the body 10. An exterior flange 28 is located on the end 12 of the body 10 and has a pressure cap retaining surfaces 30, 32 for retaining the pressure cap 24 thereon. Resilient fingers 36 extend from the other end 14 of the body 10 and ha...

A radiator having a header is cleaned by at least partially immersing the radiator in a cleaning liquid so that the header is immersed in the cleaning liquid and then applying ultrasonic energy to the cleaning liquid at an energy sufficient to cause cavitation of the liquid. The header is oriented in a direction toward the source of the ultrasonic energy, whereby the header is in closer proximity to the energy source than the remainder of the radiator, so that the ultrasonic energy is initially ...

A building heating system with a plurality of steam radiators is provided with a control unit for the steam boiler. The control unit receives signals representative of the outside temperature and the pressure of the steam in the feeder conduit. The control unit shuts off the boiler when the steam pressure in the feeder conduit exceeds a predetermined value corresponding to a given measured outside temperature. After the pressure has decreased to a value below the predetermined value for the meas...

A cooling fan for radiators and the like in which the hub of the fan has a plurality of radially extending hub blades extending across the face of the hub and forwardly of said face, the hub blades serving to distribute and take up the flow of air which impinges against the hub and throw or deflect the air into the path of air flow that is created by the main blades.

A protective cover for use on motor vehicle radiators while the vehicle is being serviced, fits over a radiator to protect it from damage which might otherwise be caused by inadvertent impact of a tool or engine component being removed or replaced, and to protect hands and other body parts of service personnel from cuts resulting from contact with sharp heat exchanger core fins of the radiator, or burns resulting from contact with hot radiator components, comprises a flexible pad having a front ...

A universal pressurizing adaptor for pressurizing an engine cooling system in leak testing is connectible to the cooling system of an automotive vehicle. The adaptor includes a cylindrical body having an adaptor neck located at one end, and an overflow vent and a flexible adaptor hose attached to an outlet neck located at the other end of the adaptor. The adaptor neck is connectible to a conventional pressure cap of a pressurizing pump and the adaptor hose is connectible to the overflow vent joi...