A dryer for engine radiators which simultaneously purges moisture from the internal tubes of the radiator and the external surface of the radiator. The dryer includes a cabinet divided into an enclosed dryer compartment and an adjacent compartment for housing mechanical components including a blower and heater. An access door is provided for positioning a radiator in the dryer compartment. The blower discharges heated air through a bifurcated duct into the interior of the dryer compartment and s...

An individual thermostat unit for the valve housing of a central heating radiator replaces the conventional radiator valve mechanism and affords a simplified mounting without the need for modifications of pipe connections. This thermostat unit comprises two setting means, one for basic settings, and another for temperature settings. A setting knob gives different temperature settings by being turned on a thread. This same thread permits the setting knob to be screwed off as part of the housing o...

A device for connecting an auxiliary oil cooler to an existing automobile oil cooling radiator includes a length of tubing having a flared portion at each end. Slidably secured about the tube is a fitting which includes an exterior hex portion for engagement by a wrench, and an exterior threaded portion which is adapted to be secured in a standard, threaded female radiator fitting. The fitting of the invention also includes an interior threaded portion which is adapted to be secured about a stan...

The invention is concerned with the provision of a dipole radiator for feeding a parabolic reflector and provides a half wave dipole arranged at the mouth of a shallow cavity. The cavity is preferably circular with a diameter approximately three times its depth. In an example of linearly polarised radiator a cylindrical cavity is provided having a diameter of 0.72.lambda. and a height of 0.26.lambda. and the half wave dipole element is positioned 0.26.lambda. above the base of the cavity so that...

A radiator and shroud assembly including a generally planar radiator core 10 having a plurality of generally parallel tubes 12 interconnected by fins 14 with opposed ends defined by tanks 16 and joined by spaced sides 18 which are generally parallel to the tubes 12. Each of the sides 18 has at least one fastener receiving aperture 26 and mounting brackets 30, 32 abuts the side pieces 18 and have a truss-like configuration which is made fluid impervious by thin web 84. Fasteners 42 extend through...

A dipole antenna comprises first and second antenna radiators and first and second balanced transmission-line conductors which are electrically connected to the first and second antenna radiators, respectively. An inner conductor and a shield of a coaxial cable are electrically connected to the first and second balanced conductors, respectively to transmit a drive signal to the first and second antenna radiators. A balun is electrically connected to an intersection of the coaxial cable and the f...

A control valve assembly for use in a one-pipe steam heating system in which the passage of steam to each radiator in the system and the return of condensate from each radiator is controlled by individual valve assemblies at each radiator, the valve assemblies being temperature responsive for the regulation of heat provided at each radiator location. Each valve assembly includes a temperature-responsive valve arrangement for controlling the admission of steam to the radiator through a supply pip...

A stand and method for disassembling structures, such as automobile radiators, by separation of first and second parts thereof that are joined by a meltable bonding medium such as solder. The disassembly stand is of a simple frame construction that is provided with an adjusting platform for raising, lowering, and supporting the structure to be separated and clamps for freely suspending the structure with its joint to be separated located so as to be acted upon by a room-shaped heating structure,...

A drain pan for radiators and cooling systems includes a base panel which is molded or otherwise formed into a coffer shape defined by upstanding sidewalls extending continuously about the perimeter of the base panel. The base panel includes upwardly extending shoulders raised slightly above the base panel to support a grid formed of a plurality of upwardly extending panels. The shoulders define an X pattern on the base panel in addition to shoulder portions spaced inwardly of the sidewalls and ...

A microstrip antenna (100) achieves wider bandwidth by using an asymmetric radiating structure (110). The radiating structure (110) supports at least two resonating modes, which are preferably a differential and a common resonating mode. A feed system (130, 135) is coupled to the radiating structure (110) to excite the respective resonating modes at different frequencies to provide a radiating band for communication signals. Preferably, the antenna (100) includes patch radiators (112, 114) of su...