Method and apparatus for the regulation of a heating installation for rooms
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Space heating installation control - uses room thermostats overridden by boiler output temp. sensor in colder weather
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APPLICATION OF A LOW TEMPERATURE STEAM MACHINE TO THE RECOVERY OF CALORIFIC ENERGY FROM THE FUMES OF A COMBUSTION THERMAL GENERATOR TO ENSURE THE RELIEF OPERATION OF THE GENERATOR, AND INSTALLATION THUS OBTAINED
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Fuel economiser for IC engine - has heat exchangers in exhaust and oil systems to drive expansion turbine
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Method and apparatus for controlling heat pumps
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Heating system linking two different heat sources to two distinct diffuser ductworks
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Quenching bath for metal articles and use of this bath
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METHOD AND ARRANGEMENT FOR THE RECOVERY OF THERMAL ENERGY
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Domestic central heating and hot water system - has solar and waste heat recover units forming main heat source with make=up heat obtained from combustion installation
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Heat pump and refrigeration system - uses additional sources which include sub-soil water and deep water source
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Hydraulic rotary barrel pumps or motors
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Disc brake
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Disc brake assembly with replaceable friction members
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Improvements in hydraulic suspension systems of vehicles
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Control device for retractable aircraft undercarriage and for the trap-door closing its housing
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Hydraulic jack having two consecutive and completely different actions and embodiments to vehicle brakes
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Preparation of alloys on the basis of magnesium-zirconium
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Alternating-current torque motors
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Under-carriage with three wheels arranged on the same shaft
