Engine compressor built with prefabricated elements with rotary valve for pneumatic piston control, especially for heat pumps
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Engine compressor with low temperature drive
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Engine compressor
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Absorption collector recovering solar energy - has pipes covered by mixture of heat-conductive and transparent materials
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Pile driving rods for upright solar energy tubes - have hood, and shaft guided lost tip with tube holders
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Pressure vessel for liq., gas or granulated solids - consists of elements assembled to give mechanical integrity and inner foil bag(s) providing leak-tightness
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Ground absorption heat-storage unit - has heat-exchangers laid in conductive strata between insulating strata
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Mechanical foil connection method - is used for metal foils providing liquid and gas tight connections to container walls carried out by clamping ledges or pressure plates
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Membrane type solar heat collector - uses sickle-shaped cross=section foil bag filled with heat carrying medium
DE2842832A1
Pressure-resistant insulated double-walled container for liq. or gas - comprises plastics bag liner and outer frame or sack with interposed urea!-formaldehyde or polyurethane foam packing
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Multi glazed window or wall heat flow control - involves regulator linked to enclosed sensors conveying heat and removing moisture
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Large hard foam roofing or ceiling panels - are reinforced against sagging by polyester or glass fibre fabric or steel wire embedded in resinous cement
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Solar energy heat storage system - has insulated housing with waterproof welded lining and floating cover
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Solar heat collecting panel - with biconvex lenses focused on heat conductive layer under plastics foil
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Construction beam torsional anchor system - comprises open structure with tension and compression members arranged diagonally in anchor framework
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Buckle stabilised, externally reinforced bend moment girder - has permanent multi-function formwork and hand-setting interior filling
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Axially prestressed free structural element - has loading applied at element ends to balance tensile and compressive forces
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Flexure girder for composite steel and timber structure - uses steel plugs, end supports and suspension brackets to rigidify structure
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Combined bend and tension force transfer joint - has bridging anchor units subsequently inlaid, with loops in recesses for mortar
DE2753919A1
Combined torsion moment and rear coupling anchor - has spring elements sliding along force lines between interlocked U=shaped units
