Method for producing a solar heat collector comprising an absorber 5, a cover layer 2 and, arranged between these, a pleated, non-self-supporting convection barrier 3, these being held in predetermined positions relative to each other in a frame 1. The method entails that at least one support element is connected to the convection barrier 3 in order to maintain its pleated shape, that adhesive is ...

A substantially cylindrical bar of microporous PTFE is non-fibrillated and incorporates pores within any cylindrical surface within the bar centred about the central longitudinal axis of the bar that are of substantially uniform size and are substantially uniformly distributed within that surface. The process for producting such a bar includes the step of applying a substantially radial compressiv...

PCT No. PCT/FI87/00072 Sec. 371 Date Dec. 29, 1987 Sec. 102(e) Date Dec. 29, 1987 PCT Filed May 27, 1987 PCT Pub. No. WO87/07190 PCT Pub. Date Dec. 3, 1987.The invention relates to a procedure in car body rectifying work. In the procedure the vehicle is driven onto the rectifying table (11) of the car body rectifying unit (10) and affixed to skirt attachments (12) provided on the rectifying table....

PCT No. PCT/F187/00073 Sec. 371 Date Dec. 29, 1987 Sec. 102(e) Date Dec. 29, 1987 PCT Filed May 27, 1987 PCT Pub. No. WO87/07191 PCT Pub. Date Dec. 3, 1987.The invention relates to a car body rectifying device (10) having a frame (11), and a rectifying table (12) disposed to be movable in vertical direction relative thereto with attachments (13) on the rectifying table (12) to which the vehicle ca...

A ceramic material which comprises a composite of zirconia and O'-sialon or silicon oxynitride. The ceramic material may comprise a dispersion of zirconia in an O'-sialon matrix and such a dispersion is obtained when the amount of zirconia is from 5 to 30 volume percent, preferably 15 to 25 volume percent, based on the total volume of the composition.

A process for the preparation of agglomerates containing diperoxydodecanedioic acid and a water-impermeable material, e.g. lauric acid, which process comprises the successive steps of agitating an aqueous suspension of the peroxy acid in the presence of the water-impermeable material and above the melting point thereof, cooling the suspension of the agglomerated particles thus obtained to a temper...

A panel assembly has a pair of substantially congruent and polygonal flat panels each having a plurality of straight edges meeting at corners and respective W-section rails extending along the edges and having ends at the corners. Each rail is formed with a pair of parallel, spaced, and inwardly open rail grooves receiving the respective edges and holding the panels parallel to and spaced from eac...

A panel assembly has a pair of substantially congruent and polygonal flat panels each having a plurality of straight edges meeting at corners and respective W-section rails extending along the edges and having ends at the corners. Each rail is formed with a pair of parallel, spaced, and inwardly open rail grooves receiving the respective edges and holding the panels parallel to and spaced from eac...

A method of granulating of water soluble fertilizers which contain kieserite with a mass content of between 25 and 100% and which have primary particles within a very wide grain spectrum with a fraction of at least 20% under 0.09 mm, includes the steps of providing a granulating material including kieserite, applying to the granulated material moisturizing liquid, prior to or during applying the m...

A sledge (2) is fitted in two or more guides (2') on which its low friction parts run. On the underside of the four-sided lower part (1) of the structure are friction cushions (3) which enable the device to be fitted on a table top (20). To increase retention, a stop edge (21) is fitted on the incorporated break pulley (10) which is fixed in the central parts of the underside and the sledge. A mar...

The radiation unit (1) is insulated on the surfaces which do not face the reflector (2), and is heated by an electrical element in the form of a surface-resistive foil. Apart from the main reflector, a further such unit (5) is located in the radiation path The second reflector is flat and is so positioned that, e.g., where shooting practice is taking place towards the infra-red radiation unit, the...

Method for producing a solar heat collector comprising an absorber 5, a cover layer 2 and, arranged between these, a pleated, non-self-supporting convection barrier 3, these being held in predetermined positions relative to each other in a frame 1. The method entails that at least one support element is connected to the convection barrier 3 in order to maintain its pleated shape, that adhesive is ...