WO/1994/012576 ORGANIC MATERIAL FORMED FROM COIR DUST||WO||09.06.1994|
||PCT/LK1993/000001||NANDADASA, Puwakdandawe, Narayana ||NANDADASA, Puwakdandawe, Narayana |
An organic material comprises one of the following residue materials: sawdust, wood chips, bark, wood waste, charcoal, peat, shells, olive residues, coir dust, coffee hulls, coconut fibre, sunflower husks, cottonseed husks, hazelnut shells, bagasse, hemp, straw, flax, plant stalks, paper waste, malt sprouts, rice husks or municipal waste. Coir dust is preferred. The material may be formed into packaging members or pellets, for use as a packaging material. The packaging material is formed either by mixing the residue with a binding agent or by providing the residue between layers which act as skins, or by adhesion to a substrate. The material may be biodegradable and/or used as a fertiliser and/or a growing medium.
WO/1992/016424 DEVICE TO CLOSE SACKS||WO||01.10.1992|
||PCT/LK1992/000001||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A sack closure device which includes a first member (1) having a longitudinally extending recess, a second member (4) receivable in the recess, and releasable clamping means (8) to hold the members together. One of the members can be pre-attached to the external surface of a sack neck i.e. prior to the sack being filled. In an alternative embodiment, the members can be retained about the neck of a (filled) sack by a strap forming the clamping means i.e. with a neck part held between the members; the device(s) components can then be stored separately from the sack(s), as can the device components.
WO/1990/005624 DIAMOND SAWING PROCESS||WO||31.05.1990|
||PCT/LK1989/000002||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A diamond sawing process, in which guidelines on the outer surface of a rough diamond are used for the sawing of up to six pyramid shapes (340) as fragments from a particular piece of tetrahedron shaped (sawable) diamond, whereby the maximum weight of a polished round brilliant cut (or other round cut diamond) is obtained from a particular rough diamond, together with the fragments. A marking pen or equivalent is held parallel to the centre line of the diamond (300), and adjusted so that its point (330) touches the shortest side of the diamond; when the diamond is rotated relative to the point, a circle is marked which represents the maximum round diameter that can be cut for that diamond. The pen crosses the ridges (412, 414, 416, 418) of the diamond, and these crossing points define the starting point of sawing. In a further refinement, the marker pen and its point can also be used to mark the maximum height of the fashioned diamond, these marks being placed on the ridges, and a pyramid shape cut from one or both of the top and bottom (culet) of the rough diamond. Preferably, a laser can be used both to mark and saw the diamond in one operation, thereby saving time and the possible need for readjustment or resetting of the diamond on its fixing.
WO/1990/002828 HOLLOW JEWELLERY OBJECTS AND METHOD||WO||22.03.1990|
||PCT/LK1989/000001||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A method of fabricating a hollow jewellery object in which an electrically conductive coating is applied to part (18) of a non-conductive mandrel or mould (10), the coated mandrel being presented for a first dip into an electrolyte containing ions of a precious metal e.g. gold so that the said parts of the mandrel are coated with an initial deposit; the mandrel is then removed from the electrolyte and the previously uncoated portions (24) coated before the mould is again dipped in the or a different electrolyte to form an outer shell integral with the internal ribs (28) or points formed during the first dip. Thus the hollow jewellery object is internally strengthened by the ribs (28), though in an alternative embodiment the ribs can be replaced by individual upstanding projections in bas relief if these conform to the external profile required for the jewellery object. The invention also includes a hollow jewellery object formed by the method according to the invention.
WO/1989/004913 POWER GENERATION PLANT||WO||01.06.1989|
||PCT/LK1988/000004||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A steam plant which includes a steam driven turbine (237), and a condenser (254) in which the steam exhausted from the turbine is condensed, the condenser (254) being at least 200 metres above the level of the turbine (237) and preferably several kilometres above the turbine level. The turbine (237) is connected to the condenser (254) by a vacuum tight shaft (252) adapted to convey the spent steam upwardly to the condenser at vapour speeds up to 0.75 of the speed of sound in that vapour. The condensate is continually withdrawn from the condenser (254) both to maintain the vacuum and to stimulate continued mass transfer upwardly of the spent steam at high speed.
WO/1989/003100 PERSONAL IDENTIFICATION SYSTEM AND METHOD||WO||06.04.1989|
||PCT/LK1988/000002||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A personal identification system wherein an encoded version of the user's fingerprint is reprint and recorded on an identification card or device; this encoded version is security machine-read and directly compared at the time of use with an impression of the fingerprint on a different but designated area of the card, or alternatively on a designated area of the machine-reader or a separate card, the comparison being done on a one-to-one basis so as to reduce the need for a large memory or storage capacity for fingerprint records on the card or in the security machine-reader. The personal identification system can be used with passports, travellers cheques, credit cards, cheque cards and the like.
WO/1989/001597 BAROMETRIC DIRECT-CONTACT CONDENSER||WO||23.02.1989|
||PCT/LK1988/000001||SENANAYAKE, Daya, Ranjit ||SENANAYAKE, Daya, Ranjit |
A barometric direct-contact steam condenser (10) in which a stream of vapour and formed condensate contacts a free surface of the condensate, which surface is preferentially removed, preferably continuously, so as to provide a cooler surface against which and/or as a result of which more vapour can condense.
WO/1988/007810 A THREE DIMENSIONAL CONSTRUCTION SYSTEM||WO||06.10.1988|
||PCT/LK1987/000002||LOGSTRUP, Erik ||LOGSTRUP, Erik |
This invention is a part of the three dimensional construction system based on a basic module wherein horizontal, vertical and longitudinal sides have equal measurement, the center of each square face being the fixing point. The heavy duty corner bars together with the cross-bars which make the basic structure are used for both depth and width to carry heavy loads. The construction elements consist of multiplication of the basic module allowing building of complicated constructions by adding modules or half modules and without deviating form the modular concept.
WO/1988/005253 A THREE DIMENSIONAL CONSTRUCTION SYSTEM||WO||14.07.1988|
||PCT/LK1987/000001||LOGSTRUP, Erik ||LOGSTRUP, Erik |
A three dimensional construction system based on a basic module wherein horizontal, vertical and longitudinal sides have equal measurements, the centre of each square face being the fixing point. (Figure 5). Cross and corner bars (Figures 1 & 2) which make the basic structure are used for both depth and width. The sides can be covered as required. The construction elements consist of multiplications of the basic module, allowing building of complicated constructions by adding modules and without deviating from the modular concept (Figure 3). Fittings can be attached to mounting plates in any position within the modular system, giving true 3D expandability (Figure 6). This system can be used for various applications with suitable dimensions selected for the basic module. The doors have a gasket with a profile incorporating a groove fitting exactly around the edge of the metal (Figure 7).
WO/1986/005435 CLEAVING MACHINE||WO||25.09.1986|
||PCT/LK1986/000001||SENANAYAKE, Daya, Ranjith ||SENANAYAKE, Daya, Ranjith |
The invention relates primarily to the field of grooving and cleaving precious stones and diamonds and all other types of hard and or brittle materials. The technical problem is that in making a groove on the stone or diamond or other piece of material to be cleaved in the present hand processes or other processes used it is extremely difficult and it takes a long time to make the groove in the correct place. It is also difficult and time consuming to make a narrow thin groove. The problem is solved in this invention by mounting the first stone or diamond or piece of material to be grooved and cleaved on a claw holder or other type of holder which is set on an adjustable device. The second stone or diamond or piece of material is mounted on a second holder with a thin edge standing out. This thin edge is then moved and adjusted to touch the first stone exactly at the point to be grooved and cleaved. By this means the groove is made only at the required position and because a thin edge (commonly found in sawn diamonds or stones is used) a narrow groove results and this leads to a high quality cleaving. The main uses of the invention are in increasing the production output of stone or diamond cleaving operations.