Patent application number | Description | Published |
20080282619 | CUTTING ELEMENT - A method of manufacturing a tool component, which is typically a cutting element or a gauge stone in a rotary drill bit, including a layer of ultra-hard abrasive material bonded to a substrate, the layer of ultra-hard abrasive material comprising a pair of opposed end surfaces, an upper surface defined between the end surfaces, and at least one curved and tapered cutting edge defined at the intersection of the respective end surfaces and the upper surface. The respective cutting edges of the tool component and the respective end surfaces leading to the cutting edges are generally wedge-shaped, the upper surface of the layer following generally the same or a similar profile, at least in the region of the cutting edges. | 11-20-2008 |
20100043302 | ABRASIVE COMPACTS - An abrasive compact having at least a tri-modal particle size distribution, and a binder phase, define a plurality of interstices. The binder phase is distributed in the interstices to form binder pools that correspond substantially in average size to that of an ultrahard polycrystalline composite material having a monomodal particle size distribution and substantially the same overall average particle grain size. | 02-25-2010 |
20110303467 | POLYCRYSTALLINE DIAMOND ABRASIVE ELEMENTS - A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The non-planar interface typically has a crucifonn configuration. The polycrystalline diamond has a high wear-resistance, and has a region adjacent the working surface leanin catalysing material and a region rich in catalysing material. The region lean in catalysing material extends to a depth of 40 to 90 microns, which is much shallower than in the prior art. Notwithstanding the shallow region lean in catalysing material, the polycrystalline diamond cutters have a wear resistance, impact strength and cutter life comparable to that of prior art cutters, but requiring only 20% of the treatment times of the prior art cutters. | 12-15-2011 |
20120080230 | BEARINGS FOR DOWNHOLE TOOLS, DOWNHOLE TOOLS INCORPORATING SUCH BEARINGS, AND METHODS OF COOLING SUCH BEARINGS - Bearings for downhole tools including a first bearing member and a second bearing member, at least one of the first and second bearing members having a channel formed therein. Methods of cooling bearings of downhole tools comprise flowing a fluid within a channel formed in at least one bearing member. Heat is transferred from at least the at least one bearing member to the fluid. The fluid is flowed away from the at least one bearing member. | 04-05-2012 |
20130199693 | WEAR PART - A tool component comprising a wear part covered at least in part by a connection member, the wear part having a specified hardness and the connection member being a metal or alloy, and the wear part comprising a surface that includes one or more depressions or projections therefrom, and the connection member having been pressed against that surface so that at least the surface of the connection member that faces the wear part surface follows the profile of the wear part, whereby relative movement between the wear part and connection member is substantially prevented. The metal or alloy connection member may be readily attached to a tool body for example by brazing of the like. The wear part may comprise a material that is not readily brazeable, for example a ceramic material or a cermet or a superhard material or a composite of such materials. | 08-08-2013 |
20140007519 | COMPOSITE PART INCLUDING A CUTTING ELEMENT - A composite part comprises (a) a cutting element which comprises super-hard cutting table and a substrate and (b) a metal or alloy layer. Respective first surfaces of the superhard cutting table and the substrate are joined to each other, and the metal or alloy layer is located adjacent to second surfaces of the cutting table and the substrate so as to surround the joined first surfaces of the cutting table and the substrate. The metal or alloy layer and the second surfaces of one or both of the cutting table and substrate are co-operatively shaped substantially to prevent relative movement therebetween. The metal or alloy layer may be used to secure the cutting element within a tool body, and advantageously provides a convenient means to effect that securement, while simultaneously protecting the join between the superhard cutting table and the substrate during the process of securement of the cutting element to the tool body. | 01-09-2014 |
Patent application number | Description | Published |
20130282351 | METHOD AND TOOTH RESTORATION DETERMINATION SYSTEM FOR DETERMINING TOOTH RESTORATIONS - The invention describes a method of determining virtual tooth restorations on the basis of scan data (D) of oral structures, wherein a model database (DB) comprising a number of parameterized tooth models for each of several tooth types is used, whereby the parameterization is carried out on the basis of model parameters comprising position parameters and/or shape parameters and whereby each tooth model (M) is linked with a number of tooth models (M) of the same tooth type, and wherein, for each desired tooth type, an optimal tooth model (M) in the model database (DB) is determined by means of an iterative method in which initially at least one start tooth model (M) of the desired tooth type is selected from the model database (DB), and subsequently, commencing with this start tooth model (M), in each iteration step (S) a tooth model (M) is tested with regard to a quality value, wherein for individualization, the tooth model (M) currently in test is adjusted to the scan data (D) by varying model parameters and a quality value is computed for this individualization. Furthermore, at least one tooth model (M) linked with the tooth model (M) in test is also, for individualization, adjusted to the scan data (D) by variation of model parameters and a further quality value is computed for this individualization. On the basis of the computed quality values, a new tooth model (M) in test of the desired tooth type is selected if necessary from the model database (DB) for the next iteration step (S). Iteration is interrupted upon reaching a quality criterion, and finally at least one virtual tooth restoration is determined from among the optimal tooth models (M) and scan data (D). The invention also describes a method of generating a model database (DB) for use in such a method, a method of manufacturing or selecting a tooth restoration part, and a tooth restoration determination system ( | 10-24-2013 |
20130308843 | METHOD AND ANALYSIS SYSTEM FOR THE GEOMETRICAL ANALYSIS OF SCAN DATA FROM ORAL STRUCTURES - The invention describes a method for the geometrical analysis of scan data (D) from oral structures, comprising the steps of selecting a number of parameterized tooth models (M) of desired tooth types according to the scan data (D) to be analyzed, whereby the parameterization is performed on the basis of model parameters comprising position parameters and/or shape parameters and line parameters, and whereby each tooth model (M) comprises at least one boundary line (LS, LP) whose path is defined by line parameters and which divides a tooth model (M) in at least one active adjustment area (AA) and at least one inactive adjustment area (AI), adjusting the tooth models (M) and their boundary lines (LS, LP) to the scan data (D) for individualization, whereby the individualization is performed by variation of model parameters, and whereby the active adjustment areas (AA) of the tooth models (M) are weighted more than the inactive adjustment areas (AI), segmenting the scan data (D) on the basis of the individualized tooth models (M) and their individualized boundary lines (LS, LP) and/or determining at least one boundary line (LS, LP) in the scan data (D). The invention further describes a method of generating a model database (DB) for use in such a method; and an analysis system ( | 11-21-2013 |
Patent application number | Description | Published |
20110028508 | NOVEL PROCESS FOR THE PREPARATION OF SCOPINE ESTERS - The present invention relates to novel processes for the preparation of scopine esters and their quaternary salts. In particular, the present invention relates to a process for the preparation of tiotropium bromide, pharmaceutical compositions comprising tiotropium bromide and the use of such compositions in the treatment of respiratory disorders. | 02-03-2011 |
20110184071 | PROCESS FOR THE PREPARATION OF AMINES - The present invention relates to an improved process for the preparation of rasagiline (1) and its pharmaceutically acceptable salts. In particular it relates to a process for preparing rasagiline (1) and its salts substantially free from impurities. | 07-28-2011 |
20110251254 | NOVEL SALT OF TEGASEROD - The present invention relates to a novel salt of tegaserod, namely tegaserod suberate, and to processes for the preparation thereof. The invention also relates to crystalline forms of the novel salt and to pharmaceutical compositions comprising the novel salt. Further, the invention relates to uses of said compositions in treating patients suffering from gastrointestinal disorders. | 10-13-2011 |
20110263719 | POLYMORPHIC FORM OF RASAGILINE MESYLATE - The present invention relates to a novel crystalline form of rasagiline mesylate and a pure form of rasagiline mesylate and processes for their preparation. Further, the invention relates to pharmaceutical compositions comprising said forms and use of said compositions in the treatment of patients suffering from Parkinson's Disease, dementia, Alzheimer's Disease, depression, hyperactive syndrome, stroke, brain ischemia, neurotrauma, schizophrenia and multiple sclerosis. | 10-27-2011 |
20130303741 | PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY PURE AMINES - The present invention relates to an improved process for the preparation of (R)-1-aminoindan (2), rasagiline (1) and pharmaceutically acceptable salts of rasagiline. | 11-14-2013 |