Fitt
Andrew J. Fitt, Cambridge GB
Patent application number | Description | Published |
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20100057407 | SYSTEM AND METHOD FOR A SPATIAL INDEX - A system, method, and computer program for creating an index structure for spatial data, comprising representing a product structure by a network of nodes and edges; setting a local geometric bound for each of said network nodes; propagating a cumulative geometric bound of said local geometric bounds along each of said network edges; and simplifying said cumulative geometric bound at each of said network node during said propagation; whereby a geometric bound of each network node forms a spatial index geometric bound for a matching data model object and appropriate means and computer-readable instructions. | 03-04-2010 |
20100057729 | System, Method, and Computer Program Product for a Geometric Search of a Configurable Product Structure - A method for searching a bill of materials (BOM) in a data processing system, a data processing system configured to perform a corresponding method, and a computer program product encoded with instructions for performing the method. The method includes retrieving BOM data in a data processing system, and forming a wavefront queue of a plurality of proto lines corresponding to the BOM data. The method also includes determining the cumulative geometric bounds of multiple ones of the plurality of proto lines and performing a geometric bounds test on the cumulative geometric bounds of multiple ones of the plurality of proto lines. The method also includes producing a BOM line to each proto line that passes the geometric bounds test, and adding the produced BOM lines to a candidate results list stored in the data processing system. | 03-04-2010 |
Jeffrey M. Fitt, Centreville, VA US
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20090029846 | HF alkylation process with acid regeneration - The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, comprising HF acid, water and some stripping medium is distilled in a batch or continuous type operation to drive off the HF acid (along with stripping medium) and the vapor is returned to the regenerator-stripper vessel. The distillation of the sidedraw liquid is continued until the composition of the liquid attains the azeotropic value or as near to that value as desired. The azeotrope, comprising water and acid can then be dropped out of the distillation vessel for disposal by neutralization in the conventional way. | 01-29-2009 |
20090221863 | HF akylation process - An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation of a light olefin with an isoparaffin in the presence of hydrogen fluoride as an alkylation catalyst, in which the content of organic fluorides in the alkylation product stream is reduced by recontact with additional HF alkylation acid after which the hydrocarbon phase and the denser acid-containing phase are separated in a hydrocyclone. The use of the hydrocyclone enables the acid inventory of the unit to be significantly reduced which still achieving satisfactory removal of the unwanted fluoride by-products. | 09-03-2009 |
20150198550 | HF ALKYLATION PROCESS - An HF olefin/isoparaffin alkylation process is carried out in an alkylation unit with a settling vessel in which the alkylate product is separated from the HF acid catalyst containing water and acid soluble oil (ASO). The density of the liquids in the settling vessel is measured at different levels by means of a nuclear density profile analyzer. The acid strength of the acid phase is determined from the density measurement and an optional temperature measurement. The proportion of water in the acid phase may also be measured separately by measurement of its electrical conductivity to determine the respective contributions of the water and the ASO to the density of the HF acid phase. | 07-16-2015 |
Jeffrey M. Fitt, Centerville, VA US
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20150329441 | Operation of Modified HF Alkylation Unit - An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation in an HF alkylation unit of a light olefin reactant with an isoparaffin reactant in the presence of a hydrogen fluoride/sulfolane alkylation catalyst mixture in which fresh sulfolane feed having a Total Acid Number (TAN, ASTM D974) not more than 2 mq./L and optimally not more than 1 meq./L. is added to the hydrogen fluoride/sulfolane alkylation catalyst circulating in the unit. Control over the acidic components of the sulfolane feed is appropriately maintained by monitoring and pretreatment with an ion exchange resin to remove acidic components from the feed. | 11-19-2015 |
Jonathan Fitt, Cambridgeshire GB
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20090153926 | Hologram Imaging Techniques And Holograms - This invention relates to improved techniques for reading holograms, in particular volume reflection holograms, and to improved security documents incorporating volume reflection holograms. | 06-18-2009 |
Matthew P. Fitt, Norfolk GB
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20140208770 | COMPONENT HAVING INSERT FOR RECEIVING THREADED FASTENERS - A component formed of a plastic matrix composite material is provided. The component has a metal liner which is fixed in a correspondingly shaped recess formed in the composite material. The liner has a threaded bore into which is screwed an externally threaded, hollow cylindrical, metal insert. The insert has an internal thread for receiving threaded fasteners. The mouth of the bore has engagement formations which engage with the insert to prevent rotation of the insert in the bore, an adjacent part of the insert being plastically deformed to engage with the engagement formations after being screwed into the bore. | 07-31-2014 |
Matthew Peter Fitt, Norfolk GB
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20130161052 | ELECTRICAL CONNECTORS - An electrical raft ( | 06-27-2013 |
20130189868 | ELECTRICAL CONNECTORS - The present invention provides an electrical raft comprising a rigid material having multiple electrical conductors embedded therein. The electrical raft comprises an electrical connector having a first set of electrical contacts connected to at least one of the electrical conductors, a second set of electrical contacts for electrical connection to another component, and a housing having a first end and a second end. The first set of electrical contacts is at the first end and the second set of electrical contacts is at the second end. The first end of the housing is at least partly embedded in the rigid material, and the second end of the housing is accessible from outside the electrical raft, allowing the electrical raft to be electrically connected to said other component. The electrical connector has a back-shell which sealingly encloses the first end of the housing to prevent ingress of contaminants into the connector. | 07-25-2013 |
Matthew Peter Fitt, Attleborough GB
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20140325994 | ELECTRICAL CONNECTORS - An electrical raft is provided comprising a rigid material having multiple electrical conductors embedded therein. An electrical connector is provided to the raft that has a back-shell which is embedded in the rigid material and which joins to a connector body to enclose a first end of a housing of the connector body. The housing also has a second end at which electrical contacts are provided for connection to another component. The connector body is detachable from the back-shell to electrically disconnect it from the embedded electrical conductors and allow removal of the connector body from the electrical raft. In this way, the connector body may be readily removed, for example for upgrade or repair, whilst retaining a robust and reliable connection. | 11-06-2014 |