Patents by Inventor Peter Gates
Peter Gates has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240024893Abstract: An apparatus for a spiral separator, for provision operatively intermediate upstream and downstream spiral trough parts of the spiral separator, including a slurry receiving region for receiving a mineral slurry flow from said upstream spiral trough part of the spiral separator; a splitter for splitting the mineral slurry flow into a concentrate part, a semi-concentrate part and a remainder part; a mixing region for mixing a more fluid radially more outward part of the remainder part with a less fluid radially more inward part of the remainder part, to provide a mixed remainder part for feeding onto the downstream spiral trough part; and a semi-concentrate bypass channel for conveying the semi-concentrate part towards the downstream spiral trough part, such that the semi-concentrate component bypasses and is segregated from the mixing region.Type: ApplicationFiled: August 14, 2021Publication date: January 25, 2024Inventor: Peter GATES
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Patent number: 11865548Abstract: A spiral separator for separating more-desired material from less-desired material has a feed arrangement for feeding a slurry of mixed more-desired material and less-desired material, a spiral trough, and a splitting arrangement for off-take of a concentrate band of more desired material, and the spiral trough is configured to provide an effective cross-trough floor slope of less than 8 degrees to horizontal in a turn immediately upstream of the splitting arrangement. The separator may be a multi-stage separator and include a slurry preparation apparatus between each pair of stages.Type: GrantFiled: December 19, 2019Date of Patent: January 9, 2024Assignee: OREKINETICS INVESTMENTS PTY LTDInventors: Ezra McKenzie, Peter Gates
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Publication number: 20220168749Abstract: A spiral separator for separating more-desired material from less-desired material has a feed arrangement for feeding a slurry of mixed more-desired material and less-desired material, a spiral trough, and a splitting arrangement for off-take of a concentrate band of more desired material, and the spiral trough is configured to provide an effective cross-trough floor slope of less than 8 degrees to horizontal in a turn immediately upstream of the splitting arrangement. The separator may be a multi-stage separator and include a slurry preparation apparatus between each pair of stages.Type: ApplicationFiled: December 19, 2019Publication date: June 2, 2022Inventors: Ezra MCKENZIE, Peter GATES
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Patent number: 8905804Abstract: The present invention is directed to a replaceable flotation device for providing buoyancy to a flexible hose. The device generally comprises two or more buoyancy members for surrounding said hose, said buoyancy members are operably connected as an assembly which can be easily replaced or repositioned along a length of the hose.Type: GrantFiled: September 29, 2010Date of Patent: December 9, 2014Inventors: Graham George Bubb, Peter Gates Morin
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Publication number: 20110079312Abstract: The present invention is directed to a replaceable flotation device for providing buoyancy to a flexible hose. The device generally comprises two or more buoyancy members for surrounding said hose, said buoyancy members are operably connected as an assembly which can be easily replaced or repositioned along a length of the hose.Type: ApplicationFiled: September 29, 2010Publication date: April 7, 2011Inventors: Graham George Bubb, Peter Gates Morin
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Publication number: 20070151455Abstract: A cleaning device for cleaning an ionising electrode in an electrostatic separator, the device comprising a cleaner for removing dust and other particulate matter from at least a portion of the electrode.Type: ApplicationFiled: July 6, 2006Publication date: July 5, 2007Inventor: Peter Gates
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Publication number: 20060081507Abstract: An apparatus for the electrostatic separation of a mixture of particles that exhibit difference in electrical conductivity comprising: a rotating roll with a conductive surface to which conducting particles lose their charge; feeding means for feeding the mixture of particles onto the conductive surface; an ionising electrode for ionising individual particles in the mixture of particles; a first static electrode having the same polarity as the ionising electrode and which serves to generate a static electric field, the first static electrode being located sufficiently close to the ionising electrode that the static field acts on the particles immediately after they are ionised; and splitter comprising a leading edge over which a conductor fraction stream flung from the rotating roll following charge decay in these particles passes, wherein the leading edge of the splitter is positioned beneath the first static electrode so that the conductor fraction remains under the influence of the static electric field asType: ApplicationFiled: October 7, 2005Publication date: April 20, 2006Inventor: Peter Gates
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Publication number: 20050061713Abstract: Apparatus for the electrostatic separation of a mixture of particles that exhibit difference in electrical conductivity, comprising: a conductive surface to which conducting particles lose their charge; feeding means for feeding the mixture of particles onto the conductive surface; an ionising electrode for ionising individual particles in the mixture of particles; and a first static electrode having the same polarity as the ionising electrode and which serves to generate a static electric field, the first static electrode being located sufficiently close to the ionising electrode that the static electric field acts continuously on the particles as they are ionised; wherein conducting particles are separated from non-conducting particles on the basis of their different retained charge after a period of contact with the conductive surface.Type: ApplicationFiled: July 27, 2001Publication date: March 24, 2005Inventor: Peter Gates
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Patent number: 6383575Abstract: A method for metallising solid substrates involves the use of non-equilibrium plasma treatment of a supported metal precursor layer. This technique can be used to make pure metal or alloy coatings. An oxidising plasma pre-treatment step of the supported metal precursor layer, or the incorporation of a plasma polymer coupling layer prior to metallisation, can result in improved adhesion. The method can be applied to the preparation of lithographic printing plate precursors.Type: GrantFiled: February 3, 2000Date of Patent: May 7, 2002Assignee: Agfa-GevaertInventors: Jas Pal Singh Badyal, Jonathan Mark Crowther, Allen Peter Gates
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Patent number: 6268110Abstract: A lithographic printing plate precursor comprises a grained and anodised aluminium substrate coated with a metallic layer, preferably a silver layer, on top of which is applied a layer of an oleophilic resin. Imagewise exposure of the precursor by means of a high intensity laser beam allows for the direct provision of press ready plates showing increased cleanliness in background areas and providing excellent start-up properties on press, high image quality and improved press durability, without the requirement for the use of intermediate film and developer chemistry, or the need for any post-exposure processing. Lower levels of metal deposition on the substrate surface result in the plate precursors showing enhanced sensitivity on exposure, whereupon removal of the metallic layer occurs in the exposed areas.Type: GrantFiled: February 7, 2000Date of Patent: July 31, 2001Assignee: Agfa-GevaertInventors: Allen Peter Gates, Philip John Watkiss, Fredrick Claus Zumsteg, Jr.
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Patent number: 6187507Abstract: The invention provides a lithographic printing plate precursor comprising a grained and anodized aluminium substrate having coated thereon a silver halide emulsion layer, the back surface of said substrate being coated with an inert coating which does not chemically or physically interact with an adjacent silver halide layer when two plates are placed in front to back contact. Fogging of the silver halide layer is avoided and the use of the back coating eliminates the requirement for the use of tissue interleaving when wrapping and packing the lithographic printing plate precursors.Type: GrantFiled: December 15, 1999Date of Patent: February 13, 2001Assignee: Agfa-Gevaert, N.VInventors: Allen Peter Gates, Jonathan William Goodin, John Michael Kitteridge, Malcolm James Mallison, Roland Robinson, Philip John Watkiss
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Patent number: 5948599Abstract: A method of image formation which comprises (a) providing a radiation sensitive plate comprising a substrate and a coating containing a heat softenable disperse phase, an aqueous soluble or swellable continuous phase and a radiation absorbing substance, (b) image-wise exposing the plate to at least partially coalesce the particles of the disperse phase in the image areas, (c) developing the image-wise exposed plate to remove the coating in the unexposed areas, and (d) heating the developed plate or subjecting it to irradiation to effect insolubilization of the image. Good quality images of high durability are obtained.Type: GrantFiled: January 26, 1996Date of Patent: September 7, 1999Inventors: Alastair Lamont Gardner, Allen Peter Gates, Andrew Ernest Matthews, Jacek Paul Obuchowicz
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Patent number: 5650258Abstract: Laminates of aluminum and plastic form the substrate of printing plate precursors that are suitable for imaging in conventional roll-fed imagesetters or phototypesetters.Type: GrantFiled: June 30, 1995Date of Patent: July 22, 1997Inventors: Stephen Bernard Doyle, Allen Peter Gates, John Michael Kitteridge, Philip John Watkiss
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Patent number: 4117039Abstract: A light sensitive material suitable for coating onto a support to produce a light sensitive plate for use in, for example, the manufacture of a printing plate comprises groups of the formula: ##STR1## attached to carbon atoms of a polymer, wherein --Z-- is --o-- or ##STR2## or ##STR3## wherein R.sub.5 represents a hydrogen atom or an alkyl group; R is an aromatic radical; a is zero or unity; R.sub.1, R.sub.2 and R.sub.3 are hydrogen atoms, halogen atoms, cyano groups, or specified aliphatic or aromatic groups; X is a deactivating group; R.sub.4 is a hydrogen atom, a carboxyl group, a cyano group or a specified aliphatic or aromatic group; and Ph is a phenyl group. The material may be produced by reacting a polymer containing epoxide groups, hydroxyl groups, or primary and/or secondary amino groups with the halosulphonyl group of a compound having the formula: ##STR4## wherein R, R.sub.1, R.sub.2 R.sub.3, and a having the above meanings, wherein X has the above meaning or is a halosulphonyl group and R.sub.Type: GrantFiled: December 1, 1975Date of Patent: September 26, 1978Assignee: Vickers LimitedInventors: Allen Peter Gates, Allan Saunderson