Patents Assigned to Weeding Technologies Limited
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Patent number: 10974948Abstract: A system (10) for providing a stream of water that includes a surfactant, comprising a source (14) of water, means (32) to cause water to flow along a water supply duct (34), and a venturi injector (36) within the water supply duct. The venturi injector (36) communicates with an inlet duct (77) to supply surfactant; and the system comprises a surfactant supply duct (80, 83) that communicates between the inlet duct (77) and a surfactant container (18), the surfactant supply duct comprising a first portion that incorporates an on/off valve (38) and a second portion (83) that incorporates a check valve (84) to control flow. A plurality of surfactant containers (18) may be connected to the inlet duct (77) in this way; and each surfactant container 18 may be mounted within an open-topped chamber (68) to which hot water may be provided to heat the contents of the surfactant container (18).Type: GrantFiled: December 7, 2018Date of Patent: April 13, 2021Assignee: WEEDING TECHNOLOGIES LIMITEDInventors: Franck Ernest Claude Balducchi-Prince, Charles Ralph Whitcombe
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Patent number: 9504242Abstract: An apparatus suitable for controlling vegetation which apparatus comprises a hot-liquid reservoir (28), release means (38) connected to the hot-liquid reservoir (28) and at least one nozzle (74), for applying a stream of foam that contains steam, connected to the reservoir through the release means. The apparatus includes a heating means (34) to keep the liquid hot so the pressure is above atmospheric pressure. The liquid may be pumped by a pump (36) through the hot-water reservoir (28), the water being heated on demand by heaters (34) within the reservoir (28). The apparatus is either propelled by or mounted on a vehicle; and during use of the apparatus to control vegetation the vehicle provides power (24) to the heating means.Type: GrantFiled: November 8, 2011Date of Patent: November 29, 2016Assignee: Weeding Technologies LimitedInventors: Richard Hefford Hobbs, Jason Peter Morehen, Malcolm Bruce Myers
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Patent number: 9426974Abstract: An apparatus suitable for controlling unwanted vegetation which apparatus comprises a reservoir (2), release means (6) connected to the reservoir (2), and a nozzle (10) for applying a stream of foam including steam, connected to the reservoir (2) through the release means (6). A liquid is heated in the reservoir (2) to an elevated pressure, the liquid comprising water and a surfactant, i.e. a foaming agent, and forms a foam when discharged through the nozzle (10). The foam contains steam, and is effective at killing the foliage.Type: GrantFiled: November 8, 2011Date of Patent: August 30, 2016Assignee: Weeding Technologies LimitedInventors: Richard Hobbs, Jason Morehen, Malcolm Myers
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Publication number: 20140103138Abstract: An apparatus suitable for controlling vegetation which apparatus comprises a hot-liquid reservoir (28), release means (38) connected to the hot-liquid reservoir (28) and at least one nozzle (74), for applying a stream of foam that contains steam, connected to the reservoir through the release means. The apparatus includes a heating means (34) to keep the liquid hot so the pressure is above atmospheric pressure. The liquid may be pumped by a pump (36) through the hot-water reservoir (28), the water being heated on demand by heaters (34) within the reservoir (28). The apparatus is either propelled by or mounted on a vehicle; and during use of the apparatus to control vegetation the vehicle provides power (24) to the heating means.Type: ApplicationFiled: November 8, 2011Publication date: April 17, 2014Applicant: Weeding Technologies LimitedInventors: Richard Hobbs, Jason Morehen, Malcolm Myers
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Patent number: D682988Type: GrantFiled: January 30, 2012Date of Patent: May 21, 2013Assignee: Weeding Technologies LimitedInventors: Richard Hobbs, Jason Morehen