Patents by Inventor John Dobson
John Dobson 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: 20160256024Abstract: A suction nozzle for a vacuum cleaner, the suction nozzle comprising a suction chamber, an outlet duct extending from the suction chamber for connection to a vacuum source on the vacuum cleaner, a soleplate for supporting the nozzle on a carpeted floor, a suction opening in the soleplate which opens into the suction chamber, and a valve which can be manually operated to open or close a bleed path through the front of the nozzle into the suction chamber, the bleed path being defined by a channel formed on the underside of the soleplate which is fluidly connected to the outlet duct, the channel terminating in an entrance slot on the front of the nozzle for admitting debris as the suction nozzle is pushed in a forward direction, the channel defining a throat downstream of the entrance slot, the throat having a smaller cross-sectional area than the entrance slot.Type: ApplicationFiled: March 4, 2016Publication date: September 8, 2016Applicant: Dyson Technology LimitedInventors: Reuben Thomas Daniel Lawrence KETTLE AIERS, Matthew John DOBSON, Stephen Robert DIMBYLOW
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Publication number: 20150216381Abstract: The invention relates to a cleaner-head for a vacuum cleaner. The cleaner-head has a housing, this housing being connected to a hinged soleplate assembly which can be opened and closed to provide access to the inside of the housing. In accordance with the invention, the soleplate assembly is a clip-on assembly which a user can manually un-clip from the housing, as required, to detach the soleplate assembly for separate cleaning or replacement.Type: ApplicationFiled: September 29, 2013Publication date: August 6, 2015Inventors: Stuart Lloyd Genn, Matthew John Dobson
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Publication number: 20150158999Abstract: Embodiments of the present disclosure are directed to water-resistant products which contain a wax emulsion, or silicones, or siliconates, or fluorinated compounds, or stearates, or combinations thereof. In some embodiments, the compound can be used to provide enhanced moisture resistance to joints, or holes such as screw holes or nail holes, in a wallboard.Type: ApplicationFiled: May 15, 2014Publication date: June 11, 2015Applicant: HENRY COMPANY LLCInventors: Amba Ayambem, Alex Gonzalez, John Dobson
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Publication number: 20150159017Abstract: Embodiments of the present disclosure are directed to water-resistant products which contain a wax emulsion, or silicones, or siliconates, or fluorinated compounds, or stearates, or combinations thereof. In some embodiments, the compound can be used to provide enhanced moisture resistance to joints, or holes such as screw holes or nail holes, in a wallboard.Type: ApplicationFiled: December 11, 2014Publication date: June 11, 2015Inventors: Amba Ayambem, Alex Gonzalez, John Dobson
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Patent number: 9015902Abstract: The invention relates to a cleaner head for a vacuum cleaner. The cleaner head has a housing and a soleplate assembly hingedly connected to the housing. The soleplate assembly and the housing are held closed by a releasable catch, which is pivotally mounted to one of the housing or the soleplate for rotation between a locking position and a release position. In accordance with the invention, the catch incorporates a first cam, which cam engages the other of the soleplate or the housing as the catch is rotated from the locking position towards the release position, in order to force apart the housing and the soleplate.Type: GrantFiled: September 29, 2013Date of Patent: April 28, 2015Assignee: Dyson Technology LimitedInventors: Stuart Lloyd Genn, Matthew John Dobson
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Publication number: 20140230186Abstract: The invention relates to a cleaner head for a vacuum cleaner. The cleaner head has a housing and a soleplate assembly hingedly connected to the housing. The soleplate assembly and the housing are held closed by a releasable catch, which is pivotally mounted to one of the housing or the soleplate for rotation between a locking position and a release position. In accordance with the invention, the catch incorporates a first cam, which cam engages the other of the soleplate or the housing as the catch is rotated from the locking position towards the release position, in order to force apart the housing and the soleplate.Type: ApplicationFiled: September 29, 2013Publication date: August 21, 2014Applicant: DYSON TECHNOLOGY LIMITEDInventors: Stuart Lloyd Genn, Matthew John Dobson
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Patent number: 8739361Abstract: A vacuum cleaning head includes a housing having a suction opening for admitting an air flow to the head, an agitator for agitating a surface to be cleaned, the agitator having an active state and an inactive state, a duct for receiving the air flow from the housing, and a control assembly for controlling the state of the agitator.Type: GrantFiled: February 22, 2011Date of Patent: June 3, 2014Assignee: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson, Spencer James Robert Arthey, Charles Gareth Owen
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Patent number: 8732902Abstract: A vacuum cleaning head includes a pressure chamber having a first chamber section and a second chamber section which is moveable relative to the first chamber section in response to a pressure differential thereacross from a first position to a second position, and a control mechanism located within the pressure chamber. The control mechanism has a first state for inhibiting the movement of the second chamber section in response to said pressure differential beyond a third position intermediate the first and second positions, and a second state for allowing the second chamber section to move in response to said pressure differential to the second position. The control mechanism is arranged to change between the first and second states in response to a movement of the second chamber section from the third position.Type: GrantFiled: February 22, 2011Date of Patent: May 27, 2014Assignee: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson
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Patent number: 8650709Abstract: A handle for a wand of a vacuum cleaning appliance includes a handgrip portion and a conduit for receiving an air flow. The handle includes an aperture for admitting ambient air into the conduit. A first valve occludes a first portion of the aperture, and a second valve occludes a second portion of the aperture. A control mechanism moves the first and second valves away from the aperture to admit ambient air into the conduit. To vary the air flow into the conduit, the control mechanism includes a first manually operable actuator located on the handle for moving both of the first and second valves away from the aperture, and a second manually operable actuator is located on the handle for moving only one of the first and second valves away from its respective portion of the aperture.Type: GrantFiled: February 22, 2011Date of Patent: February 18, 2014Assignee: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson, Sean Ventress
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Patent number: 8567003Abstract: A vacuum cleaning appliance includes a vacuum cleaning head having a suction opening, the head having a first state and a second state, a fan unit for drawing an air flow through the suction opening, and a control assembly for controlling the state of the head.Type: GrantFiled: February 22, 2011Date of Patent: October 29, 2013Assignee: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson, Spencer James Robert Arthey, Charles Gareth Owen
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Publication number: 20110214249Abstract: A vacuum cleaning appliance includes a vacuum cleaning head having a suction opening, the head having a first state and a second state, a fan unit for drawing an air flow through the suction opening, and a control assembly for controlling the state of the head.Type: ApplicationFiled: February 22, 2011Publication date: September 8, 2011Applicant: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson, Spencer James Robert Arthey, Charles Gareth Owen
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Publication number: 20110214252Abstract: A vacuum cleaning head includes a pressure chamber having a first chamber section and a second chamber section which is moveable relative to the first chamber section in response to a pressure differential thereacross from a first position to a second position, and a control mechanism located within the pressure chamber. The control mechanism has a first state for inhibiting the movement of the second chamber section in response to said pressure differential beyond a third position intermediate the first and second positions, and a second state for allowing the second chamber section to move in response to said pressure differential to the second position. The control mechanism is arranged to change between the first and second states in response to a movement of the second chamber section from the third position.Type: ApplicationFiled: February 22, 2011Publication date: September 8, 2011Applicant: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson
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Publication number: 20110214248Abstract: A vacuum cleaning head includes a housing having a suction opening for admitting an air flow to the head, an agitator for agitating a surface to be cleaned, the agitator having an active state and an inactive state, a duct for receiving the air flow from the housing, and a control assembly for controlling the state of the agitator.Type: ApplicationFiled: February 22, 2011Publication date: September 8, 2011Applicant: Dyson Technology LimitedInventors: David Andrew MCLEOD, Matthew John Dobson, Spencer James Robert Arthey, Charles Gareth Owen
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Publication number: 20110214250Abstract: A handle for a wand of a vacuum cleaning appliance includes a handgrip portion and a conduit for receiving an air flow. The handle includes an aperture for admitting ambient air into the conduit. A first valve occludes a first portion of the aperture, and a second valve occludes a second portion of the aperture. A control mechanism moves the first and second valves away from the aperture to admit ambient air into the conduit. To vary the air flow into the conduit, the control mechanism includes a first manually operable actuator located on the handle for moving both of the first and second valves away from the aperture, and a second manually operable actuator is located on the handle for moving only one of the first and second valves away from its respective portion of the aperture.Type: ApplicationFiled: February 22, 2011Publication date: September 8, 2011Applicant: Dyson Technology LimitedInventors: David Andrew McLeod, Matthew John Dobson, Sean Ventress
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Publication number: 20050252790Abstract: The invention relates to a sensor system for the identification and/or measurement of levels of target species in aqueous solution, and in particular for the identification and/or determination of levels of contaminant species such as nutrient species in the aqueous phase.Type: ApplicationFiled: March 28, 2003Publication date: November 17, 2005Inventors: John Dobson, Robert Marshall
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Patent number: 6116852Abstract: A gas turbine engine blade tip clearance control system and method is described. An annular housing is formed about an engine casing to which an annular shroud segment assembly is secured and closely spaced about blade tips of a stage of blades. The annular housing forms an air passage means communicating with the casing for directing a cooling air stream to the casing. A thermally operable passive ring valve is formed by two overlapped metal ring segments having a dissimilar coefficient of thermal expansion selected whereby to produce a radial gap between the ring segments when the valve temperature reaches a predetermined value. The radial gap admits a cooling air flow into the housing for cooling the casing and its associated shroud segment assembly to control radial growth and thereby prevent blade tip pinching.Type: GrantFiled: December 11, 1997Date of Patent: September 12, 2000Assignee: Pratt & Whitney Canada Corp.Inventors: Sylvain Pierre, Martin John Dobson
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Patent number: 5295693Abstract: A game in which an object, such as a ball, is maneuvered upon a meandering path upwardly slanting to a goal. The ball is directed along the path by a manipulating device, such as a rod. The ball is free to move laterally along an edge of the rod under the force of gravity as the rod is tilted from the horizontal, and the ball may be moved linearly (advanced or retracted) by sliding the rod forward or backward along the path.Type: GrantFiled: February 28, 1992Date of Patent: March 22, 1994Inventor: John Dobson
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Patent number: D667186Type: GrantFiled: July 19, 2011Date of Patent: September 11, 2012Assignee: Dyson LimitedInventors: Jonathan Richard Codling, Matthew John Dobson, David Andrew McLeod, James Dyson, Peter David Gammack
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Patent number: D767219Type: GrantFiled: June 20, 2014Date of Patent: September 20, 2016Assignee: Dyson Technology LimitedInventors: Stephen Robert Dimbylow, Matthew John Dobson, David Christopher James Newton, Andrew James Wills, Adam James Bates, Rob Edward Marsden, James Dyson
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Patent number: D767220Type: GrantFiled: June 20, 2014Date of Patent: September 20, 2016Assignee: Dyson Technology LimitedInventors: Stephen Robert Dimbylow, Matthew John Dobson, David Christopher James Newton, Andrew James Wills, Adam James Bates, Rob Edward Marsden, James Dyson