Patents by Inventor Michael Greenhill
Michael Greenhill 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: 20210101040Abstract: The present invention relates to aqueous compositions for suppressing fires, comprising surfactants and/or hydrotropes, particulate inorganic materials selected from the group consisting of perlite, talc, calcium carbonate, kaolin, dolomite, mica, and bentonite, and combinations thereof, and optionally one or more additives. The invention further relates to uses of such particulate inorganic materials, as well as dry precursor compositions, fire suppressing compositions, and methods of making them.Type: ApplicationFiled: April 17, 2019Publication date: April 8, 2021Inventors: Michael GREENHILL-HOOPER, Adrien BORRAS, Gilles COLLARD
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Patent number: 10351764Abstract: The present invention relates to aqueous compositions for forming a foam, comprising a surfactant and a particulate inorganic material, and optionally one or more polymers, such as soil conditioning polymers, and/or viscosity increasing polymers. The present invention further relates to the use and application of said aqueous compositions.Type: GrantFiled: January 15, 2016Date of Patent: July 16, 2019Assignee: ImerTech SASInventors: Michael Greenhill-Hooper, Gilles Collard, Stephen Johan Neethling, Pablo Rafael Brito Parada
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Publication number: 20180118621Abstract: A method for strengthening perlite microspheres may include providing a plurality of perlite microspheres, and heating the plurality of perlite microspheres at a temperature of at least about 600° C. for at least about five minutes to form strengthened perlite microspheres. A composition may include the strengthened perlite microspheres formed from the above-noted method. At least one of a drilling fluid and a well cement may include a slurry including at least one fluid, and a composition including strengthened perlite microspheres. A slurry may include at least one fluid and a plurality of perlite microspheres. The plurality of perlite microspheres may be strengthened by at least one of (1) heating the plurality of perlite microspheres at a temperature of at least about 600° C. for at least about five minutes: and (2) adding at least one metal component and at least one silicate component to the plurality of perlite microspheres.Type: ApplicationFiled: April 28, 2016Publication date: May 3, 2018Inventors: Bo WANG, Michael GREENHILL-HOOPER
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Publication number: 20180010038Abstract: The present invention relates to aqueous compositions for forming a foam, comprising a surfactant and a particulate inorganic material, and optionally one or more polymers, such as soil conditioning polymers, and/or viscosity increasing polymers. The present invention further relates to the use and application of said aqueous compositions.Type: ApplicationFiled: January 15, 2016Publication date: January 11, 2018Inventors: Michael GREENHILL-HOOPER, Gilles COLLARD, Stephen Johan NEETHLING, Pablo Rafael BRITO PARADA
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Publication number: 20170367365Abstract: A method for processing natural oil is provided. The method includes providing a natural oil to be processed, adding an inorganic particulate material to said natural oil, and processing the resulting mixture to obtain oil products with an improved yield and/or quality.Type: ApplicationFiled: December 22, 2015Publication date: December 28, 2017Inventor: Michael GREENHILL-HOOPER
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Patent number: 8727946Abstract: A spotting device for use during exercise routines is provided where a linear motor includes a forcer that travels along a magnetic shaft to provide a resistance force in response to a force generated by a weight in order to provide assistance and safety to a user performing the exercise routine.Type: GrantFiled: January 4, 2013Date of Patent: May 20, 2014Assignee: Smalley Steel Ring CompanyInventors: Michael Greenhill, Mark Greenhill, Brad Hill
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Publication number: 20130190143Abstract: A spotting device for use during exercise routines is provided where a lineal motor includes a forcer that travels along a magnetic shaft to provide a resistance force in response to a force generated by a weight in order to provide assistance and safely to a user performing the exercise routine.Type: ApplicationFiled: January 4, 2013Publication date: July 25, 2013Inventors: MICHAEL GREENHILL, Mark Greenhill, Brad Hill
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Patent number: 8475338Abstract: Exercise machines and linear motor systems for use in exercise machines are provided herein, where the linear motor provides a resistance force in response to a force generated by a user performing an exercise. The linear motor systems include a programmable logic and force generation control system, which is programmable to control the resistance provided by the linear motor.Type: GrantFiled: May 6, 2010Date of Patent: July 2, 2013Assignee: Smalley Steel Ring CompanyInventors: Michael Greenhill, Mark Greenhill, Brad Hill
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Publication number: 20110275481Abstract: Exercise machines and linear motor systems for use in exercise machines are provided herein, where the linear motor provides a resistance force in response to a force generated by a user performing an exercise. The linear motor systems include a programmable logic and force generation control system, which is programmable to control the resistance provided by the linear motor.Type: ApplicationFiled: May 6, 2010Publication date: November 10, 2011Inventors: Michael Greenhill, Mark Greenhill, Brand Hill
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Publication number: 20090217493Abstract: Retaining rings can be used either externally on a shaft or internally within a bore are provided to form assemblies that can retain a component adjacent to the shaft or bore. The retaining rings can have a rectangular cross-section, and an axial thickness greater than the radial width. Components retained by such retaining rings can have a chamfered or radiused edge, and can overhang the retaining ring. The thrust load applied to the retaining rings can have an axial portion and a radial portion.Type: ApplicationFiled: February 25, 2009Publication date: September 3, 2009Inventor: MICHAEL GREENHILL
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Patent number: 6993816Abstract: A retaining ring installation tool for use in installing retaining rings onto shafts and into bores is formed from a single piece of metal to define a cylindrical, elongated body. A hollow cavity is formed in one end of the body and the wall of the body that defines the cavity is slotted to form a plurality of individual, flexible spring contact arms or fingers which extend forwardly from a rear body portion and which collectively define an insertion end of the tool. The ends of the fingers are enlarged to ensure contact occurs between the tool and the retaining ring during the installation of the ring onto a shaft or into a bore. The contact arms are bent either radially inwardly or outwardly so that they will contact the retaining ring at all times during installation of the ring.Type: GrantFiled: December 17, 2003Date of Patent: February 7, 2006Assignee: Smalley Steel Ring CompanyInventor: Michael Greenhill
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Publication number: 20050132552Abstract: A retaining ring installation tool for use in installing retaining rings onto shafts and into bores is formed from a single piece of metal to define a cylindrical, elongated body. A hollow cavity is formed in one end of the body and the wall of the body that defines the cavity is slotted to form a plurality of individual, flexible spring contact arms or fingers which extend forwardly from a rear body portion and which collectively define an insertion end of the tool. The ends of the fingers are enlarged to ensure contact occurs between the tool and the retaining ring during the installation of the ring onto a shaft or into a bore. The contact arms are bent either radially inwardly or outwardly so that they will contact the retaining ring at all times during installation of the ring.Type: ApplicationFiled: December 17, 2003Publication date: June 23, 2005Inventor: Michael Greenhill
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Publication number: 20050014655Abstract: A method of reducing the swelling of shale or clay encountered in a wellbore, the method comprising introducing into the wellbore a composition comprising: (a) a continuous aqueous phase; (b) a source of borate ions; (c) a source of ions selected from the group consisting of alkali metal ions, alkaline earth metal ions and ammonium ions; and (d) optionally a source of at least one sugar selected from the group consisting of monosaccharides and oligosaccharides having from 2 to 4 saccharide groups.Type: ApplicationFiled: December 12, 2002Publication date: January 20, 2005Inventors: Mark Aston, Michael Greenhill-Hooper
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Patent number: 6758465Abstract: A compression wave spring assembly including a base and a compression spring with three wave regions that are formed from a continuous elongate flat wire strip. The first wave region begins at one end of the spring with a terminal wave. The waves of the first wave region have a constant amplitude. The second wave region is positioned adjacent to the first wave region. The wave amplitude of the second wave region varies from the first wave amplitude to zero. The third wave region begins where the second wave amplitude reaches zero. The third wave region includes a zero amplitude thereby forming a flat circular shim end. The base assembly includes a recess that receives and supports the terminal wave at the non-shimmed end of the spring.Type: GrantFiled: March 5, 2002Date of Patent: July 6, 2004Assignee: Smalley Steel Ring CompanyInventors: Mark Greenhill, Michael Greenhill
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Patent number: 6254071Abstract: A round wire wave spring is formed from a single turn of round wire with a plurality of distinct waves defined therein, each of the waves having respective crest and trough portions that bear against opposing parallel surfaces of two work elements. The round wire wave spring may fit in a simple to form semi-circular groove, that is slightly greater in diameter than the free diameter of the round wire wave spring.Type: GrantFiled: December 20, 1999Date of Patent: July 3, 2001Assignee: Smalley Steel Ring CompanyInventor: Michael Greenhill
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Patent number: 6249946Abstract: A tool for the one-handed removal of retaining rings includes a handle and a ring-engaging portion. The ring-engaging portion includes an engagement head that has a slot formed in it for receiving the free end of the retaining ring. The engagement head has a flat surface adjacent the slot which forms a sidewall of the slot and which serves as a lead-in surface to fit between the layers of multiple-turn retaining rings.Type: GrantFiled: March 24, 2000Date of Patent: June 26, 2001Assignee: Small Steel Ring CompanyInventor: Michael Greenhill
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Patent number: 6250618Abstract: A curved wave shim is formed from a flat elongated wire strip which follows a sinusoidal wave path that includes a series of waves spaced about the curved wave shim path, each wave having a shoulder portion which bears against generally parallel surfaces of the working elements positioned on a shaft or in a cylinder bore. The shim fits in a rectangular groove formed either on a shaft or in a cylinder bore, the axial height of the groove being slightly greater than the distance between successive wave crests and troughs.Type: GrantFiled: September 10, 1999Date of Patent: June 26, 2001Assignee: Smalley Steel Ring CompanyInventor: Michael Greenhill
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Patent number: 5639074Abstract: An interlaced wave spring is formed from two constituent wave springs of similar thickness, amplitude and frequency. The two constituent wave springs are combined together by interlacing them so that the spring turns of each spring abut each other for substantially the entire length of the interlaced spring. This interlacing effectively increases the thickness of the spring turns of the interlaced spring to thereby provide increased loading and greater fatigue resistance characteristics.Type: GrantFiled: March 5, 1996Date of Patent: June 17, 1997Assignee: Smalley Steel Ring Co.Inventors: Michael Greenhill, David Maxwell
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Patent number: 4901987Abstract: A multiturn, crest to crest, waved compression spring is formed with flat circular shim end portions which form load support surfaces at opposite ends of the spring which are generally perpendicular to the spring longitudinal axis. The compression spring includes three distinct wave regions in which the first distinct wave region has a constant, preselected amplitude, the second distinct wave region has a gradually and incrementally diminishing amplitude and the third distinct wave region has a constant zero amplitude.Type: GrantFiled: May 3, 1988Date of Patent: February 20, 1990Assignee: Smalley Steel Ring CompanyInventors: Charles Greenhill, Michael Greenhill
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Patent number: 4752178Abstract: A circular waved retaining ring is formed from two turns of a flat elongate wire strip and which follow a continuous sinusoidal wave path that includes a series of waves equidistantly spaced about the ring wavepath, each wave having a shoulder portion which bears against generally parallel surfaces of the working elements positioned on a shaft or in a cylinder bore. The ring fits in a rectangular groove formed either on a shaft or in a cylinder bore, the width of the groove being slightly greater than the distance between successive wave crests and troughs.Type: GrantFiled: December 17, 1986Date of Patent: June 21, 1988Assignee: Smalley Steel Ring CompanyInventor: Michael Greenhill