Patents by Inventor David L. Machovina
David L. Machovina 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: 20080256809Abstract: A cutting tool is described that enables quick and simple blade replacement. The cutting tool utilizes a pair of handles configured in a scissor-like arrangement. A cutting blade is releasably engaged with one of the handles. A spring or other biasing member urges the handles apart from one another.Type: ApplicationFiled: April 23, 2007Publication date: October 23, 2008Inventors: Steven M. Macsay, Glen R. Chartier, David L. Machovina
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Patent number: 7044030Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.Type: GrantFiled: January 26, 2004Date of Patent: May 16, 2006Assignee: Emerson Electric Co.Inventors: Glen R. Chartier, David L. Machovina, Chris W. Mandell
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Publication number: 20040154440Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.Type: ApplicationFiled: January 26, 2004Publication date: August 12, 2004Applicant: Emerson Electric Co., a corporation of MissouriInventors: Glen R. Chartier, David L. Machovina, Chris W. Mandell
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Patent number: 6742419Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.Type: GrantFiled: May 10, 2002Date of Patent: June 1, 2004Assignee: Emerson Electric Co.Inventors: Glen R. Chartier, David L. Machovina, Chris W. Mandell
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Publication number: 20030209109Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.Type: ApplicationFiled: May 10, 2002Publication date: November 13, 2003Applicant: Emerson Electric Co.Inventors: Glen R. Chartier, David L. Machovina, Chris W. Mandell
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Patent number: 5528919Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a female drive roll and an arm pivotally mounted on the housing and supporting a male idler roll. A feed screw between the housing and arm provides for pivoting the arm to displace the idler roll radially toward and away from the drive roll, and a quick release arrangement between the feed screw and housing is operable to release the arm to displace the idler roll away from the drive roll at the end of a roll grooving operation without rotating the feed screw. Self-tracking during a roll grooving operation is provided by teeth on an outer surface of the drive roll which urge the pipe and grooving rolls axially inwardly relative to one another.Type: GrantFiled: February 2, 1995Date of Patent: June 25, 1996Assignee: Emerson Electric CompanyInventors: Jeffrey L. McGrady, David L. Machovina
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Patent number: 5301530Abstract: Tube bending apparatus comprising a lower support carrying a mandrel having a bending groove providing a bend axis, and an upper support mounted on the lower support for rotation about the bend axis and carrying a forming member for urging a tube between the mandrel and forming member into the bending groove on rotation of the upper support relative to the lower support. The upper support is adapted to be rotated relative to the lower support through a drive shaft arrangement extending downwardly from the lower support and coupled with a drive unit having an output coupling coaxial with the drive shaft and transverse to the axis of the drive motor of the drive unit. A stand supports the bending apparatus and drive unit relative to an underlying support surface during operation of the bending apparatus.Type: GrantFiled: July 13, 1993Date of Patent: April 12, 1994Assignee: Emerson Electric CompanyInventors: Valere H. J. Beelen, David L. Machovina
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Patent number: 5284040Abstract: Tube bending apparatus comprising a lower support carrying a mandrel having a bending groove providing a bend axis, and an upper support mounted on the lower support for rotation about the bend axis and carrying a forming member for urging a tube between the mandrel and forming member into the bending groove on rotation of the upper support relative to the lower support. The upper support is adapted to be rotated relative to the lower support through a drive shaft arrangement extending downwardly from the lower support and coupled with a drive unit having an output coupling coaxial with the drive shaft and transverse to the axis of the drive motor of the drive unit. A stand supports the bending apparatus and drive unit relative to an underlying support surface during operation of the bending apparatus.Type: GrantFiled: December 9, 1992Date of Patent: February 8, 1994Assignee: Emerson Electric Co.Inventors: Valere H. J. Beelen, David L. Machovina
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Patent number: D474380Type: GrantFiled: May 10, 2002Date of Patent: May 13, 2003Assignee: Emerson Electric Co.Inventors: Glen R. Chartier, David L. Machovina, Chris W. Mandell
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Patent number: D657213Type: GrantFiled: June 3, 2009Date of Patent: April 10, 2012Assignee: Emerson Electic Co.Inventors: Frederick D. Pond, Paul W. Gress, David L. Machovina
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Patent number: D660116Type: GrantFiled: March 9, 2011Date of Patent: May 22, 2012Assignee: Emerson Electric Co.Inventors: Bryan Owen, David L. Machovina