Patents by Inventor James Kevin Lindstrom
James Kevin Lindstrom 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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Patent number: 10458525Abstract: A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface and being configured to pivot relative to the base about a pivot axis. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base, and a seal assembly sealingly positioned between the arm and the base. The seal assembly is coaxial with the pivot axis and configured to accommodate relative axial movement between the base and the arm and relative radial movement between the base and the arm while still maintaining a seal therebetween.Type: GrantFiled: September 14, 2017Date of Patent: October 29, 2019Assignee: Dayco IP Holdings, LLCInventors: Kevin G. Dutil, Anthony E. Lannutti, James Kevin Lindstrom
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Patent number: 10203025Abstract: Zed-type belt tensioners are described that include an arm having a first end rotatable about a first axis to move a second end of the arm into engagement with a belt, a tensioner component coupled to the first end of the arm, and a supplemental force element positioned between the arm and the tensioner component. The second end of the arm while tensioning a belt experiences a hub load applied by the belt and the supplemental force element is positioned at a point to apply a force that counteracts the hub load thereby reducing cocking of the arm. Also described herein are methods of counteracting the hub load using such belt tensioners and methods of assembly of such belt tensioners.Type: GrantFiled: February 28, 2014Date of Patent: February 12, 2019Assignee: Dayco IP Holdings, LLCInventors: James Kevin Lindstrom, Kevin Gerard Dutil, Anthony E. Lannutti, Chester E. Duffield, III, Robert J. Crist
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Publication number: 20180003271Abstract: A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface and being configured to pivot relative to the base about a pivot axis. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base, and a seal assembly sealingly positioned between the arm and the base. The seal assembly is coaxial with the pivot axis and configured to accommodate relative axial movement between the base and the arm and relative radial movement between the base and the arm while still maintaining a seal therebetween.Type: ApplicationFiled: September 14, 2017Publication date: January 4, 2018Applicant: Dayco IP Holdings, LLCInventors: Kevin G. Dutil, Anthony E. Lannutti, James Kevin Lindstrom
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Patent number: 9845860Abstract: Retaining clamps for retaining an over-molded plastic component to a substrate are disclosed herein that include a generally annular band having an inner surface, which defines an inner cavity for receiving a substrate rotatable about a central axis, and an opposing outer surface, which receives an over molded plastic component. The clamps have a plurality of axially extending retaining features formed in the annular band. The retaining features define a trough in the inner surface and a first crest in the outer surface or define a coupling portion forming a second crest. The retaining features are evenly spaced a distance apart along the generally annular band. A pulley body assembly is disclosed having a retaining clamp seated about an outer ring of a bearing for retaining a pulley body over-molded thereto. A method for over-molding a plastic component to a substrate using the retaining clamp is also disclosed herein.Type: GrantFiled: July 20, 2015Date of Patent: December 19, 2017Assignee: Dayco IP Holdings, LLCInventors: Anthony Eugene Lannutti, James Kevin Lindstrom
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Patent number: 9777806Abstract: A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface and being configured to pivot relative to the base about a pivot axis. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base, and a seal assembly sealingly positioned between the arm and the base. The seal assembly is coaxial with the pivot axis and configured to accommodate relative axial movement between the base and the arm and relative radial movement between the base and the arm while still maintaining a seal therebetween.Type: GrantFiled: March 28, 2012Date of Patent: October 3, 2017Assignee: Dayco IP Holdings, LLCInventors: Kevin G. Dutil, Anthony E. Lannutti, James Kevin Lindstrom
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Patent number: 9671007Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.Type: GrantFiled: December 23, 2013Date of Patent: June 6, 2017Assignee: DAYCO IP HOLDINGS, LLCInventors: Kevin G. Dutil, James Kevin Lindstrom, Zachary Fittro, Jeffrey A. Swane, Donald B. Brown, Robert James Crist
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Publication number: 20170023119Abstract: Retaining clamps for retaining an over-molded plastic component to a substrate are disclosed herein that include a generally annular band having an inner surface, which defines an inner cavity for receiving a substrate rotatable about a central axis, and an opposing outer surface, which receives an over molded plastic component. The clamps have a plurality of axially extending retaining features formed in the annular band. The retaining features define a trough in the inner surface and a first crest in the outer surface or define a coupling portion forming a second crest. The retaining features are evenly spaced a distance apart along the generally annular band. A pulley body assembly is disclosed having a retaining clamp seated about an outer ring of a bearing for retaining a pulley body over-molded thereto. A method for over-molding a plastic component to a substrate using the retaining clamp is also disclosed herein.Type: ApplicationFiled: July 20, 2015Publication date: January 26, 2017Applicant: DAYCO IP HOLDINGS, LLCInventors: Anthony Eugene Lannutti, James Kevin Lindstrom
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Patent number: 9212731Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner has an arm that is rotatable about a first axis. The tensioner also includes an outer spring and at least one inner spring. The outer spring has an outer coil that defines an outer diameter. The inner spring has an inner coil that defines an inner diameter. The inner diameter of the inner coil is less than the outer diameter of the outer coil such that at least a portion of the inner spring is received by the outer spring. The outer spring and the inner spring both urge the arm to rotate about the first axis and into tensioning engagement with the power transmitting element.Type: GrantFiled: July 26, 2013Date of Patent: December 15, 2015Assignee: DAYCO IP HOLDINGS, LLCInventor: James Kevin Lindstrom
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Publication number: 20150247557Abstract: Zed-type belt tensioners are described that include an arm having a first end rotatable about a first axis to move a second end of the arm into engagement with a belt, a tensioner component coupled to the first end of the arm, and a supplemental force element positioned between the arm and the tensioner component. The second end of the arm while tensioning a belt experiences a hub load applied by the belt and the supplemental force element is positioned at a point to apply a force that counteracts the hub load thereby reducing cocking of the arm. Also described herein are methods of counteracting the hub load using such belt tensioners and methods of assembly of such belt tensioners.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: Dayco IP Holdings, LLCInventors: James Kevin Lindstrom, Kevin Gerard Dutil, Anthony E. Lannutti, Chester E. Duffield, III, Robert J. Crist
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Publication number: 20150031484Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner includes an arm that is rotatable about a first axis and a spring. The spring has at least one inner winding, an outer winding, and a transition zone. The outer winding has an outer coil that defines an outer diameter. The inner winding has an inner coil that defines an inner diameter. The inner diameter of the inner coil is less than the outer diameter of the outer coil such that at least a portion of the inner winding is received by the outer winding. The outer winding and the inner winding of the spring both urge the arm to rotate about the first axis and into tensioning engagement with the power transmitting element.Type: ApplicationFiled: July 26, 2013Publication date: January 29, 2015Applicant: DAYCO IP HOLDINGS, LLCInventor: James Kevin Lindstrom
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Publication number: 20150031485Abstract: A tensioner is disclosed that may be part of a power system where the tensioner provides tension to an endless power transmitting element such as a belt, chain, or other continuous loop. The tensioner has an arm that is rotatable about a first axis. The tensioner also includes an outer spring and at least one inner spring. The outer spring has an outer coil that defines an outer diameter. The inner spring has an inner coil that defines an inner diameter. The inner diameter of the inner coil is less than the outer diameter of the outer coil such that at least a portion of the inner spring is received by the outer spring. The outer spring and the inner spring both urge the arm to rotate about the first axis and into tensioning engagement with the power transmitting element.Type: ApplicationFiled: July 26, 2013Publication date: January 29, 2015Applicant: DAYCO IP HOLDINGS, LLCInventor: James Kevin Lindstrom
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Publication number: 20140121050Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.Type: ApplicationFiled: December 23, 2013Publication date: May 1, 2014Applicant: DAYCO IP HOLDINGS, LLCInventors: Kevin G. Dutil, James Kevin Lindstrom, Zachary Fittro, Jeffrey A. Swane, Donald B. Brown, Robert James Crist
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Publication number: 20140121051Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.Type: ApplicationFiled: December 23, 2013Publication date: May 1, 2014Applicant: DAYCO IP HOLDINGS, LLCInventors: Kevin G. Dutil, James Kevin Lindstrom, Zachary Fittro, Jeffrey A. Swane, Donald B. Brown, Robert James Crist
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Patent number: 8617016Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.Type: GrantFiled: June 2, 2010Date of Patent: December 31, 2013Assignee: Dayco IP Holdings, LLCInventors: Kevin G. Dutil, James Kevin Lindstrom, Zachary Fittro, Jeffrey A. Swane, Donald B. Brown, Robert James Crist
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Publication number: 20130260933Abstract: A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface and being configured to pivot relative to the base about a pivot axis. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base, and a seal assembly sealingly positioned between the arm and the base. The seal assembly is coaxial with the pivot axis and configured to accommodate relative axial movement between the base and the arm and relative radial movement between the base and the arm while still maintaining a seal therebetween.Type: ApplicationFiled: March 28, 2012Publication date: October 3, 2013Applicant: DAYCO PRODUCTS, LLCInventors: Kevin G. Dutil, Anthony E. Lannutti, James Kevin Lindstrom
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Patent number: 8545352Abstract: A tensioner may be part of a power system to tension an endless power transmitting element. The tensioner includes an arm having an arm arbor with a slot therethrough that is rotatable about a first axis, a bushing having a sleeve that includes a cut-out and a removable sleeve-segment that has a protrusion thereon, the sleeve-segment being receivable in the cut-out with the protrusion in the slot, and a spring coupled to the arm for rotation of the arm about the first axis into tensioning engagement with a power transmitting element. The spring is positioned where it can radially expand into contact with the protrusion of the bushing, at least the protrusion on the sleeve-segment, as the arm is rotated in a direction opposite the direction of tensioning engagement such that the bushing is urged radially outward relative to the arm arbor to provide frictional damping.Type: GrantFiled: January 18, 2011Date of Patent: October 1, 2013Assignee: Dayco IP Holdings, LLCInventors: Anthony E. Lannutti, Robert J. Crist, James Kevin Lindstrom
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Publication number: 20130217525Abstract: A tensioning system including a body having a base and an engagement surface pivotally coupled to the base. The system further includes a biasing mechanism operatively coupled to the engagement surface to bias the engagement surface relative to the base, and a locating device coupled to the body. The locating device is configured to rotationally position the tensioning system, and the locating device has an adjustable effective length.Type: ApplicationFiled: February 17, 2012Publication date: August 22, 2013Applicant: DAYCO PRODUCTS, LLCInventors: Robert James Crist, Kevin Gerard Dutil, Anthony Eugene Lannutti, James Kevin Lindstrom, Jeffrey Allen Pendergrass
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Publication number: 20120058848Abstract: A tensioner may be part of a power system to tension an endless power transmitting element. The tensioner includes an arm having an arm arbor with a slot therethrough that is rotatable about a first axis, a bushing having a sleeve that includes a cut-out and a removable sleeve-segment that has a protrusion thereon, the sleeve-segment being receivable in the cut-out with the protrusion in the slot, and a spring coupled to the arm for rotation of the arm about the first axis into tensioning engagement with a power transmitting element. The spring is positioned where it can radially expand into contact with the protrusion of the bushing, at least the protrusion on the sleeve-segment, as the arm is rotated in a direction opposite the direction of tensioning engagement such that the bushing is urged radially outward relative to the arm arbor to provide frictional damping.Type: ApplicationFiled: January 18, 2011Publication date: March 8, 2012Applicant: DAYCO PRODUCTS, LLCInventors: Anthony E. Lannutti, Robert J. Crist, James Kevin Lindstrom
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Publication number: 20110300979Abstract: Low-noise pulleys and methods of constructing low-noise pulleys are disclosed. In a first aspect, first and second pluralities of arms extending radially outward from the outer hub to the outer rim are angularly offset from each other about the axis of rotation to eliminate symmetry across the lateral midline of the pulley. In a second aspect, the radially outermost ends of a plurality of arms are arcuately spaced apart according to a pitch sequence describing a pseudo-random pattern of relative spacings so as to reduce or eliminate rotational symmetry of the pulley. In a third aspect, features of the first and second aspects are combined, and in one embodiment, first and second pluralities of arms are, respectively, approximately oppositely canted so as to vary the arcuate spacings of the laterally outermost ends of the arms.Type: ApplicationFiled: June 2, 2010Publication date: December 8, 2011Applicant: DAYCO PRODUCTS LLCInventors: Kevin G. Dutil, James Kevin Lindstrom, Zachary Fittro, Jeffrey A. Swane, Donald B. Brown, Robert James Crist