Patents by Inventor David Sakata
David Sakata 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: 9988950Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: GrantFiled: January 16, 2014Date of Patent: June 5, 2018Assignee: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: David Sakata
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Patent number: 8893681Abstract: A valve stem seal assembly for an internal combustion engine includes an annular rigid case disposed around a valve guide and a valve stem. An annular elastomeric body is press fit within the annular rigid case and including a radially inwardly extending seal lip in sealing contact with the valve stem. The annular elastomeric body includes a first axial end facing the valve guide and a second axial end facing away from the valve guide. The annular rigid case includes a radially inwardly extending end wall opposing the second axial end of the annular elastomeric body and including a lip support extending axially from an inner portion of the radially inwardly extending end wall and opposing a radially inner surface of the radially inwardly extending seal lip.Type: GrantFiled: March 7, 2013Date of Patent: November 25, 2014Assignee: Freudenberg-NOK General PartnershipInventor: David Sakata
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Patent number: 8840013Abstract: An input and processing system allows user input information such as user affinity to efficiently determine user characteristics from content as well as novel input of commands such as copy/paste on a small mobile device screen among other computing devices. A client/server is also made more efficient due to the enhanced gathering of information. Also disclosed is a system for rapid presentation of information such as barcodes at barcode scanners. A system can request multiple barcodes, coupons or the like by detecting a signal from a scanner that information presented has been read.Type: GrantFiled: December 6, 2012Date of Patent: September 23, 2014Assignee: autoGraph, Inc.Inventors: Brian Roundtree, Thomas S Huseby, Kevin Allan, William Munslow, David Pratt, David Sakata
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Publication number: 20140251253Abstract: A valve stem seal assembly for an internal combustion engine includes an annular rigid case disposed around a valve guide and a valve stem. An annular elastomeric body is press fit within the annular rigid case and including a radially inwardly extending seal lip in sealing contact with the valve stem. The annular elastomeric body includes a first axial end facing the valve guide and a second axial end facing away from the valve guide. The annular rigid case includes a radially inwardly extending end wall opposing the second axial end of the annular elastomeric body and including a lip support extending axially from an inner portion of the radially inwardly extending end wall and opposing a radially inner surface of the radially inwardly extending seal lip.Type: ApplicationFiled: March 7, 2013Publication date: September 11, 2014Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: David SAKATA
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Publication number: 20140130766Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: ApplicationFiled: January 16, 2014Publication date: May 15, 2014Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: David SAKATA
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Patent number: 8668203Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: GrantFiled: June 26, 2012Date of Patent: March 11, 2014Assignee: Freudenberg-NOK General PartnershipInventor: David Sakata
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Publication number: 20130175763Abstract: A seal for sealingly engaging a shaft or other rotatable element includes a sealing portion having a lubricant side and a non-lubricant side and extending generally inwardly toward the shaft when the seal is installed thereon. The sealing portion has an active lip portion including a shaft engagement surface engageable with the shaft and a lubricant vent extending through at least a portion of the active lip portion. The lubricant vent provides fluid communication between opposite sides of the active lip portion, thus maintaining adequate lubrication between the shaft engagement surface and the shaft, avoiding lubricant coking, or other degradation, and extending seal life.Type: ApplicationFiled: January 10, 2012Publication date: July 11, 2013Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Alexander Berdichevsky, David Sakata, Sean Donovan
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Patent number: 8403333Abstract: A low friction seal for sealing between a shaft and a bore and includes an inner case adapted to be mounted on the shaft. An outer case is adapted to be mounted within the bore. A seal element is mounted to the inner case and includes a base portion attached to the inner case. A membrane extends from the base portion and an axially extending leg extends from the membrane. A seal lip extends from the axially extending leg and sealingly engages a radially extending portion of the outer case. As the shaft rotates, the centrifugal forces tend to cause the membrane to flex and the torque loads applied by the dynamic seal are reduced to the point that the seal lip can lift off and apply zero torque load.Type: GrantFiled: September 17, 2010Date of Patent: March 26, 2013Assignee: Freudenberg-NOK General PartnershipInventors: Alexander Berdichevsky, David Sakata, Jianbin Jiang
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Publication number: 20120267861Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: ApplicationFiled: June 26, 2012Publication date: October 25, 2012Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: David Sakata
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Patent number: 8235394Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: GrantFiled: April 23, 2008Date of Patent: August 7, 2012Assignee: Freudenberg-NOK General PartnershipInventor: David Sakata
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Publication number: 20120068419Abstract: A low friction seal for sealing between a shaft and a bore and includes an inner case adapted to be mounted on the shaft. An outer case is adapted to be mounted within the bore. A seal element is mounted to the inner case and includes a base portion attached to the inner case. A membrane extends from the base portion and an axially extending leg extends from the membrane. A seal lip extends from the axially extending leg and sealingly engages a radially extending portion of the outer case. As the shaft rotates, the centrifugal forces tend to cause the membrane to flex and the torque loads applied by the dynamic seal are reduced to the point that the seal lip can lift off and apply zero torque load.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Alexander Berdichevsky, David Sakata, Jianbin Jiang
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Patent number: 8011669Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, a second portion for engaging a valve guide, and a pressure relief lip extending from the second portion. The first portion can be configured to extend away from or within the second portion, and the second portion can have a channel formed therein. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber.Type: GrantFiled: December 6, 2007Date of Patent: September 6, 2011Assignee: Freudenberg-NOK General PartnershipInventors: David Sakata, Tigree Milam Butcher
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Publication number: 20090146382Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, a second portion for engaging a valve guide, and a pressure relief lip extending from the second portion. The first portion can be configured to extend away from or within the second portion, and the second portion can have a channel formed therein. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber.Type: ApplicationFiled: December 6, 2007Publication date: June 11, 2009Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: David Sakata, Tigree Milam Butcher
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Publication number: 20090145393Abstract: A valve stem seal can include an elastomeric component having a first portion for having a sealed engagement with a valve stem, and a pressure relief lip engaging a valve guide. The pressure relief lip can have a sealing configuration and a venting configuration. The venting configuration can allow excess exhaust gases to vent from a combustion chamber. After the venting of excess exhaust gases, the pressure relief lip can close to the sealing configuration to prevent oil from entering the combustion chamber. The elastomeric body or the valve guide can include a pressure relief channel. The elastomeric body can also include a bumper engaging the valve guide. The pressure relief channel can be disposed in the bumper.Type: ApplicationFiled: April 23, 2008Publication date: June 11, 2009Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: David Sakata
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Patent number: 7004477Abstract: A gasket is adapted to seal between a first member and a second member, and includes a first portion a second portion. The first portion includes a first elastomeric seal portion adapted to be in sealing engagement with the first member. The first portion may also include a clip or a coil spring contained within an elastomeric portion in order to provide a sealing force against the first member. The second portion is preferably molded integral with the first portion and includes a second elastomeric seal portion having a coil spring contained therein. The second portion is adapted to be in sealing engagement with the second member, with the coil spring being compressed in its normal direction when the gasket is assembled between the first member and the second member. The coil spring, then, exerts a sealing force with minimal degradation over time.Type: GrantFiled: May 21, 2003Date of Patent: February 28, 2006Assignee: Freudenberg-NOK General PartnershipInventors: David Sakata, Francis Joseph Walker
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Patent number: 6994354Abstract: A gasket includes a fist sealing portion, a second sealing portion, and an elastic arm sealingly connecting between the two. The first sealing portion sealingly engages a first member and the second sealing portion sealingly engages a second member. The elastic arm is not highly compressed between the members, allowing the gasket to vibrationally decouple the first member from the second member.Type: GrantFiled: January 15, 2003Date of Patent: February 7, 2006Assignee: Freudenberg-NOK General PartnershipInventor: David Sakata
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Publication number: 20040232626Abstract: A gasket is adapted to seal between a first member and a second member, and includes a first portion a second portion. The first portion includes a first elastomeric seal portion adapted to be in sealing engagement with the first member. The first portion may also include a clip or a coil spring contained within an elastomeric portion in order to provide a sealing force against the first member. The second portion is preferably molded integral with the first portion and includes a second elastomeric seal portion having a coil spring contained therein. The second portion is adapted to be in sealing engagement with the second member, with the coil spring being compressed in its normal direction when the gasket is assembled between the first member and the second member. The coil spring, then, exerts a sealing force with minimal degradation over time.Type: ApplicationFiled: May 21, 2003Publication date: November 25, 2004Inventors: David Sakata, Francis Joseph Walker
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Publication number: 20030160397Abstract: A gasket includes a fist sealing portion, a second sealing portion, and an elastic arm sealingly connecting between the two. The first sealing portion sealingly engages a first member and the second sealing portion sealingly engages a second member. The elastic arm is not highly compressed between the members, allowing the gasket to vibrationally decouple the first member from the second member.Type: ApplicationFiled: January 15, 2003Publication date: August 28, 2003Inventor: David Sakata
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Patent number: 6428013Abstract: An improved dual lip radial shaft seal is disclosed. The free end of the dual lip seal extends toward the air side of the seal. Optionally, the dual lip seal has an oil side excluder lip seal, an air side dust excluder lip seal, an elastomeric static seal extending from the elastomeric portion of the dual lip seal. In another optional embodiment, a relief groove is formed in the seal. A unitized seal version is also disclosed with two embodiments.Type: GrantFiled: January 28, 2000Date of Patent: August 6, 2002Assignee: Freudenberg-Nok General PartnershipInventors: David E. Johnston, Milton Griswold, David Sakata
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Patent number: 5584271Abstract: A valve stem seal for use in an internal combustion engine. The valve stem seal includes a leak resistant plastic seal member located at the bottom of a valve guide. The valve stem seal is secured in place around the bottom of the valve guide by a metallic outer case having a cylindrical shape. The valve stem seal is in continuous engagement with a reciprocating valve stem on the bottom portion of the valve guide system.Type: GrantFiled: November 14, 1995Date of Patent: December 17, 1996Assignee: Freudenberg-NOK General PartnershipInventor: David Sakata