Patents by Inventor David Chan Wah Lung
David Chan Wah Lung 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: 10843428Abstract: Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods include providing a tire tread ring having opposing side edges, arranging the tread ring in an initial ring arrangement in communication with a pressure source, and expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement. The pressure source is in communication with an outer side of the tread ring, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source. Such methods also include inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement, contracting the tread ring into an installed arrangement about an outer surface of the tire carcass, and, releasing the vacuum along the outer side of the tread ring.Type: GrantFiled: August 21, 2017Date of Patent: November 24, 2020Assignee: Compagnie Generale des Etablissements MichelinInventors: Chinglin Pan, Michael D. Petrovich, John E. Hommerson, David Chan Wah Lung
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Publication number: 20170348934Abstract: Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods include providing a tire tread ring having opposing side edges, arranging the tread ring in an initial ring arrangement in communication with a pressure source, and expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement. The pressure source is in communication with an outer side of the tread ring, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source. Such methods also include inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement, contracting the tread ring into an installed arrangement about an outer surface of the tire carcass, and, releasing the vacuum along the outer side of the tread ring.Type: ApplicationFiled: August 21, 2017Publication date: December 7, 2017Applicant: Compagnie Generale des Etablissements MichelinInventors: Chinglin PAN, Michael D. PETROVICH, John E. HOMMERSON, David Chan Wah LUNG
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Patent number: 9757916Abstract: Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods may include the step of providing a tire tread ring having opposing side edges; arranging the tread ring in an initial ring arrangement in communication with a pressure source, the pressure source being in communication with an outer side of the tread ring; expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source; inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement; contracting the tread ring into an installed arrangement about an outer surface of the tire carcass; and, releasing the vacuum along the outer side of the tread ring.Type: GrantFiled: October 31, 2011Date of Patent: September 12, 2017Assignee: Compagnie Generale des Etablissements MichelinInventors: Chinglin Pan, Michael D. Petrovich, John E. Hommerson, David Chan Wah Lung
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Publication number: 20170157876Abstract: Particular embodiments of the invention concerns methods of forming a retreaded tire with improved tread edge area bonding, and re-treaded tires formed thereby. One embodiment of such methods includes forming an unbonded retreaded tire by arranging a pre-cured tread annularly around an annular tire carcass with a bonding layer arranged there between. The pre-cured tread includes a pair of opposing tread edges laterally-spaced to define a width of the pre-cured tread. The method also includes bonding the tread of the unbonded tire to the tire carcass to form a bonded retreaded tire by sufficiently pressurizing and heating the curing chamber to cure the bonding layer of the unbonded tire, which includes at least partially bonding a pair of laterally-spaced tread edge areas of the pre-cured tread to the tire carcass prior to an intermediate portion of the pre-cured tread located between the pair of laterally-spaced tread edge areas.Type: ApplicationFiled: January 31, 2014Publication date: June 8, 2017Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Metodi L. IKONOMOV, David Chan Wah LUNG, Adib T. CHEBLI, Jeremy MEHLEM
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Patent number: 9573330Abstract: The subject invention includes methods and apparatus for joining treads. Such methods include the step of providing a first tread portion and a second tread portion for forming a joined tread, each tread portion comprising a section of tire tread extending lengthwise from a terminal end. Additional steps include providing a first fixture configured to retain the first tread portion and a second fixture configured to retain the second tread portion and securing the first tread portion into the first fixture and securing the second tread portion into the second fixture, each of the first and second fixtures being arranged within the first and second fixtures such that the terminal end of each tread portion is in communication with a joining side of each fixture. The methods further include directing the terminal ends towards each other and into forceful engagement with an elastomeric joining material arranged between the terminal ends.Type: GrantFiled: March 9, 2016Date of Patent: February 21, 2017Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Chinglin Pan, David Chan Wah Lung, Michael D. Petrovich
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Publication number: 20160354986Abstract: Particular embodiments of the present invention include method of forming a retreaded tire. The method includes providing an unbonded retreaded tire, forming a degassing assembly by arranging a flexible degassing membrane around an outer circumference of the unbonded retreaded tire, placing the each of the one or more vacuum chambers under at least partial vacuum pressure, and performing a degassing operation by pressurizing a degassing chamber while each of the one or more vacuum chambers in the degassing assembly are at least under partial vacuum pressure. The method further includes disassembling the degassing assembly by separating the unbonded degassed tire from the flexible degassing membrane, and bonding the unbonded degassed tire to form a bonded retreaded tire by pressurizing a curing chamber and sufficiently heating the curing chamber to cure the bonding layer of the unbonded degassed tire. A tire made by a similar process is also disclosed.Type: ApplicationFiled: November 15, 2013Publication date: December 8, 2016Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Metodi L. IKONOMOV, David Chan Wah LUNG, Adib T. CHEBLI, Michael WIDMYER
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Publication number: 20160185060Abstract: The subject invention includes methods and apparatus for joining treads. Such methods include the step of providing a first tread portion and a second tread portion for forming a joined tread, each tread portion comprising a section of tire tread extending lengthwise from a terminal end. Additional steps include providing a first fixture configured to retain the first tread portion and a second fixture configured to retain the second tread portion and securing the first tread portion into the first fixture and securing the second tread portion into the second fixture, each of the first and second fixtures being arranged within the first and second fixtures such that the terminal end of each tread portion is in communication with a joining side of each fixture. The methods further include directing the terminal ends towards each other and into forceful engagement with an elastomeric joining material arranged between the terminal ends.Type: ApplicationFiled: March 9, 2016Publication date: June 30, 2016Inventors: Chinglin PAN, David Chan Wah LUNG, Michael D. PETROVICH
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Patent number: 9302439Abstract: The subject invention includes methods and apparatus for joining treads. Such methods include the step of providing a first tread portion and a second tread portion for forming a joined tread, each tread portion comprising a section of tire tread extending lengthwise from a terminal end. Additional steps include providing a first fixture configured to retain the first tread portion and a second fixture configured to retain the second tread portion and securing the first tread portion into the first fixture and securing the second tread portion into the second fixture, each of the first and second fixtures being arranged within the first and second fixtures such that the terminal end of each tread portion is in communication with a joining side of each fixture. The methods further include directing the terminal ends towards each other and into forceful engagement with an elastomeric joining material arranged between the terminal ends.Type: GrantFiled: June 30, 2011Date of Patent: April 5, 2016Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Chinglin Pan, David Chan Wah Lung, Michael D. Petrovich
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Publication number: 20140130961Abstract: Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods may include the step of providing a tire tread ring having opposing side edges; arranging the tread ring in an initial ring arrangement in communication with a pressure source, the pressure source being in communication with an outer side of the tread ring; expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source; inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement; contracting the tread ring into an installed arrangement about an outer surface of the tire carcass; and, releasing the vacuum along the outer side of the tread ring.Type: ApplicationFiled: October 31, 2011Publication date: May 15, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Chinglin Pan, Michael D. Petrovich, John E. Hommerson, David Chan Wah Lung
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Publication number: 20140060730Abstract: The subject invention includes methods and apparatus for joining treads. Such methods include the step of providing a first tread portion and a second tread portion for forming a joined tread, each tread portion comprising a section of tire tread extending lengthwise from a terminal end. Additional steps include providing a first fixture configured to retain the first tread portion and a second fixture configured to retain the second tread portion and securing the first tread portion into the first fixture and securing the second tread portion into the second fixture, each of the first and second fixtures being arranged within the first and second fixtures such that the terminal end of each tread portion is in communication with a joining side of each fixture. The methods further include directing the terminal ends towards each other and into forceful engagement with an elastomeric joining material arranged between the terminal ends.Type: ApplicationFiled: June 30, 2011Publication date: March 6, 2014Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Chinglin Pan, David Chan Wah Lung, Michael D. Petrovich