Einzeltreffer — DigiBib

A pneumatic tire which comprises a land portion (10) and a land portion (20). A main groove (50) extending along the tire circumferential direction is formed between the land portion (10) and the land portion (20). The land portion (10) comprises a groove wall (10a) that forms the main groove (50). The land portion (20) comprises a groove wall (20a) that forms the main groove (50). The groove wall (10a) and the groove wall (20a) are serpentine along the tire circumferential direction (R) when seen from a plane of the tread surface, and the groove width of the main groove (50) in the tread width direction (WTR) varies in a predetermined repetition interval (λ) along the tire circumferential direction. The ratio of the minimum width (WMIN) of the groove to the maximum width (WMAX) of the groove satisfies a relation of 35%≦WMIN/WMAX≦85%.

Titel:	Pneumatic tire with main groove having serpentine groove walls
Autor/in / Beteiligte Person:	Kiwaki, Yukihiro ; Fujita, Shungo ; Kojima, Takaaki ; Yamaya, Kenjiro
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2016
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 9,452,643 Publication Date: September 27, 2016 Appl. No: 13/148418 Application Filed: February 09, 2010 Assignees: BRIDGESTONE CORPORATION (Tokyo, JP) Claim: 1. A pneumatic tire which comprises: a first land portion which extends along a circumferential direction of the tire and comes in contact with a road surface; a second land portion which extends along the circumferential direction of the tire and comes in contact with the road surface; a closed lug groove which extends in a width direction of a tread of the tire and is formed in the first land portion; an opened lug groove which extends in a width direction of the tread of the tire and is formed in the second land portion; and a main groove which extends along the circumferential direction of the tire and is formed between the first land portion and the second land portion, wherein: the first land portion includes a first groove wall which forms the main groove; the second land portion includes a second groove wall which forms the main groove; the first groove wall and the second groove wall are serpentine along the circumferential direction of the tire when seen from a plane of the tread surface; a groove width of the main groove along a width direction of the tread varies in a predetermined repetition cycle along the circumferential direction of the tire; the main groove has a minimum-width portion W MIN at which the groove width is minimum, and a maximum-width portion W MAX at which the groove width is maximum, the maximum-width portion W MAX adjacent to the minimum-width portion W MIN in the circumferential direction of the tire; a ratio of the groove at the minimum-width portion W MIN and the groove at the maximum-width portion W MAX satisfies a relation of 35%≦W MIN /W MAX ≦85%; a wide-width groove portion which includes the maximum-width portion W MAX of the groove width is provided in the main groove; the opened lug groove and the closed lug groove are inclined with respect to the circumferential direction of the tire; the closed lug groove does not communicate with the main groove; the opened lug groove communicates with the main groove at a location which is located between the minimum-width portion W MIN and the maximum-width portion W MAX ; the location is nearer to the maximum-width portion W MAX than to the minimum-width portion W MIN ; a center line of the main groove extending along the circumferential direction is located inside of an equator line of the tire when seen from the direction in which the tire is mounted on a vehicle, and wherein: the main groove forms a wide-width groove portion which includes the maximum-width portion W MAX ; a raised portion which is raised outward in a radial direction of the tire is formed in a bottom portion of the main groove; the raised portion is formed in the wide-width groove portion; a width of the raised portion at bottom is shorter than a width of the maximum-width portion W MAX ; and a depth of the main groove at both sides of the raised portion in the width direction is equal to a depth of the main groove at the minimum-width portion W MIN . Claim: 2. The pneumatic tire according to claim 1 , wherein a relation of (W MAX −W MIN)/A≦0.25 is satisfied where an average length along the width direction of the tread of the main groove is set to A. Claim: 3. The pneumatic tire according to claim 1 , wherein distance from the equator line of the tire to the main groove is 9 to 25% with respect to a contact width of the tread with respect to the width direction of the tread. Claim: 4. The pneumatic tire according to claim 1 , wherein the first groove wall and the second groove wall have a predetermined amplitude along the width direction of the tread and the predetermined repetition cycle is 15 times to 100 times the predetermined amplitude. Claim: 5. The pneumatic tire according to claim 1 , wherein a first side portion of the raised portion which faces the first groove wall extends along the first groove wall and a second side portion of the raised portion which faces the second groove wall extends along the second groove wall. Claim: 6. The pneumatic tire according to claim 5 , wherein the raised portion is tapered toward a front end portion and a rear end portion when seen from a plane of the tread surface. Claim: 7. The pneumatic tire according to claim 6 , wherein the height of the raised portion is smaller than the depth of the main groove. Patent References Cited: 4462446 July 1984 Goergen et al. ; 5373882 December 1994 Nakagawa ; 5472030 December 1995 Shibata et al. ; 6601624 August 2003 Ratliff, Jr. ; 6796350 September 2004 Gerresheim et al. ; 2003/0192634 October 2003 Hino ; 0 598 568 May 1994 ; 655710 August 1951 ; 58-191610 November 1983 ; 06-004365 January 1994 ; 6-143937 May 1994 ; 06-239108 August 1994 ; 7-025209 January 1995 ; 07-276920 October 1995 ; 7-329512 December 1995 ; 8-011508 January 1996 ; 10-151914 June 1998 ; 10-166815 June 1998 ; 2001-039122 February 2001 ; 2002-225511 August 2002 ; 2003-063211 March 2003 ; 2006-076349 March 2006 ; 2006-182126 July 2006 ; 2006-182126 July 2006 ; 2006-205824 August 2006 Other References: Machine translation for Japan 2006-182126 (no date). cited by examiner ; Machine translation for Japan 06-004365 B2 (no date). cited by examiner ; Machine translation for Japan 2006-076349 (no date). cited by examiner ; Machine translation for Japan 10-166815 (no date). cited by examiner ; Machine translation for Japan 10-151914 (no date). cited by examiner ; Machine translation for Japan 07-276920 (no date). cited by examiner ; Machine translation for Japan 06-239108 (no date). cited by examiner ; International Search Report of PCT/JP2010/051875 dated May 11, 2010. cited by applicant ; Extended European Search Report, dated Apr. 18, 2013, issued in corresponding European Patent Application No. 10738655.9. cited by applicant ; Japanese Office Action, dated Mar. 5, 2013, issued in corresponding Japanese Patent Application No. 2009-027705. cited by applicant Primary Examiner: Maki, Steven D Attorney, Agent or Firm: Sughrue Mion, PLLC

Klicken Sie ein Format an und speichern Sie dann die Daten oder geben Sie eine Empfänger-Adresse ein und lassen Sie sich per Email zusenden.

BibTeX Citavi, JabRef, u.a.
(Literaturverwaltung)

PDF kein Volltext!
(Merkzettel, Notizen)

RIS Endnote, Citavi u.a.
(Literaturverwaltung)

MODS
(XML zur Weiterverarbeitung)

oder

Wählen Sie das für Sie passende Zitationsformat und kopieren Sie es dann in die Zwischenablage, lassen es sich per Mail zusenden oder speichern es als PDF-Datei.

Gewünschter Zitations-Stil:

oder

Bitte prüfen Sie, ob die Zitation formal korrekt ist, bevor Sie sie in einer Arbeit verwenden. Benutzen Sie gegebenenfalls den "Exportieren"-Dialog, wenn Sie ein Literaturverwaltungsprogramm verwenden und die Zitat-Angaben selbst formatieren wollen.

Pneumatic tire with main groove having serpentine groove walls