A chain tensioner device having a first slide surface of a main arm pivotably supported at an upper end thereof, and a second slide surface of a sub-arm pivotably supported at a lower end thereof. The first and second slide surfaces slidably abut against each other. When the main arm is biased toward a timing …

Legal parties

Inventors (applicants): Yojiro Koiwa, Yuji Matsumochi, Shinji Yamada, Naoko Muguruma, Yuuji Fujimoto
Assignees (initial): Honda Motor Co., Ltd. (Tokyo, JP)
Agents: Arent Fox LLP (attorney)

The application was examined by Juan Campos, Jr., Sang Kim (USPTO dept. 3654)


  • 1. A chain tensioner device comprising: …
  • 2. The chain tensioner device according to claim 1 , wherein the first support shaft …
  • 3. The chain tensioner device according to claim 1 or 2 , wherein a length …

International priority data

JP: 2009-011669 / Jan. 22, 2009 (national)
JP: 2008-104406 / Apr. 14, 2008 (national)

Cited documents


  • JP 2004-100886 A, Apr. 1, 2004
  • JP 2009-275911 A, Nov. 1, 2009
  • JP 57-202039 B, Dec. 1, 1982
  • Sonobata US 2004/0106484 A1, Jun. 1, 2004
  • JP 09-203442 A, Aug. 1, 1997
  • JP 60-86665 U, Jun. 1, 1985
  • Muguruma et al. US 8137225 B2 / 474/111, Mar. 1, 2012
  • Koiwa et al. US 2012/0052996 A1 / 474/110, Mar. 1, 2012
  • JP 2010-242980 A, Oct. 1, 2010
  • Komorowski et al. US 7942770 B2, May. 1, 2011
  • Fujikubo et al. US 2004/0132569 A1 / 474/111, Jul. 1, 2004
  • WO WO 2006/015483 A1, Feb. 1, 2006
  • Sonobata US 7018312 B2, Mar. 1, 2006
  • JP 2010-249193 A, Nov. 1, 2010
  • JP 2011-80588 A, Apr. 1, 2011
  • Fujikubo et al. US 7074146 B2, Jul. 1, 2006


Brief Description of the Drawings

FIG. 1 is a partial front view of a first embodiment of the present invention; FIG. 2 is an enlarged view of essential portions in FIG. 1 ; …


Background of the Invention

1. Field of the Invention The present invention relates to a chain tensioner device having a main arm pivotably supported by a first support shaft and brought into slide contact …

Cross-Reference to Related Applications

This application is a divisional of pending Application of U.S. patent application Ser. No. 12/413,169, filed Mar. 27, 2009, which claims the benefit of priority from the prior Japanese Patent …

Description of the Preferred Embodiments

A first embodiment of the present invention will be explained below in conjunction with FIGS. 1 to 3B . As shown in FIG. 1 , a crankshaft 13 is rotatably …

More details about Chain Tensioner Device

Miscellaneous patent data

Includes the following drawings: Chain Tensioner Device, Enlarged view of essential portions, Partial front view of a first, states of contact between a tip end portion, the claim number 1 is selected as exemplary, the patent particularly claims a chain tensioner device comprising…, the invention description is illustrated by 5 drawings, developed by Yuuji Fujimoto et al., the invention is named Chain Tensioner Device, numbered 13/367,982 (application), assigned to a foreign company or corporation, the examination was conducted by Sang Kim (primary examiner) and Juan Campos, Jr. (assistant, 3654 USPTO department), similar classification categories are circumferentially continuous belt-engaging layer or insert of diverse material added on or between groove-forming flanges, Pulley or guide roll including circumferential belt-receiving groove, Pump capacity control by fluid pressure control means, orbital spur gears, rotary displacement members, e.g. provided with axially or radially movable vanes passing movable sealing members, Plural grooves of different circumferences, a single gear meshable with any of a set of coaxial gears of different diameters, a driving member connected differentially with both a driven member and an oscillatory member with large resistance to movement, e.g. Constantinesco gearing, Shifter mechanism including parallelogram linkage, Plural guide rolls engaging single belt, the recorded agent's company is Arent Fox LLP, 6 figures depict the invention details, the published applicant's name is Naoko Muguruma, the application publication date is Feb. 7, 2012, the protection scope is defined by 3 claims, the patent was granted on Jul. 8, 2014, the inventor's last name is Koiwa, and his first name is Yojiro, categorized under Tension adjuster has surface in sliding contact with belt as a primary classification, the grant publication number is 08771118, located in Tokyo (JP), the assignee company is Honda Motor Co., Ltd.

Invention classification information

The invention is classified under Means for varying tension of belts, ropes, or chains, Tension adjuster has surface in sliding contact with belt, Tension adjuster or shifter driven by electrical or fluid motor. The designated search classifications include Belt Guide Has Surface in Sliding Contact With Belt, Means for Adjusting Belt Tension or for Shifting Belt, Pulley or Guide Roll, Tension adjuster or shifter driven by electrical or fluid motor, Tension adjuster has surface in sliding contact with belt.

Patent details
Publication number 08771118
Publication date Jul. 8, 2014
Kind code B2
Application number 13/367,982
Application date Feb. 7, 2012
Application type U
Application series code 13
National classification 474/111
Total number of claims 3
Exemplary claims 1
Number of drawings 5
Number of figures 6
Terminal disclaimer
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