IP Library Granted Patent US 1,110,896
Granted Patent S1
US 1,110,896 · App. 29/937,371 · Granted Feb 3, 2026

Bicycle chainring

Inventors: Christopher Stefko (Chicago, IL); Stephanie Raulston (San Luis Obispo, CA); Bryn Johnson (San Luis Obispo, CA)
Assignee: SRAM, LLC
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Quick Facts
Patent No.
US 1,110,896
App. No.
29/937,371
Granted
Feb 3, 2026
Kind
S1
Claims (1)

The ornamental design for a bicycle chainring as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 22, 2025
From: STEFKO, CHRISTOPHER; JOHNSON, BRYN; RAULSTON, STEPHANIE
To: SRAM, LLC
Reel/Frame 072644/0147 →
References Cited (50)
US 740455A · Lagerfeld · 1903 [cited by applicant]
US 2863323A · Shaffer · 1958 [cited by applicant]
US 5782712A · Campagnolo · 1998 [cited by applicant]
US 5980407A · Takamori · 1999 [cited by applicant]
US 6013001A · Miyoshi · 2000 [cited by applicant]
US 6572500B2 · Tetsuka · 2003 [cited by applicant]
US D540718S · Wickliffe · 2007 [cited by examiner]
US 7258638B2 · Valle · 2007 [cited by examiner]
US D599255S · Wickliffe · 2009 [cited by examiner]
US D599718S · Wickliffe · 2009 [cited by examiner]
US 7883437B2 · Braedt · 2011 [cited by applicant]
US D715699S · Reiter · 2014 [cited by applicant]
US D716191S · Reiter · 2014 [cited by applicant]
US D728432S · Lin · 2015 [cited by examiner]
US D845839S · Luman · 2019 [cited by applicant]
US D847034S · Luman · 2019 [cited by applicant]
US D856858S · Luman · 2019 [cited by applicant]
US D860060S · Luman · 2019 [cited by applicant]
US D861543S · Luman · 2019 [cited by applicant]
US D867936S · Reiter · 2019 [cited by applicant]
US 10569829B1 · Huang · 2020 [cited by examiner]
US 11718368B1 · Golec · 2023 [cited by examiner]
US 12296910B2 · Jasper · 2025 [cited by examiner]
US 20030153423A1 · Smith · 2003 [cited by examiner]
US 20060258498A1 · Tabe · 2006 [cited by examiner]
US 20080132367A1 · Braedt · 2008 [cited by applicant]
US 20080207369A1 · Bouchez · 2008 [cited by examiner]
US 20110319209A1 · Huang · 2011 [cited by examiner]
US 20130281239A1 · Carrasco Vergara · 2013 [cited by examiner]
US 20140013900A1 · Shiraishi · 2014 [cited by examiner]
US 20150082939A1 · Meyer · 2015 [cited by examiner]
US 20170167590A1 · Braedt · 2017 [cited by examiner]
US 20170174288A1 · Wu · 2017 [cited by examiner]
US 20180079467A1 · Hirose · 2018 [cited by examiner]
US 20180274651A1 · Gerhardt · 2018 [cited by examiner]
US 20190185108A1 · Bush · 2019 [cited by examiner]
US 20190359286A1 · Ichikawa · 2019 [cited by examiner]
US 20210300504A1 · Miller · 2021 [cited by examiner]
US 20220379997A1 · Ohyabu · 2022 [cited by examiner]
US 20230012006A1 · Ortin · 2023 [cited by examiner]
US 20230366457A1 · Wickliffe · 2023 [cited by examiner]
US 20240166302A1 · Hara · 2024 [cited by examiner]
First Look: The New SRAM Red, May 15, 2024, The Pro Closet Webpage[online], [Site Visit May 1, 2025], URL: https://www.theproscloset.com/blogs/news/first-look-the-new-sram-red-axs-is-lighter-and-more-refined?srsltid=Afm… [cited by examiner]
Unboxing the new SRAM Red AXS Group Set TPC, May 15, 2024, YouTube Webpage[online], [Site Visit May 12, 2025], URL: https://www.youtube.com/watch?v=JIAuSUkDRn0 (Year: 2024). [cited by examiner]
New SRAM Red—Know This Before You Buy, May 15, 2024, YouTube Webpage[online], [Site Visit May 12, 2025], URL: https://www.youtube.com/watch?v=Cjiauctf_dQ (Year: 2024). [cited by examiner]
Cunningham, Richard, “OneUp Switch Chainring System—Review”, Pinbike Reviews, Mar. 8, 2017, 5 pages. [cited by applicant]
“fullspeedahead.com, ““SL-K MTB modular chainring 1x—Chainrings—Type””, fullspeedahead.com, Mar. 29, 2018, 4 pages, https://shop.fullspeedahead.com/en/type/chainrings/sl-k-mtb-modular-chainring-1x-3209”. [cited by applicant]
gearjunkie.com, “Unorthodox Gear: Would You Pedal An ‘Oval’ Chainring?”, gearjunkie.com, Mar. 29, 2018, 7 pages, https://gearjunkie.com/oval-bike-chainring-review. [cited by applicant]
Mantel.com, “Sram X-sync directmount GXP Kettingblad kopen?”, Mantel.com, Mar. 29, 2018, 2 pages, https://www.mantel.com/sram-x-sync-directmount-gxp-mtb-kettingblad. [cited by applicant]
Benson, Cory, EB16: FSA PowerBox launches power meter cranks developed with Power2Max, bikerumor.com, Sep. 30, 2016, 7 pages, https://www.bikerumor.com/2016/09/30/eb16-fsa-powerbox-launches-power-meter-cranks-developed-… [cited by applicant]