F01L 2311/00
Differential gears located between crankshafts and camshafts for varying the timing of
Official title: Differential gears located between crankshafts and camshafts for varying the timing of valves
F01L2311/00 (Differential gears located between crankshafts and camshafts for varying the timing of) appears on 7 US grants and 9 published applications in this corpus.
Search patents in F01L- Granted patents
- 7
- Published applications
- 9
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
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| 1989 | 1 | 0 |
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| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
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| 2012 | 0 | 0 |
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| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Mechanical cam phasing systems and methods6 May 2025US 12,291,983 B2HUSCO Automotive Holdings LLC
- Dual actuating variable cam21 Sep 2021US 11,125,121 B2BorgWarner Inc.
- Valve-timing control device for internal combustion engine23 Jan 2018US 9,874,116 B2Hitachi Automotive Systems, Ltd.
- Variable timing mechanism for a rotary valve20 Jul 2004US 6,763,788 B2Bishop Innovation Limited
- Selectable 2-stroke/4-stroke camshaft drive system31 Dec 2002US 6,499,452 B2
- Mechanical Cam Phasing Systems and Methods18 Jan 2024US 2024/0018886 A1HUSCO Automotive Holdings LLC
- Dual actuating variable cam2 Dec 2021US 2021/0372302 A1BorgWarner Inc.
- Dual Camshaft Phase Control Assembly3 Dec 2020US 2020/0378280 A1
- Valve timing system12 Nov 2020US 2020/0355095 A1
- Dual Camshaft Phase Control Assembly26 Sep 2019US 2019/0292951 A1
Most cited
By later US patents
- Selectable 2-stroke/4-stroke camshaft drive system8US 6,499,452 B22002
- Variable phase couplings5US 4,856,370 A1989
- Variable timing mechanism for a rotary valve4US 6,763,788 B2Bishop Innovation Limited · 2004
- Differential camshaft3US 4,895,045 ALonrho PLC · 1990
- Dual actuating variable cam1US 11,125,121 B2BorgWarner Inc. · 2021