F16H 2007/0808
Extension coil springs
Official title: {Extension coil springs}
F16H2007/0808 (Extension coil springs) appears on 123 US grants and 109 published applications in this corpus.
Search patents in F16H- Granted patents
- 123
- Published applications
- 109
- Assignees
- 89
- Inventors
- 260
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 3 |
| 2002 | 5 | 4 |
| 2003 | 5 | 6 |
| 2004 | 5 | 10 |
| 2005 | 7 | 5 |
| 2006 | 3 | 3 |
| 2007 | 1 | 7 |
| 2008 | 4 | 5 |
| 2009 | 7 | 4 |
| 2010 | 0 | 1 |
| 2011 | 5 | 7 |
| 2012 | 3 | 2 |
| 2013 | 2 | 0 |
| 2014 | 3 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 0 |
| 2017 | 0 | 6 |
| 2018 | 2 | 10 |
| 2019 | 7 | 4 |
| 2020 | 4 | 6 |
| 2021 | 6 | 8 |
| 2022 | 5 | 2 |
| 2023 | 1 | 3 |
| 2024 | 5 | 3 |
| 2025 | 3 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Belt tension adjustment system6 Oct 2026US 12,753,826 B2Husqvarna AB
- Timing belt tensioner for 3D printer and 3D printer7 Apr 2026US 12,595,839 B2Shenzhen Tuozhu Technology Co., Ltd.
- Tensioning adjusting mechanism for drum14 Oct 2025US 12,442,124 B1Ningbo Lesli Industry Co., Ltd.
- Belt tensioning mechanism for 3D printer and 3D printer22 Jul 2025US 12,366,284 B2Shenzhen Tuozhu Technology Co., Ltd.
- Transmission arrangement for a floor surfacing machine comprising a first and second idle pulley, both pivotable around a common pivot axis21 Jan 2025US 12,203,548 B2Husqvarna AB
- Mower drive belt tensioner and drive train of mower25 Jun 2026US 2026/0177133 A1Kubota Corporation
- Power transmission device, medium transport device, and recording device8 Jan 2026US 2026/0009451 A1Seiko Epson Corporation
- Snow blower23 Oct 2025US 2025/0327257 A1Milwaukee Electric Tool Corporation
- Belt tensioning mechanism for 3d printer and 3d printer16 Oct 2025US 2025/0320909 A1Shenzhen Tuozhu Technology Co., Ltd.
- Belt tension adjustment system5 Jun 2025US 2025/0180099 A1Husqvarna AB
Most cited
By later US patents
- Axle driving apparatus74US 6,125,630 ATuff Torq Corporation · 2000
- Two wheel synchronously driven bicycle35US 4,479,660 A1984
- Floating cutterbar knife drive29US 4,191,006 AInternational Harvester Company · 1980
- Device for the automatic regulation of the tension of a crenellated timing belt28US 4,077,272 AAlfa Romeo S.p.A. · 1978
- Power-delivery belt-tensioning system28US 4,781,665 AWalker Manufacturing Company · 1988