B23P 19/088
Piston rings in piston grooves
Official title: {Piston rings in piston grooves}
B23P19/088 (Piston rings in piston grooves) appears on 22 US grants and 10 published applications in this corpus.
Search patents in B23P- Granted patents
- 22
- Published applications
- 10
- Assignees
- 17
- Inventors
- 45
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piston ring cutting-off device27 Jan 2026US 12,533,758 B2Tpr Co., Ltd.
- Piston ring installation jig and piston ring installation method using the jig4 Feb 2025US 12,214,458 B2Subaru Corporation
- Method of manufacturing and manufacturing apparatus for a ring member attached product17 Nov 2020US 10,836,004 B2Hirata Corporation
- Auxiliary device for installing piston rings17 Oct 2017US 9,789,571 B2C.T.I. Traffic Industries Co., Ltd.
- Piston rail ring installer and method11 Oct 2016US 9,463,540 B2Honda Motor Co., Ltd.
- Apparatus for parts supply and lubricant application using robot1 Jan 2026US 2026/0001176 A1BRILS Co., Ltd.
- Piston ring installation jig and piston ring installation method using the jig14 Mar 2024US 2024/0082965 A1Subaru Corporation
- Piston Ring Cutting-Off Device28 Dec 2023US 2023/0415283 A1Tpr Co., Ltd.
- Method of manufacturing and manufacturing apparatus for a ring member attached product29 Nov 2018US 2018/0339379 A1Hirata Corporation
- Auxiliary device for installing piston rings2 Feb 2017US 2017/0028519 A1C.T.I. Traffic Industries Co., Ltd.
Most cited
By later US patents
- Method of assembling piston ring and method of assembling set oil ring and apparatus for assembling set oil ring13US 5,303,465 AHonda Giken Kogyo Kabushiki Kaisha · 1994
- Apparatus for dispensing rings and for applying piston rings to pistons12US 4,047,276 ADesigneers Midwest · 1977
- Unit for distributing and installing rings on pistons10US 4,967,459 ARenault Automation · 1990
- Machine for the automatic fitting of piston rings onto pistons10US 5,259,109 AFloquet Monopole · 1993
- Electro optic controlled piston ring installing apparatus6US 4,379,234 ACummins Engine Company, Inc. · 1983