F16L 55/34
The pig or mole being moved step by step
Official title: the pig or mole being moved step by step
F16L55/34 (The pig or mole being moved step by step) appears on 65 US grants and 51 published applications in this corpus.
Search patents in F16L- Granted patents
- 65
- Published applications
- 51
- Assignees
- 54
- Inventors
- 180
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 4 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 2 |
| 2019 | 2 | 5 |
| 2020 | 3 | 1 |
| 2021 | 3 | 10 |
| 2022 | 1 | 6 |
| 2023 | 7 | 2 |
| 2024 | 7 | 7 |
| 2025 | 7 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pipe navigation apparatus with bypass fluid channel12 May 2026US 12,624,788 B2GE Infrastructure Technology LLC
- System for traction inside pipes, with flexible reservoir and with motorized pump for hydraulic power24 Mar 2026US 12,584,583 B2Petroleo Brasileiro S.A. - Petrobras
- System and method including sensor array for characterization of conduits18 Nov 2025US 12,474,008 B2GE Infrastructure Technology LLC
- Pipe navigation apparatus with collapsible drive assembly29 Jul 2025US 12,372,190 B1GE Infrastructure Technology LLC
- Pipe inspection device with variable height control27 May 2025US 12,313,207 B2Envirosight LLC
- Robot for trenchless pipeline and manhole rehabilitation3 Sep 2026US 2026/0258897 A1
- Module forming a mechanical actuator of the muscle or fluidic bladder type, corresponding system and method of use2 Jul 2026US 2026/0185547 A1
- Robotic movement12 Feb 2026US 2026/0042499 A1ROLLS-ROYCE plc
- System and method for controlling a camera of a sewer inspection and/or maintenance system14 Nov 2024US 2024/0377014 A1iPEK International GmbH
- Robot for locomotion in interior spaces of pipes, and operating method12 Sep 2024US 2024/0300088 A1Voith Patent GmbH
Most cited
By later US patents
- Modular observation crawler and sensing instrument and method for operating same200US 6,450,104 B1North Carolina State University · 2002
- Pneumatic pipe inspection device150US 4,646,787 AInstitute of Gas Technology · 1987
- Pipeline vehicle117US 4,537,136 ASubscan Systems Ltd. · 1985
- Pneumatically operated pipe crawler105US 4,372,161 A1983
- Chain-like self-moving robot and control system therefor48US 4,621,532 AHitachi, Ltd. · 1986