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F04B 47/022

Driving of the walking beam

Official title: {driving of the walking beam}

F04B47/022 (Driving of the walking beam) appears on 157 US grants and 146 published applications in this corpus.

Search patents in F04B

Granted patents: 157
Published applications: 146
Assignees: 82
Inventors: 258
Latest grant: 26 May 2026

Filings by year

F04B 47/022: granted patents and published applications per publication year
Year	Granted patents	Published applications
1980	1	0
1981	2	0
1982	3	0
1983	4	0
1984	8	0
1985	6	0
1986	2	0
1987	2	0
1988	4	0
1989	0	0
1990	0	0
1991	1	0
1992	1	0
1993	3	0
1994	3	0
1995	2	0
1996	0	0
1997	0	0
1998	1	0
1999	0	0
2000	2	0
2001	4	2
2002	3	1
2003	1	0
2004	0	1
2005	1	2
2006	0	1
2007	0	1
2008	2	1
2009	0	1
2010	1	2
2011	2	1
2012	0	2
2013	1	9
2014	3	8
2015	3	8
2016	1	13
2017	9	22
2018	14	9
2019	10	13
2020	15	8
2021	12	9
2022	8	8
2023	7	7
2024	6	10
2025	5	4
2026	4	3

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Recent patents

Managing regenerative energy of reciprocating pumping unit26 May 2026US 12,637,929 B2Weatherford Technology Holdings, LLC
Electric cylinder driving device and walking beam pumping unit including electric cylinder driving device3 Mar 2026US 12,565,883 B2Shanghai Yingluo Electromechanical Technology Co., Ltd
Beam pumping unit and design method for beam pumping unit3 Feb 2026US 12,540,611 B2Apex Oilfield Equipment (Qingdao) Co., Ltd
Hydraulic powerhouse system for an oil well pumping unit3 Feb 2026US 12,540,612 B2
Managing regenerative energy of rod pump system without dynamic braking resistor14 Oct 2025US 12,445,078 B2Weatherford Technology Holdings, LLC

Most cited

By later US patents