G01P 3/60
By measuring or comparing frequency of generated currents or voltages
Official title: by measuring or comparing frequency of generated currents or voltages {(frequency comparators H03K5/26)}
G01P3/60 (By measuring or comparing frequency of generated currents or voltages) appears on 52 US grants and 6 published applications in this corpus.
Search patents in G01P- Granted patents
- 52
- Published applications
- 6
- Assignees
- 41
- Inventors
- 83
- Latest grant
- 27 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 12 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for determining the tension of a drive belt27 Dec 2022US 11,536,741 B2Gebr. Bode GmbH & Co. KG
- Electrical equipment for connection to a tachometer for measuring a speed of rotation of a wheel of an aircraft landing gear12 Jan 2021US 10,890,601 B2Safran Landing Systems
- Methods, apparatuses and computer program products for determining speed of movement of a device and device pose classification30 Jun 2015US 9,069,003 B2Massachusetts Institute of Technology
- Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed1 Nov 2011US 8,050,832 B2ZF Friedrichshafen AG
- Single wire dual speed signal system10 Jul 2007US 7,243,016 B2General Motors Corporation
- Method for determining the tension of a drive belt24 Dec 2020US 2020/0400705 A1Gebr. Bode GmbH & Co. KG
- Electrical equipment for connection to a tachometer13 Dec 2018US 2018/0356442 A1Safran Landing Systems
- Underspeed detection device, associated ventilation system and vehicle29 Oct 2015US 2015/0309066 A1Technofan
- Methods, apparatuses and computer program products for determining speed of movement of a device and device pose classification31 Oct 2013US 2013/0289931 A1Massachusetts Institute of Technology
- Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed12 Nov 2009US 2009/0280948 A1ZF Friedrichshafen AG
Most cited
By later US patents
- Motor speed indicator215US 3,932,812 APeripheral Equipment Corporation · 1976
- Optical data collection apparatus and method used with moving members127US 4,724,317 ABaxter Travenol Laboratories, Inc. · 1988
- Slip speed sensor for a multiple link belt drive system105US 4,575,367 AGeneral Motors Corporation · 1986
- Vehicle speed control circuit63US 3,952,829 ADana Corporation · 1976
- Mechanical assemblies employing sensing means for sensing motion or position58US 4,259,637 ARansome Hoffmann Pollard Limited · 1981