F16H 55/50
Features essential to rope pulleys
F16H55/50 (Features essential to rope pulleys) appears on 53 US grants and 52 published applications in this corpus.
Search patents in F16H- Granted patents
- 53
- Published applications
- 52
- Assignees
- 40
- Inventors
- 130
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 0 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 4 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 3 |
| 2015 | 1 | 4 |
| 2016 | 1 | 6 |
| 2017 | 2 | 1 |
| 2018 | 3 | 2 |
| 2019 | 2 | 4 |
| 2020 | 3 | 2 |
| 2021 | 4 | 2 |
| 2022 | 1 | 4 |
| 2023 | 1 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Unitary fastener and cable guidance devices for helicopter block pulleys and methods of assembly and use10 Jun 2025US 12,327,986 B2Tallman Equipment Co.
- Pulley block8 Apr 2025US 12,269,717 B2
- Wire rope, sheave and drum21 Mar 2023US 11,608,593 B2Tokyo Rope Manufacturing Co., Ltd.
- High friction and wear resistant elevator sheave liner29 Nov 2022US 11,511,970 B2Otis Elevator Company
- Sheave19 Oct 2021US 11,149,836 B2
- Device for Cable Guide Pulley18 Jun 2026US 2026/0167466 A1
- Mechanical drive connection for driving a shaft in rotation by transmission under tension20 Feb 2025US 2025/0060025 A1Latecoere
- Pulley assembly24 Oct 2024US 2024/0351832 A1Treemagineers Ltd.
- Hubless sheave12 Oct 2023US 2023/0327412 A1Sherman + Reilly, Inc.
- Apparatus, system, and methods for a cable trolley device3 Aug 2023US 2023/0243412 A1
Most cited
By later US patents
- Rope drive element for driving synthetic fiber ropes34US 6,371,448 B1Inventio AG · 2002
- Method of replacing sheave liner33US 5,792,294 AOtis Elevator Company · 1998
- Sheave27US 4,413,981 A1983
- Elevator sheave for use with flat ropes19US 6,419,208 B1Otis Elevator Company · 2002
- Rubber-lagged sheave16US 4,441,692 AWyrepak Industries, Inc. · 1984