E04H 4/101
Wound-up on a fixed axis
Official title: {wound-up on a fixed axis}
E04H4/101 (Wound-up on a fixed axis) appears on 146 US grants and 120 published applications in this corpus.
Search patents in E04H- Granted patents
- 146
- Published applications
- 120
- Assignees
- 46
- Inventors
- 200
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 4 |
| 2002 | 10 | 8 |
| 2003 | 6 | 9 |
| 2004 | 5 | 6 |
| 2005 | 5 | 8 |
| 2006 | 5 | 8 |
| 2007 | 2 | 2 |
| 2008 | 2 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 5 |
| 2011 | 1 | 5 |
| 2012 | 1 | 2 |
| 2013 | 4 | 4 |
| 2014 | 3 | 2 |
| 2015 | 1 | 5 |
| 2016 | 4 | 2 |
| 2017 | 4 | 3 |
| 2018 | 3 | 4 |
| 2019 | 6 | 3 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 3 | 8 |
| 2023 | 2 | 6 |
| 2024 | 6 | 9 |
| 2025 | 6 | 5 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Swimming pool cover2 Jun 2026US 12,644,298 B1
- Bracket housing system and pool-cover bracket apparatus23 Dec 2025US 12,503,874 B1
- System and method for reversibly covering a zone14 Oct 2025US 12,439,864 B2Slide2Seal Ltd.
- Roller apparatus for a cover and method of use thereof8 Jul 2025US 12,351,426 B2
- Pool cover hinged sliding assembly8 Jul 2025US 12,352,069 B2Latham Pool Products, Inc.
- Non-conducting leading edge bar8 Oct 2026US 2026/0308930 A1Latham Pool Products, Inc.
- Low Offset Drive Motor Assembly for a Pool Cover17 Sep 2026US 2026/0275740 A1North Star Technology Limited
- Top track pool cover assembly and systems30 Apr 2026US 2026/0117544 A1Latham Pool Products, Inc.
- Filter System and Cover for Hot Tub or Pool12 Mar 2026US 2026/0071454 A1
- Support bracket assembly for pool cover box lid13 Nov 2025US 2025/0347135 A1
Most cited
By later US patents
- Leading edge and track slider system for an automatic swimming pool cover112US 4,939,798 A1990
- Closure assembly for structural members51US 5,163,495 A1992
- Closure device with a flexible screen47US 6,119,758 ADynaco International S.A. · 2000
- Closure assembly for structural members42US 5,351,742 A1994
- Track assembly for flexible enclosure covers42US 5,950,253 A1999