E05D 13/1276
With coiled ribbon springs
Official title: {with coiled ribbon springs, e.g. constant force springs (E05D13/1253 takes precedence)}
E05D13/1276 (With coiled ribbon springs) appears on 124 US grants and 92 published applications in this corpus.
Search patents in E05D- Granted patents
- 124
- Published applications
- 92
- Assignees
- 48
- Inventors
- 135
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 3 |
| 2003 | 3 | 2 |
| 2004 | 1 | 5 |
| 2005 | 4 | 4 |
| 2006 | 3 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 3 |
| 2009 | 3 | 3 |
| 2010 | 3 | 1 |
| 2011 | 3 | 3 |
| 2012 | 2 | 4 |
| 2013 | 7 | 4 |
| 2014 | 5 | 8 |
| 2015 | 8 | 5 |
| 2016 | 5 | 5 |
| 2017 | 3 | 9 |
| 2018 | 5 | 2 |
| 2019 | 5 | 2 |
| 2020 | 3 | 4 |
| 2021 | 3 | 4 |
| 2022 | 4 | 3 |
| 2023 | 3 | 4 |
| 2024 | 6 | 3 |
| 2025 | 2 | 3 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adjustable retraction mechanism4 Aug 2026US 12,698,665 B2Elvo Ltd
- Window balance assembly with improved mounting bracket and curl spring attachment30 Jun 2026US 12,669,004 B1Vision Industries Group, Inc.
- Window balance assembly23 Jun 2026US 12,662,861 B2Assa Abloy Fenestration, LLC
- Window systems and components16 Jun 2026US 12,655,680 B2Newtonoid Technologies, L.L.C.
- Sash carrier for a window7 Apr 2026US 12,595,698 B2Pella Corporation
- Window Balance Assembly1 Oct 2026US 2026/0298002 A1Assa Abloy Fenestration, LLC
- Window Balance Assembly With Improved Brake Arrangement16 Apr 2026US 2026/0103928 A1Vision Industries Group, Inc.
- Adjustable retraction mechanism24 Jul 2025US 2025/0237101 A1Elvo Ltd
- Window Balance Assembly27 Feb 2025US 2025/0067100 A1Assa Abloy Fenestration, LLC
- Window Balance Assembly And Mounting Bracket Therefor27 Feb 2025US 2025/0067101 A1Assa Abloy Fenestration, LLC
Most cited
By later US patents
- Tilt-lock slide for window sash106US 4,227,345 A1980
- Coil spring counterbalance hardware assembly and connection method therefor103US 5,157,808 AProduct Design & Development, Inc. · 1992
- Curl spring shoe based window balance system84US 5,353,548 ACaldwell Manufacturing Company · 1994
- Constant force compensation for power spring weight balance74US 5,054,162 ASchlegel Corporation · 1991
- Sliding counterbalance assembly for a sash window73US 5,661,927 AAshland Products, Inc. · 1997