E05B 27/0053
Cylinder locks or other locks with tumbler pins or balls that are
Official title: {for use with more than one key, e.g. master-secondary key}
E05B27/0053 (Cylinder locks or other locks with tumbler pins or balls that are) appears on 88 US grants and 63 published applications in this corpus.
Search patents in E05B- Granted patents
- 88
- Published applications
- 63
- Assignees
- 50
- Inventors
- 115
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 0 | 2 |
| 2005 | 4 | 3 |
| 2006 | 0 | 5 |
| 2007 | 5 | 1 |
| 2008 | 3 | 4 |
| 2009 | 2 | 4 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 5 |
| 2013 | 1 | 3 |
| 2014 | 5 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 5 |
| 2018 | 0 | 1 |
| 2019 | 5 | 2 |
| 2020 | 1 | 4 |
| 2021 | 2 | 4 |
| 2022 | 3 | 0 |
| 2023 | 3 | 2 |
| 2024 | 2 | 4 |
| 2025 | 4 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Door lock with associated keys12 May 2026US 12,624,570 B2
- Lockset9 Dec 2025US 12,492,576 B2Taiwan Fu Hsing Industrial Co., Ltd.
- Lock core device based on matching multiple key cross-sectional shapes, its ball slot configuration method, and its corresponding locking key14 Oct 2025US 12,442,215 B2Taiwan Fu Hsing Industrial Co., Ltd.
- Rekeyable lock cylinder23 Sep 2025US 12,421,762 B2ASSA ABLOY Americas Residential Inc.
- Aircraft latch lock key19 Aug 2025US D1,088,806 S1Hartwell Corporation · Design
- Interchangeable core with offset control tumbler27 Aug 2026US 2026/0250986 A1Schlage Lock Company LLC
- Sequential use cylinder lock assembly and method thereof23 Jul 2026US 2026/0210158 A1
- Rekeyable lock cylinder19 Mar 2026US 2026/0078607 A1ASSA ABLOY Americas Residential Inc.
- Door lock with associated keys19 Jun 2025US 2025/0198195 A1
- Cylinder Lock With Secondary Locking Element Coupled to a Primary Pin Assembly19 Jun 2025US 2025/0198196 A1Assa Abloy High Security Group Inc.
Most cited
By later US patents
- Rotating pin tumbler side bar lock with side bar control87US 6,477,875 B2Medeco Security Locks, Inc. · 2002
- Pop-up, precision lock-cylinder that reveals at once, with visual and tactile cues, who else with a key has sought or gained entry59US 6,516,643 B12003
- Rekeyable master and user lock system with high security features57US 4,741,188 A1988
- Cylinder lock and method for using same42US 5,000,019 A1991
- Self-contained re-keyable lock41US 4,372,139 A1983