FIELD: mechanical engineering. SUBSTANCE: this relates to devices suitable for closing keyholes of any kind of locks. Mounted on base having hole for key is turnable shutter with hole corresponding to hole in base. Shutter is locked relative to base by interlocking magnetic elements, and holder which is installed coaxially to base is fixed relative to shutter also by interlocking magnetic members. Holder is installed for possible turning. Device is opened by magnetic key. Opening system is of three-stage type. EFFECT: high efficiency. 1 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| REMOVABLE CODING MAGNETOMECHANICAL DEVICE FOR PROTECTION OF KEY HOLES | 1998 |
|
RU2124615C1 |
| CODED MAGNETOMECHANICAL LOCK | 1997 |
|
RU2117128C1 |
| KEY-HOLE PROTECTION DEVICE | 2005 |
|
RU2279518C1 |
| CODED MAGNET-MECHANICAL LOCK | 1995 |
|
RU2101449C1 |
| SECRECY MECHANISM WITH FREE LOCKING MEMBERS | 2003 |
|
RU2253726C1 |
| SECRECY MECHANISM FOR HIGH-RELIABILITY LOCK WITH INCREASED RESISTANCE TO BREAKING-IN | 2003 |
|
RU2253724C2 |
| CODE MAGNETOMECHANICAL LOCK | 1994 |
|
RU2079629C1 |
| MULTIFUNCTIONAL LOCK OF HIGHER RELIABILITY | 1997 |
|
RU2115789C1 |
| LOCK | 1996 |
|
RU2105119C1 |
| LOCK | 1997 |
|
RU2108435C1 |
