Apparatus for indicating a closure state of a lock
OwnerUlrich Abelerinventor
Life of this patent
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Abstract
An apparatus indicates the closure state of a key-operated lock, having a housing that is fitted to the key and has a rotation detection sensor which is held therein and comprises a hollow body that is filled with a first electrically conductive liquid and has electrically conductive contacts for production of electrical contact sequences which are dependent on the closing direction, and having an electronic evaluation unit which uses the contact sequences to determine the closure state of the lock. The hollow body is substantially completely filled with the first electrically conductive liquid and with a second electrically non-conductive fluid that repels the first liquid.
Claims18
An apparatus for indicating a closure state of a key-operated lock, comprising:
- a housing mounted to a key keyed to the lock;
- a rotation direction sensor disposed in said housing and having:
- a hollow body substantially completely filled with a first electrically conductive fluid and with a second electrically non-conductive fluid repelling the first fluid;
- and
- electrically conductive contacts for production of electrical contact sequences in dependence on a position of the first fluid and the second fluid in said hollow body representing a closing direction;
- an electronic evaluation unit connected to receive the electrical contact sequences to determine the closure state of the lock.
Dependencies are inferred from the claim text.