Key and cylinder lock unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 10, 1998
Grant Date -
N/A
app pub date -
May 29, 1997
filing date -
Dec 27, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A key and cylinder lock unit, in which a key contains a shank provided with a pattern and with at least one movable member positioned at the front end thereof, the lock having a plug housed within a cylinder and provided with a plurality of substantially radial pins formed in two parts movable along corresponding radial channels provided partly in the plug and partly in the cylinder and, by way of springs, maintained with one end in the longitudinal seat provided in the plug for the insertion of the shank of the key. The plug contains along the seat a longitudinal groove closed at the key introduction end and housing the tapered end of all the pins, which completely traverse said seat. The movable member of the shank is of such shape as to be able to be deviated towards the longitudinal groove as a result of a progressive introduction of the shank into the seat, and to engage the end of successively encountered pins in order to shift them axially until they are able to slide along that surface of the shank comprising the pattern.
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