LEVER LOCK Russian patent published in 2015 - IPC E05B25/00 

FIELD: construction.

SUBSTANCE: lever lock, comprising a body, a cover, a single-bit key, a bolt, as a rule from several bars of high-strength metal, levers, differing by the fact that the single-bit key via the body by means of its ledges and slots interacts with the set of levers that find their position by gravity, made of high-strength metal and having a hole in the upper part of their bodies for an axis common for all levers and fixed on the body, and also on each lever there is a free motion slot for the second common axis fixed on the body, and in the lower part of levers there are slots of for the counterpart of a sear protruding from its upper part, besides, these slots are matched on one line only in position, when the key is turned to the full opening position, and each lever moves by height of the ledge or bit in the single-bit key. The sear interacts with the axis fixed on the body, and on the lower part of the sear there is a ledge for limitation of bolt travel in the open position and a groove for a ledge on the upper part of the bolt, interacting with the sear and not making it possible for the bolts to move with the key taken out, and the bolt interacts with the lever via a pin and a slot on the lever, and the second end of the lever via the second slots interacts with a bushing rigidly fixed with an opening handle, and the bushing interacts with the door latch via the second lever, a traction rod on the bushing and with the first lever, besides, the latch has a spring interacting with the body, and on the lower part of all levers there are false slots.

EFFECT: increased reliability.

2 dwg