When a valid access is activated, the silent motor will retract the latch bolt
and pushpad to allow ingress.
The latch bolt
, which is similar to a common springlatch, has a small auxiliary bolt along its side that when depressed, blocks the main bolt from being forced.
antivandal product that protects the latch bolt
area against prying.
In the case of a door latch bolt
, a recessed section between the head and the hexagonal collar is formed with a segmental tool with inserts that open and close.
A stainless latch bolt head made by the Presmet Corp.
Grand prizes in the 1990 Powder Metallurgy Part-of-the-Year Design Competition went to a 50-pound downhole bit (background), a three-piece solenoid assembly and a stainless-steel latch bolt, and four knife-bolsters and a steel bolt bar
When the touch bar is pushed, an internal spring resists the force, preventing the latch bolt
from retracting, keeping the door closed, and controlling damage to internal parts.
A gap could allow thieves to pry open the latch bolt with a credit card or similar device.
When a lock is installed, the latch bolt is designed to enter the hole in the door strike.
The pivoting lip, or keeper, holds the latch bolt
of the manual door lock in the pocket.