Identifying lock type.

[KFunk]

I'm curious as to what type of lock this is. It's a pin-tumbler, but it functions differently after it starts turning. After turning it about 145 degrees, it stops.

What is happening in the lock at this point? Is this a new picking point? I tried picking it, but don't feel the same spring tension. The lock can still be moved in the opposite direction, back to the starting point, but no further than the 145ish degrees.

Photo attached:

[2octops]

It looks like that deadbolt is still mounted to a door. If the tailpiece and bolt are still in place, that's all of the rotation you are going to get because that is the extent that the bolt is either retracting or extending.

[MBI]

What is this lock mounted on?

[KFunk]

It's mounted on a door, but it's not a deadbolt, at least not the mechanism that keeps the door from being opened. The mechanism is that of the angled D shape that's very common on doors, NOT the rod that you'd normally see in a deadbolt. From the other side, which I have easily picked, it will open the door with about a 140 degree turn.

[MBI]

Does it behave the same way when you try to open it with the key?

[cledry]

It's mounted on a door, but it's not a deadbolt, at least not the mechanism that keeps the door from being opened. The mechanism is that of the angled D shape that's very common on doors, NOT the rod that you'd normally see in a deadbolt. From the other side, which I have easily picked, it will open the door with about a 140 degree turn.

It is a gate latch, commonly used on pool gates at condos and the like. As Mb1 says, try it with your key and see if it operates correctly. You may have one or both tailpieces twisted (they should be straight and either overlap in the middle or cross. It is also possible to get the timing incorrect, resulting in improper operation.