minifhncc wrote:Just a general question. Since I'm not in the USA I'm not familiar with locks there...
I see USPS locks quite often. What are these for? Do all mailboxes have these kind of locks, or is it just for PO boxes?
Also, are the blanks for those locks patented?
They are used in communities that have ganged boxes, apartments, condos and some housing areas. Each person has an individual key to their box, there is a special key used by the delivery person to open a big door on the back so they can insert the mail into the individual boxes. If the item won't fit in the box there is often a parcel box and the key to it will be put in your mailbox so you can retrieve your parcel. The keys to individual boxes are not patented and are freely available and may be duplicated just about anywhere. The key shown is for the back and is patented and unlawful to duplicate even if you had a blank.
Within the post offices they also rent boxes, the individual keys for these are unlawful to duplicate even though the blanks are available if you know where to look.