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96Fail Safe and Fail Secure Electric Locking Devices
Definition Basically: Fail Safe = power off, it's unlocked Fail Secure = power off, it's locked Electric locking devices include: Electric strikes Electromagnetic locks Electromechanical locks ...
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88Door Closer Adjustment
See also: Door Closer Basics This article is primarily about surface mounted door closers, but the ideas herein can be applied to other kinds of door closers as well. Door closer adjustment is an art that...
17 comments79Exit Device and Panic Hardware Basics
Introduction The terms "crash bar", "panic bar", and "exit device" all mean the same thing. Exit devices are used on doors in the path of egress in buildings built to accomodate numbers of people. Facilities...
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75USPS Approved Mailboxes - FAQ
These questions and answers apply to multi-unit mailboxes in the United States, such as the one pictured at right. Q: I lost my mailbox key. Can I get a new mailbox key from the Post Office? A: No, you...
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89Multi-Point Locking Systems
Most locking systems are single-point locking systems, which is to say they lock into a single plate on the frame of the door. Single-point locks include most cylindrical, tubular, and mortise locks. An...
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82mortise lock functions
One of the biggest advantages of specifying mortise locks over other types of locks is the great variety of functions available. In this article I will discuss mortise locks for use in commercial /...
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94When Your Key Won't Turn
Someday you might come home or go to open up your business and find that your key won't turn at all, not even a little. There are several reasons this might occur. At right, illustrations show the operation...
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79Door Closer Basics
See also: Door Closer Adjustment A door closer is a spring-loaded hydraulic device that closes a door automatically. The most common kind of door closer is the surface mounted door closer, so called...
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74Basic Magnetic Lock System
Electromagnetic locks are widely used in commercial and industrial applications. The lock is usually mounted on the header above the door and the armature is usually mounted on the door (see drawing below)....
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69ASSA ABLOY Mobile Innovation Showroom
This article provides a broad overview of some of the new products featured in the ASSA ABLOY Mobile Innovation Showroom (shown above). Top right, the Yale inTouch touch screen stand alone electronic...
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