There are seven possible cuts for each bitting, which computes to 1,970,000,000 possible combinations. There are no wasted combinations.
The face of the lock may feature different keyways requiring the keys to be milled appropriately.
The key is half-round in cross section with angled bittings along its length. Six bitting angles are possible from 0 (no cut) to 90 degrees, with a 90-degree cut leaving a quarter circle of key profile. The keyway may have wards requiring the key to be milled out to a different profile to restrict access.
Master keying is possible as each disc may have additional grooves cut into it.
The original rotating disc concept has been around for 90 years and has been improved on many times.
Today there are two high-security versions: DISKLOCK PRO and PROTEC.
DISLOCK PRO keys have angles cut on opposing sides and are milled to accommodate a special keyway. There are dimples cut near the head of the key to align pins in the front of the cylinder. Key blanks are highly restricted.
PROTEC features DISKLOCK PRO cylinders with extensive hardened fronts. Cylinders are all-metal and one-piece for durability. Keys are covered for a lifetime.
For more information, contact your local locksmith distributor or Abloy Door Security, phone 800-465-5761 or web site www.abloy.ca.
BiLock keys are essentially a piece of metal bent into the shape of a “U”. There are two sets of bittings, one on each side of the “U”. Each set of bittings raises a set of pins. When properly aligned, each set of pins allows a sidebar to be recessed, thus allowing the plug to be rotated.
Originally the flat key blade blank is cut top and bottom with unique bittings, and then bent into the “U”-shape. The blade is then pressed into a plastic colored key head.
Each bitting is a set of six cuts. There are four depths per cut. There is no safety factor so each bitting generates 4,096 different keys. Both bittings generate 16,777,216 different keys.
When masterkeyed, the top master key can access 6,561 pages with 81 change keys on each page or 531,441 change keys.
The latest addition to BiLock’s keying system is “New Generation.” “New Generation” employs a moving element in the key that engages a horizontal security rod built into the core. Without this engagement the plug cannot rotate. The addition of the moving element was patentable thus the keys can only be provided by BiLock.
BiLock cylinders can optionally be configured so that the plug can be removed from the shell with a special core-removal key. This feature allows plugs to be quickly swapped for fast rekey.
For more information, contact your local locksmith distributor or BiLock North America, phone 800-328-7030 or web site www.bilock.com.
CORBIN RUSSWIN PYRAMID
The Corbin Russwin Pyramid is a patented, high security lock system incorporating unique pin tumbler specifications and the secondary, “Pyramid” locking mechanism. The “Pyramid” locking mechanism is operated by a spring-loaded control pin located on the bottom of the key blade. This control pin engages a locking pin built into the cylinder.
Additionally, a blocking plate on the under side of the plug is depressed and deactivated when the key is fully inserted.
The cylinders feature seven chambers and pin tumblers are made from hardened stainless steel. The employment of the seventh pin provides a four-fold increase of change-key possibilities when compared with other six-pin systems.
Pyramid high security locks are available in a number of proprietary Corbin Russwin keyways. Corbin Russwin determines pyramid keyway assignments. Keyway decisions are based on system requirements and geographic location. To maintain a high level of security, Pyramid key sections cannot be integrated into existing Corbin Russwin systems. Keys can be duplicated or originated using standard key cutting equipment.
Pyramid keys are patent protected against unauthorized key duplication through June 2018. Corbin Russwin Pyramid locks are available as security and high security (UL437 listed) versions.
For more information, contact your local locksmith distributor or Corbin Russwin, phone 800-543-3658 or web site www.corbinrusswin.com.