SCHLAGE HIGH SECURITY: Upgrading Primus to Primus XP

The original Schlage Primus patent expired in 2007. New Primus XP patents extend through 2024. To gain additional patent protection, Schlage added a seventh depth finger pin and compatible side milling cut in the Primus key.


Schlage introduced the Primus™ high security lock cylinder during the fourth quarter of 1988. Schlage Primus was introduced with key-in-knob/lever, rim and mortise lock cylinders. Primus was Schlage Lock Company's entrance into the high security market place with patent protection. The...


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Test the operation of the finger pins by rotating the set-up key counterclockwise a few degrees. If the side milling depths and angles are the same as the finger pins, the plug will rotate forcing the sidebar to retract within the plug. If they are not, the plug will not be able to rotate. If the set-up key rotates, continue with Step 10. If not remove the finger pins and start over.

 

Step 10. Carefully rotate the plug counterclockwise 180 degrees until the pin chambers are vertical.

 

Step 11. Load each pin chamber with the correct bottom pin and if master keyed, the correct master wafer.

 

Step 12. Once each chamber is loaded, test the operation of the change key and the top master key. With either key inserted into the plug, only master wafers can be above the outer diameter of the plug.

 

Step 13. Using the set-up key, load the plug into the housing. Test the operation of the change key and the top level master key being careful the plug does not slide out of the housing.

 

Step 14. Assemble the lock cylinder.

 

Note: When combinating a Primus lock cylinder, the pin tumbler springs are different from the finger pin springs, and are not interchangeable.

The Primus and Primus XP lock cylinders are available as controlled access and UL437. Primus cylinders are available as key-in-knob/lever, mortise, full size IC, rim, padlock and cabinet lock cylinders.

The patented Schlage Primus XP lock cylinder's availability is controlled. The base Primus XP lock cylinders availability starts with a shared sidebar milling and no sole source relationship with your distributor or customer. The next level is a semi-restricted sidebar milling and a sole source relationship with your distributor. The remaining levels above this point are set by the degree of exclusivity and the accompanying restrictions. For more information, contact your local locksmith distributor or the factory.

For more information, contact your local locksmith wholesaler or Schlage , 111 Congressional Blvd., Carmel , IN 46032 . Telephone: 800-8471864. Fax: 800-452-0663. Web Site: www.schlage.com.  

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