Illinois Duo - Revision history

Mgsecure: specs

2022-12-28T16:13:36Z

specs

← Older revision		Revision as of 16:13, 28 December 2022
Line 9:		Line 9:
	\|maker = [[Illinois Lock Company]]		\|maker = [[Illinois Lock Company]]
	\|patent =		\|patent =
			\| spec_on = true
			\| spec_comptype = [[Wafer]]
			\| spec_comp = 18
	}}		}}

Mgsecure: /* Principles of Operation */ link to key differs page

2022-12-19T14:54:53Z

Principles of Operation: link to key differs page

← Older revision		Revision as of 14:54, 19 December 2022
Line 18:		Line 18:
	== Principles of Operation ==		== Principles of Operation ==

	The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>2<sup>5</sup>2<sup>4</sup>) theoretical key differs. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref>		The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>2<sup>5</sup>2<sup>4</sup>) theoretical [[Differs\|key differs]]. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref>

	Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.		Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.

Mgsecure: Page Title/TOC fix

2022-12-19T14:08:55Z

Page Title/TOC fix

← Older revision		Revision as of 14:08, 19 December 2022
Line 1:		Line 1:
	=~~Duo=~~		<span style="font-size: 188%;">{{PAGENAME}}</span>
			----

	{{Lock model		{{Lock model

Mgsecure: moved Duo to Illinois Duo: match site naming conventions

2022-12-19T14:08:01Z

moved Duo to Illinois Duo: match site naming conventions

← Older revision

Revision as of 14:08, 19 December 2022

Sandplum: /* See also */

2021-03-10T21:30:07Z

Datagram at 21:50, 22 January 2010

2010-01-22T21:50:41Z

← Older revision		Revision as of 21:50, 22 January 2010
Line 20:		Line 20:

	Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.		Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.

			The key is made of nickel-silver and is non-reversible. The bow is stamped with an indirect key code.

	<div align="center"><gallery>		<div align="center"><gallery>

Datagram: Created page with '=Duo= {{Lock model |name = Duo |Img = File:Duo_cylinder.jpg |lock_type = Cylinder |lock_design = Wafer |maker = Illinois Lock Company |patent = }} The '''Duo''' is …'

2010-01-22T19:53:49Z

Created page with '=Duo= {{Lock model |name = Duo |Img = File:Duo_cylinder.jpg |lock_type = Cylinder |lock_design = Wafer |maker = Illinois Lock Company |patent = }} The '''Duo''' is …'

New page

=Duo=

{{Lock model
|name = Duo
|Img = File:Duo_cylinder.jpg
|lock_type = [[Cylinder]]
|lock_design = [[Wafer]]
|maker = [[Illinois Lock Company]]
|patent =
}}

The '''Duo''' is a [[UL 437]]-rated [[wafer]] lock made by [[Illinois Lock Company]]. The Duo uses a total of 18 wafers that interface with three active bitting surfaces on the bottom, top, and side of the key. The Duo is popular in the United States in laundromats, vending machines and money containers.

__TOC__

== Principles of Operation ==

The Duo functions similar to a traditional wafer locks but has some interesting differences. It uses 18 wafers, 14 of which are active. The Duo has four types of wafer: top (T), bottom (B), side (S), and profile (P). Top, bottom, and side wafers interact with their respective bitting surface on the key. Profile wafers are used to check the proper profile of the key throughout the lock, and are not moved by the key. The Duo uses five top, five bottom, four side, and four profile wafers. There are two bitting positions for top, bottom, and side wafers, giving the Duo 16,384 (2<sup>5</sup>*2<sup>5</sup>*2<sup>4</sup>) theoretical key differs. Wafers are arranged in the plug (from front to back) as follows: (T B) (S P) (T B) (S P) (B T) (S P) (T B) (S P) (T B)<ref>{{Ref pulford}} </ref>

Top/bottom and side/profile wafers are always paired and share a spring. All active wafers have anti-lockpicking notches that resembles a mushroom [[security pin]] design adapted for wafers.

<div align="center"><gallery>
File:Duo key.jpg| The Duo key.
File:Duo key bitting.jpg| Closeup of the bitting used by top and side wafers.
File:Duo misaligned.jpg| Wafers improperly aligned in the [[plug]].
File:Duo aligned.jpg| Wafers properly aligned in the plug.
</gallery></div>

== Disassembly instructions ==

The Duo is relatively easy to disassemble, but extremely difficult to re-assemble because of the interaction between wafers and springs.

# Remove the [[cam]] or C-clip.
# Remove the [[plug]].
# With no key inserted the wafers can be pushed out from the top or the bottom of the plug.

== Vulnerabilities ==

The Duo may be vulnerable to one of more of the following:

* [[Lockpicking]]
* [[Decoding]]
* [[Impressioning]]

== Gallery ==

<div align="center"><gallery>
File:Duo wafers 1.jpg| Wafers used in the Duo (bottom & top).
File:Duo wafers 2.jpg| Wafers used in the Duo (side & profile).
</gallery></div>

== References ==
<references />

== See also ==

* [[Wafer]]
* [[Illinois Lock Company]]
* [[UL 437]]

[[Category:Wafer locks]]
[[Category:Illinois Lock Company|Duo]]

← Older revision		Revision as of 21:30, 10 March 2021
Line 62:		Line 62:
	* [[UL 437]]		* [[UL 437]]


			[[Category:Lock models]]
	[[Category:Wafer locks]]		[[Category:Wafer locks]]
	~~[[Category:Illinois Lock Company\|Duo]]~~