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Topic: Pin tumbler lock

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	Pin tumbler lock - Wikipedia, the free encyclopedia
		The pin tumbler lock is a lock mechanism that utilizes a group of pins of varying lengths to prevent opening the lock without the correct key.
		Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks.
		The basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door, and a horizontal bolt that slid into the post.
	en.wikipedia.org /wiki/Pin_tumbler_lock (575 words)

	Tubular pin tumbler lock - Wikipedia, the free encyclopedia
		The key pins (red) and driver pins (blue) are pushed towards the front of the lock, preventing the plug (yellow) from rotating.
		A tubular pin tumbler lock, also known as an "axial pin tumbler lock", is a variety of pin tumbler lock in which the pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
		Such locks can be picked by a special tubular lock pick with a minimum of effort; it is also possible to defeat them by drilling with a special “hole saw” drill bit.
	en.wikipedia.org /wiki/Tubular_pin_tumbler_lock (369 words)

	[No title]
		A series of pins that are divided at certain points must be raised to these dividing points in relationship to the separation between the cylinder wall and the shell of the lock by a key cut for that particular series of pin divi- sions.
		By picking the lock, you simply replace the function of a key with a pick that raises the pins to their "break- ing point," and using a tension wrench one rotates the cylinder to operate the cam at the rear of the lock's cylinder to unlock the mechanism.
		Some locks use pin tumblers that not only have to be aligned vertically within the cylinder, but also have to "twist" or turn a certain number of degrees to allow the cylinder to open.
	www.reachone.net /~jpete/lock/scrtlock.htm (9233 words)

	Lock-Picking Page: Pin Tumbler Locks (Site not responding. Last check: 2007-10-08)
		Considering the thousands of different companies mak- ing pin tumblers (different shaped keyways for each com- pany or design line), the chances of someone having a key that will work in your front door lock are one in many billions.
		Pin tumbler locks can easily be identified by peering down the keyway and locating the first round pin.
		The "hook" of the pick should be toward the tumblers (up in most cases, depending on whether or not the lock was mounted upside down-you can tell by look- ing down the keyway and locating the first pin with your pick).
	www.taylor.org /cody/locks/secrets/lp-pin.html (732 words)

	Notes on Picking Pin Tumbler Locks
		In the locked state the plug is prevented from rotating by a set of movable pin stacks, typically under spring pressure, that protrude from holes in the top of the opening in the shell into corresponding holes drilled into the top of the plug.
		In an ideal lock, all of the pin holes in the plug would be in perfect alignment with the corresponding holes in the shell, the centerline of the plug would be exactly parallel to that of the shell, and all of the pins would be exactly the same diameter.
		Pin tumbler lock picking consists of raising the cuts on each pin stack to the shear line, one by one, until the plug turns freely.
	www.crypto.com /papers/notes/picking (10032 words)

	Yale Lock History - Invention of the Yale Lock
		When inserted into the lock, the key pushes the bottom pins into the right position, which allows the user to turn the key and unlock the lock.
		a locking mechanisms in which a cylinder rotates to move a bolt; tumblers are pins; inserting the key lifts and aligns the pins to free the cylinder to rotate
		lock, yale lock, locking mechanism, cylinder lock, pin-tumbler lock, linus yale, linus yale jr, invention, history, inventor of, history of, who invented, invention of, fascinating facts.
	www.ideafinder.com /history/inventions/yalelock.htm (349 words)

	About Lock Museum (Site not responding. Last check: 2007-10-08)
		The newest of these is an extensive lock collection that includes a Cannon Ball Safe, 30 early era time locks, Safe Escutcheon Plates and a large number of British Safe Locks, Door Locks, Padlocks, Handcuffs and Keys.
		One of the attractions here is the original patent model of the Mortise Cylinder Pin Tumbler Lock designed by Linus Yale Jr., in 1865.
		There is a large display of locks and hardware made by Sargent and Co. in New Haven, Ct. Several early exit devices and door closers are on display as well.
	www.lockmuseum.com /about.htm (252 words)

	lock and key -- Britannica Student Encyclopedia
		Locks have been made that can be opened or closed by different keys but can be unlocked only by the key that closed them.
		To create the puzzle, four basic methods of keying are used in the construction of mechanical-type locks—warded, lever tumbler, pin tumbler, and wafer, or...
		The keying method used most often on door locks, and in many padlocks, is the pin tumbler lock.
	www.britannica.com /ebi/article-9275518 (881 words)

	Lock-Picking Page: Tips for Success
		You will undoubtedly encounter a pin tumbler lock in which there will be a pin or two that is keyed too low (the shear line of the pin is too high).
		If you bought this book to learn how to pick locks in order to become a more efficient burglar, then there is not a whole lot I can say or do to stop you.
		There isn't a locking device on earth that cannot be opened with means other than its key or code.
	www.taylor.org /cody/locks/secrets/lp-tips.html (2071 words)

	Lock (device) - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-08)
		A lock is a mechanical fastening device which may be used on a door, vehicle, or container.
		Commonly, it can be released by using a key or combination.
		Nuclear nuisance: a tall order for custom locks at Palo Verde Nuclear Generating Facility.
	encyclopedia.worldsearch.com /lock_(device).htm (144 words)

	Inventor of the Week: Archive
		Linus Yale, inventor of a popular and effective lock that uses a pin-tumbler cylinder design, was born in Salisbury, New York, on April 4, 1821.
		A second metal pin, or "driver," sits above the tumbler and is pushed down on the tumbler by a very small coil spring, which is permanently compressed as it sits inside the lock's enclosed case.
		Later he perfected the mechanism known as the "clock lock" and invented the double lock, which placed two locks within one case to be operated by the same or different combinations.
	web.mit.edu /invent/iow/yale.html (640 words)

	Linus Yale
		This lock was a "changeable type" which means that the key was made so you could take it apart to change the combination.
		Above the tumbler is a second metal pin, known as the "driver", which is pushed down on the tumbler by a very small coil spring.
		The plug is rotated by the key and in turn moves the bolt of the lock by means of a cam.
	www.northstar.k12.ak.us /schools/ryn/projects/inventors/yale/yale.html (719 words)

	MASTER LOCK 4-Pin Tumbler Lock : Locks Well Being, Safety & Security
		Pin Tumbler Lock, 1-1/8" Wide with 4 Pins
		Pin Tumbler Lock, 1-1/2" Wide with 4 Pins
		All orders will be shipped next day that are placed by 2pm your local time zone.
	www.ontimesupplies.com /4_Pin_Tumbler_Lock_skugroup_5863.html (98 words)

	(WO 03/087502) A DISCRIMINATING MECHANISM FOR A PIN TUMBLER LOCK (Site not responding. Last check: 2007-10-08)
		(57) A pin tumbler lock is provided with one or more additional chambers for housing a secondary locking member for engagement with a portion of a key.
		The invention also provides a lock system comprising a plurality of locks, each lock including two chambers.
		The lock system has a potential of N chamber positions to provide a substantial increase in the number of effective unique pin tumbler combinations that can be produced on the same key section or profile by allowing the same pin tumbler combination to be repeated with different locations of these additional chambers.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=03/87502.031023 (219 words)

	Annotated Bibliography of Linus Yale (Site not responding. Last check: 2007-10-08)
		He patented the pin-tumble cylinder lock and it was the most secure key operated lock.
		They weren't exactly the inventors of the pin tumbler lock; the ancient Egyptians were.
		There were 5 or 6 pin tumblers and the key must raise the pins the right height to unlock.
	northstar.k12.ak.us /schools/ryn/projects/inventors/yale/yalebib.html (799 words)

	Tubular pin tumbler lock -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		Tubular pin tumbler lock -- Facts, Info, and Encyclopedia article
		A tubular pin tumbler lock is a variety of (Click link for more info and facts about pin tumbler lock) pin tumbler lock in which the pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
		Locks of this type are commonly seen on (A wheeled vehicle that has two wheels and is moved by foot pedals) bicycle locks and vending machines.
	www.absoluteastronomy.com /encyclopedia/T/Tu/Tubular_pin_tumbler_lock.htm (87 words)

	Yale, Linus -- Encyclopædia Britannica
		His first achievement was the Yale Infallible Bank Lock in 1851.
		The first serious attempt to improve the security of the lock was made in 1778 when Robert Barron, in England, patented a double-acting tumbler lock.
		A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt.
	www.britannica.com /eb/article-9077744?tocId=9077744 (775 words)

	Pin Tumbler Locks :: Search Results (Site not responding. Last check: 2007-10-08)
		Today's animation demonstrates the basic concept of a pin-and-tumbler cylinder lock.
		His son improved upon his lock using a smaller, flat key with serrated edges that is the basis of modern pin-tumbler locks.
		The modern pin tumbler lock is quite simple, dating back to ancient Egypt but not commercially mass-produced until the...
	www.gpm-sprinklers.com /search/pin_tumbler_locks.html (85 words)

	Inventors and Inventions: Y - EnchantedLearning.com
		This very secure lock is still widely in use today in car doors and the outside doors of buildings.
		The cylinder pin-tumbler lock consists of (usually 5) pairs of bottom pins and top drivers, held in position by springs.
		When the right key is put into the lock, the bottom pins are pushed to the right position, allowing the key to turn and the lock to unlock.
	www.enchantedlearning.com /inventors/indexy.shtml (414 words)

	ipedia.com: Locksmithing Article (Site not responding. Last check: 2007-10-08)
		Locksmithing is the science and art of making and defeating locks.
		A lock is a mechanism that secures buildings, rooms, cabinets, or other storage facilities from theft by burglars.
		A key is usually used to open a lock.
	www.ipedia.com /locksmithing.html (156 words)

	Surface Mounted Pin Tumbler Door Lock (Specialty Hardware for Cabinets) (Site not responding. Last check: 2007-10-08)
		Door lock can be used for right or left doors.
		Click Here for more details and the current price on the vendor's website for their Surface Mounted Pin Tumbler Door Lock.
		This Surface Mounted Pin Tumbler Door Lock product is carried by a family-run company, established in 1954, widely known as "the woodworking superstore." They have the tools, wood, and plans you're looking for.
	www.thingsworthhaving.com /wood/tools/665.html (130 words)

	home improvement : Bent Cam 5-Pin Tumbler Mailbox Lock (Site not responding. Last check: 2007-10-08)
		This bed/bath knob, with a turn-piece locking mechanism, is designed for interior applications where privacy is required.
		This product features the Weiser Lock Brilliance Anti-Tarnish Exterior Finish, which is warranted to never tarnish, corrode, or discolor for the lifetime of the lock.
		Weiser Lock Beverly keyed entry knob/ single cylinder deadbolt combination pack in bright brass finish.
	www.makingithome.com /250319197/index2333.html (1054 words)

	master pin tumbler lock - Find, Compare, and Buy at Shopping.com
		MASTER LOCK (3D) Pin Tumbler Lock 1-1/2IN Wide with 4 Pins (In stock)
		MASTER LOCK (7D) Pin Tumbler Lock 1-1/8IN Wide with 4 Pins (In stock)
		Large selection of lock pin kits for all sorts of locks.
	www.shopping.com /xGS-master_pin_tumbler_lock (524 words)

	The Hardware Hut - Product #NCL-C8178-26D-KA915 - National 7/8in. Pin Tumbler Drawer Lock - Keyed Alike (Dull Chrome)
		Pin Tumbler Drawer Lock - Keyed Alike (Dull Chrome)
		This dead bolt type pin tumbler drawer lock from National Cabinet Locks is for surface mount applications and can be keyed together with all other pin tumbler locks.
		New re-keying feature allows you to remove cylinder while the lock satys in place.
	www.thehardwarehut.com /catalog-product.php?p_ref=17896 (109 words)

	Pin Tumbler Lock, 2" Wide with 4 Pins - MASTER LOCK 5D MLK5D
		Pin Tumbler Lock, 2" Wide with 4 Pins - MASTER LOCK 5D MLK5D
		Pin Tumbler Lock, 2" Wide with 4 Pins MASTER LOCK 5D MLK5D > RUSH DELIVERY
		To buy this product, enter your desired quantity in the textbox to the right and click on the "Add To Cart" button.
	ontimesupplies.com /Pin_Tumbler_Lock_2_Wide_with_4_Pins_item_MLK5D.html (102 words)

	Twin Brass 3-Pin Tumbler Lock
		Two locks, two keys per pack; keys match both locks.
		Twin Brass 3-Pin Tumbler Locks, 3/4" Wide, 2 Locks/Keys per Pack
		• Made in U.S.A. of 30% recycled steel Locking cabinet keeps maximum control of keys with designated master and duplicate key tags.
	www.keysan.com /big/picxmlk2145.html (101 words)

	eBay - pin tumbler, Tools, Hardware Locks, Industrial Supply, MRO items on eBay.com
		Twin Brass 3-Pin Tumbler Locks, 3/4" Wide, 2
		Pin Tumbler Lock, 1-1/8" Wide with 4 Pins - MLK7D - 7D
		Pin Tumbler Lock, 2" Wide with 4 Pins - MLK5D - 5D
	search-desc.ebay.com /search/search.dll?query=pin+tumbler&newu=1&krd=1 (391 words)

	hpcworld - Picking of the 7 Pin Tumbler Lock (Site not responding. Last check: 2007-10-08)
		The ability to service tubular locks can set you apart from your competitors; the first step in servicing the lock is the ability to pick it open.
		This tape and workbook set will teach you the origin of the tubular lock, proper selection of tools and how to pick various types of tubular locks.
		Just play the tape and refer to the book while listening for a clearer understanding of the directions being given.
	www.hpcworld.com /Books/b_aa2.htm (125 words)

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