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Schlage Primus Design US Patent 4756177 July, 1988
Schlage (pronounced ) is an American lock manufacturer founded in 1920 by Walter Schlage. Schlage was headquartered in San Francisco from its inception until it relocated to Colorado Springs, Colorado in 1997. Schlage also produces high-security key and cylinder lines Primus, Everest, and Everest Primus XP. Schlage is one of the most popular brands of consumer and commercial locks in the United States. History The Schlage Manufacturing Company was founded by inventor Walter Schlage (d. 1946) in 1920 with the help of three businessmen who each contributed $10 to become equal partners. Walter Schlage had already secured several patents dating back to 1909, when he patented a doorknob that would also complete an electrical circuit so that, for instance, the lights would turn on when the door was opened. However, Schlage's key invention was the bored cylindrical lock, which evolved through several iterations, including a 1917 filing for a mortise mechanism which locked wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Schlage
Walter Reinhold Schlage (1882–1946) was a German-born American engineer and inventor. Known as the ''Lock Wizard of Thuringia'', he is best known for the bored cylindrical lock and the lock company that bears his name, Schlage Lock Co. Early training and travels Early on in his life, his father recognized his aptitude for mechanics and academics and worked on his behalf to have his son admitted to the Carl Zeiss Optical Works in Jena, Germany. During his apprenticeship, Schlage learned drafting, applied mechanics and engineering. After four years, he graduated with a special award of merit, as a result of his applied scholarship. Walter developed a sense of adventure whetted by guests that stayed in his father's hotel, in Thuringia, Germany. Following his training he left Germany for London where he worked as an instrument maker for Hileger, Ltd. Lasting a year in England, he emigrated to the United States where he gained employment with the Western Electric Company. Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drummers Key
A drummer is a percussionist who creates music using drums. Most contemporary western bands that play rock, pop, jazz, or R&B music include a drummer for purposes including timekeeping and embellishing the musical timbre In music, timbre ( ), also known as tone color or tone quality (from psychoacoustics), is the perceived sound quality of a musical note, sound or musical tone, tone. Timbre distinguishes different types of sound production, such as choir voice .... The drummer's equipment includes a drum kit (or "drum set" or "trap set"), which includes various drums, cymbals and an assortment of accessory hardware such as pedals, standing support mechanisms, and drum sticks. Particularly in the traditional music of many countries, drummers use individual drums of various sizes and designs rather than drum kits. Some use only their hands to strike the drums. In larger ensembles, the drummer may be part of a rhythm section with other percussionists playing. These m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shapeways
Shapeways, Inc. is a global, 3D printing marketplace and service, publicly traded company. Users design and upload 3D printable files, and Shapeways prints the objects for them or others. Users can have objects printed in over 55 materials and finishes, these include: plastics, precious metals, steel and food-safe ceramics, which were discontinued and have been replaced by porcelain materials. As of 2021, Shapeways has printed and sold more than 20 million objects. History Early history Shapeways began as a spin-off of Royal Philips Electronics, the Netherlands in 2007. It was founded by Peter Weijmarshausen, Robert Schouwenburg and Marleen Vogelaar and the idea came forth at the Philips design department. The concept and venture plan was initially created in 2005 by Dolf Wittkämper within the `Philips Lifestyle Incubator` program which offers support for start-up companies with innovative ideas. In 2008 a service was launched that allowed customers to design their own ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flatbed Scanner
An image scanner—often abbreviated to just scanner—is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Commonly used in offices are variations of the desktop ''flatbed scanner'' where the document is placed on a glass window for scanning. ''Hand-held scanners'', where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical. Modern scanners typically use a charge-coupled device (CCD) or a contact image sensor (CIS) as the image sensor, whereas ''drum scanners'', developed earlier and still used for the highest possible image quality, use a photomultiplier tube (PMT) as the image sensor. A ''rotary scanner,'' used for high-speed document ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DEF CON
DEF CON (also written as DEFCON, Defcon or DC) is a hacker convention held annually in Las Vegas, Nevada. The first DEF CON took place in June 1993 and today many attendees at DEF CON include computer security professionals, journalists, lawyers, federal government employees, security researchers, students, and hackers with a general interest in software, computer architecture, hardware modification, conference badges, and anything else that can be "hacked". The event consists of several tracks of speakers about computer- and hacking-related subjects, as well as cyber-security challenges and competitions (known as hacking wargames). Contests held during the event are extremely varied, and can range from creating the longest Wi-Fi connection to finding the most effective way to cool a beer in the Nevada heat. Other contests, past and present, include lockpicking, robotics-related contests, art, slogan, coffee wars, scavenger hunt and Capture the Flag. Capture the Flag (CTF) is p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master Keying
A master key operates a set of several locks. Usually, there is nothing special about the key itself, but rather the locks into which it will fit. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key), which cannot operate any of the others in the set, and the master key, which operates all the locks in the set. Locks that have master keys have a second set of the mechanism used to operate them that is identical to all of the others in the set of locks. For example, master keyed pin tumbler locks often have two shear points at each pin position, one for the change key and one for the master key. A far more secure (and more expensive) system has two cylinders in each lock, one for the change key and one for the master key. Master keyed lock systems generally reduce overall security. The fact that some pin chambers have two shear points allows for more options when picking and it also allows for more keys t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirror Image
A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an optical effect it results from reflection off from substances such as a mirror or water. It is also a concept in geometry and can be used as a conceptualization process for 3-D structures. In geometry and geometrical optics In two dimensions In geometry, the mirror image of an object or two-dimensional figure is the virtual image formed by reflection in a plane mirror; it is of the same size as the original object, yet different, unless the object or figure has reflection symmetry (also known as a P-symmetry). Two-dimensional mirror images can be seen in the reflections of mirrors or other reflecting surfaces, or on a printed surface seen inside-out. If we first look at an object that is effectively two-dimensional (such as the writing on a card) and then turn the card to face a mirror, the obj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schlage Everest Check-Pin Comparison
Schlage (pronounced ) is an American lock manufacturer founded in 1920 by Walter Schlage. Schlage was headquartered in San Francisco from its inception until it relocated to Colorado Springs, Colorado in 1997. Schlage also produces high-security key and cylinder lines Primus, Everest, and Everest Primus XP. Schlage is one of the most popular brands of consumer and commercial locks in the United States. History The Schlage Manufacturing Company was founded by inventor Walter Schlage (d. 1946) in 1920 with the help of three businessmen who each contributed $10 to become equal partners. Walter Schlage had already secured several patents dating back to 1909, when he patented a doorknob that would also complete an electrical circuit so that, for instance, the lights would turn on when the door was opened. However, Schlage's key invention was the bored cylindrical lock, which evolved through several iterations, including a 1917 filing for a mortise mechanism which locked wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweden
Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, Finland to the east, and is connected to Denmark in the southwest by a bridgetunnel across the Öresund. At , Sweden is the largest Nordic country, the third-largest country in the European Union, and the fifth-largest country in Europe. The capital and largest city is Stockholm. Sweden has a total population of 10.5 million, and a low population density of , with around 87% of Swedes residing in urban areas in the central and southern half of the country. Sweden has a nature dominated by forests and a large amount of lakes, including some of the largest in Europe. Many long rivers run from the Scandes range through the landscape, primarily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torshälla
Torshälla () is a locality situated in Eskilstuna Municipality, Södermanland County, Sweden with 7,612 inhabitants in 2010. It is mainly known for steel manufacturing, centered on the Nyby Bruk steel mill, and also for its historic old town centre. Because of its historic town status, from 1317 to 1971, Torshälla is customarily referred to as a ''stad'' (''town'' or ''city'') even though it does not have a population of 10,000, which is the limit presently in use defined by Statistics Sweden. Before the local government reform of 1971 Torshälla was an independent municipality. A new proposal to detach Torshälla from Eskilstuna Municipality was turned down in a referendum in 2006. History Foundation and early history Torshälla is one of the oldest towns in Sweden and received city rights as early as 1317 from King Birger. The oldest part of the town church is from the 12th century; however, the church was likely built on top of, or close to, the site of an earlier O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keyhole
A lock is a mechanical or electronic fastening device that is released by a physical object (such as a key, keycard, fingerprint, RFID card, security token or coin), by supplying secret information (such as a number or letter permutation or password), by a combination thereof, or it may only be able to be opened from one side, such as a door chain. A key is a device that is used to operate a lock (to lock or unlock it). A typical key is a small piece of metal consisting of two parts: the ''bit'' or ''blade'', which slides into the keyway of the lock and distinguishes between different keys, and the ''bow'', which is left protruding so that torque can be applied by the user. In its simplest implementation, a key operates one lock or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token for access to the locked area; locks are meant to only allow persons having the correct key to open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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