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Hinged
A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation: all other translations or rotations being prevented, and thus a hinge has one degree of freedom. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges, like the elbow joint. History Ancient remains of stone, marble, wood, and bronze hinges have been found. Some date back to at least Ancient Egypt. In Ancient Rome, hinges were called cardō and gave name to the goddess Cardea and the main street Cardo. This name cardō lives on figuratively today as "the chief thing (on which something turns or depends)" in words such as ''cardinal''. According to the OED, the English word hinge is related to ''hang''. Door hinges ; Barrel hinge: A barrel hinge consists of a sectional barrel (the knuckle) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flexure Bearing
A flexure bearing is a category of flexure which is engineered to be compliant in one or more angular degrees of freedom. Flexure bearings are often part of compliant mechanisms. Flexure bearings serve much of the same function as conventional bearings or hinges in applications which require angular compliance. However, flexures require no lubrication and exhibit very low or no friction. Many flexure bearings are made of a single part: two rigid structures joined by a thin "hinge" area. A hinged door can be created by implementing a flexible element between a door and the door frame, such that the flexible element bends allowing the door to pivot open. Flexure bearings have the advantage over most other bearings that they are simple and thus inexpensive. They are also often compact, lightweight, have very low friction, and are easier to repair without specialized equipment. Flexure bearings have the disadvantages that the range of motion is limited, and often very limited for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draw Bridge
A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat. In some forms of English, including American English, the word ''drawbridge'' commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the narrower historical definition of the term where the bridge is used in a defensive structure. As used in castles or defensive structures, drawbridges provide access across defensive structures when lowered, but can quickly be raised from within to deny entry to an enemy force. Castle drawbridges Medieval castles were usually defended by a ditch or moat, crossed by a wooden bridge. In early castles the bridge might be designed to be destroyed or removed in the event of an attack, but drawbridges became very common. A typical arrangement would have the drawbridge immediately outside a gatehouse, consisting of a wooden deck with on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrollton New Orleans Hinge Brass Inside
Carrollton is the name of some places in the United States of America: *Carrollton, Alabama *Carrollton, Arkansas *Carrollton, Georgia *Carrollton, Illinois *Carrollton, Carroll County, Indiana *Carrollton, Hancock County, Indiana *Carrollton, Kentucky *Carrollton, Maryland, a former town now in the city of Baltimore *Carrollton Manor, a tract of land in Frederick County, Maryland, from which a signer of the U.S. Declaration of Independence, Charles Carroll of Carrollton, took his name *Carrollton, Mississippi *Carrollton, Missouri *Carrollton, New Orleans, a former town now in the city New Orleans, Louisiana *Carrollton, New York *Carrollton, Ohio *Carrollton, Texas, the largest city of this name in the United States *Carrollton, Virginia *New Carrollton, Maryland Other *Carrollton, Kentucky bus collision *Carrollton School of the Sacred Heart, an independent Catholic girls' school in Miami, Florida *Carrollton (band) *"Carrollton", a song by Suicideboys from ''I Want to Die in New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hang
Hang or Hanging may refer to: People * Choe Hang (other), various people * Luciano Hang (born 1962/1963), Brazilian billionaire businessman * Ren Hang (other), various people Law * Hanging, a form of capital punishment Arts, entertainment, and media Artwork * Hanging craft, a decorative or symbolic hanging object * Hanging scroll, a type of decorative art Music * ''Hang'' (Foxygen album), a 2017 album by the indie rock band Foxygen * ''Hang'' (Lagwagon album), an album by the punk band Lagwagon * "Hang", a song by Avail from their 1996 album ''4am Friday'' * " Hang out with You", a 2016 song recorded by American singer-songwriter Mary Lambert * "Hang", a song by Matchbox Twenty from their album ''Yourself or Someone Like You'' * Hang (instrument), a musical instrument Other uses * Meat hanging, a form of beef aging * Hang (computing), a computer malfunction * Hang (instrument), a musical instrument * "Hang in there", or "Hang in there, Baby", a popular cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time period. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. The word ''tremor'' is also used for non-earthquake seismic rumbling. At the Earth's surface, earthquakes manifest themselves by shaking and displacing or disrupting the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Mud
Bay mud consists of thick deposits of soft, unconsolidated silty clay, which is saturated with water; these soil layers are situated at the bottom of certain estuaries, which are normally in temperate regions that have experienced cyclical glacial cycles. Example locations are Cape Cod Bay, Chongming Dongtan Reserve in Shanghai, China, Banc d'Arguinpreserve in Mauritania, The Bristol Channel in the United Kingdom, Mandø Island in the Wadden Sea in Denmark, Florida Bay, San Francisco Bay, Bay of Fundy, Casco Bay, Penobscot Bay, and Morro Bay. Bay mud manifests low shear strength, high compressibility and low permeability, making it hazardous to build upon in seismically active regions like the San Francisco Bay Area. Typical bulk density of bay mud is approximately 1.3 grams per cubic centimetre. Bay muds often have a high organic content, consisting of decayed organisms at lower depths, but may also contain living creatures when they occur at the upper soil layer and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brisbane, California
Brisbane (pron. , unlike Brisbane, Queensland, Australia) is a small city located in California in the northern part of San Mateo County on the lower slopes of San Bruno Mountain. It is located on the southern border of San Francisco, on the northeastern edge of South San Francisco, next to San Francisco Bay and near San Francisco International Airport. The population was 4,851 as of the 2020 census. Brisbane is called "The City of Stars" because of a holiday tradition dating back to 1939. At the start of the Christmas/Hanukkah season, many residents and business owners place large, illuminated stars, some as big as or more in diameter, on the downhill sides of homes and offices throughout Brisbane. Many of the stars are kept up all year. Geography According to the United States Census Bureau, the city has a total area of , of which is land and (84.58%) is water, the latter the Brisbane Lagoon. A remnant of San Francisco Bay, the Lagoon was formed by the construction of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dakin Building
The Dakin Building is an architectural award-winning class A office building on the San Francisco Bay in Brisbane, California. Serving as a corporate headquarters building for several companies of national prominence, it was built from the profits of the Garfield character whose licensed products of the R. Dakin Company division of Applause Toys soared in sales in the late 1980s. Located on Sierra Point, it became a landmark in the San Francisco Bay Area for its distinctive design and was nicknamed the Luke Skywalker building for its dramatic posture overlooking the bay, in contrast to a neighboring office building with a dark, ominous appearance that was nicknamed the Darth Vader building. Ownership and history The Dakin Building was constructed in 1986 under commission of the R. Dakin Company, one of the largest manufacturers of plush products (mainly teddy bears) in the United States at that time. Dakin was in a large upswing of sales and profits in the late 1980s fueled by s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Architecture
Architecture is the art and technique of designing and building, as distinguished from the skills associated with construction. It is both the process and the product of sketching, conceiving, planning, designing, and constructing buildings or other structures. The term comes ; ; . Architectural works, in the material form of buildings, are often perceived as cultural symbols and as works of art. Historical civilizations are often identified with their surviving architectural achievements. The practice, which began in the prehistoric era, has been used as a way of expressing culture for civilizations on all seven continents. For this reason, architecture is considered to be a form of art. Texts on architecture have been written since ancient times. The earliest surviving text on architectural theories is the 1st century AD treatise '' De architectura'' by the Roman architect Vitruvius, according to whom a good building embodies , and (durability, utility, and beauty). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medieval
In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the Post-classical, post-classical period of World history (field), global history. It began with the fall of the Western Roman Empire and transitioned into the Renaissance and the Age of Discovery. The Middle Ages is the middle period of the three traditional divisions of Western history: classical antiquity, the medieval period, and the modern history, modern period. The medieval period is itself subdivided into the Early Middle Ages, Early, High Middle Ages, High, and Late Middle Ages. Population decline, counterurbanisation, the collapse of centralized authority, invasions, and mass migrations of tribes, which had begun in late antiquity, continued into the Early Middle Ages. The large-scale movements of the Migration Period, including various Germanic peoples, formed new kingdoms in what remained of the Western Roman Empire. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Door Closer
A door closer is defined as any mechanical device that closes a door in a controlled manner, preventing it from slamming, in general after someone opens it, or after it was automatically opened. The force used to open the door is stored in some type of spring and when released this energy is then used to return the door to a closed position. Door closers can be linked to a building's fire alarm system. Where doors need to be held open for the majority of the time they are held back with an electromagnetic device. When the fire alarm is triggered it cuts power to the electromagnetic hold-open device allowing the doors to close. These hold-open devices can be separate from the door closer or part of its design. Early history Gravity alone may be considered to be the first "door closer". Before any mechanical devices were attached to doors to close them, the way in which the door was hung automatically closed the door once opened. This technique to hang doors may have originated w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
