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Watergun
A water gun (or water pistol, water blaster, or squirt gun) is a type of toy gun designed to shoot jets of water. Similar to water balloons, the primary purpose of the toy is to soak another person in a recreational game such as water fight. Historically, water guns were made of metal and used rubber squeeze bulbs to load and propel water through a nozzle like a Pasteur pipette. While the oldest surviving example of a squirt gun dates to J.W. Wolff's June 30, 1896 patent, the oldest known reference to a squirt gun is dated thirty-one years prior, with General William T. Sherman's 1865 quote regarding the effort to quell secession: "Why, you might as well attempt to put out the flames of a burning house with a squirt-gun." For several years in the United States and Canada, import regulations and domestic laws have required ''squirt guns'' to be made of clear or tinted transparent plastic to make them harder to mistake for actual firearms. Types Squeeze bulbs Akin to wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toy Gun
Toy guns are toys which imitate real guns, but are designed for recreational sport or casual play by children. From hand-carved wooden replicas to factory-produced pop guns From Gilroy Gardens and cap guns, toy guns come in all sizes, prices and materials such as wood, metal, plastic or any combination thereof. Many newer toy guns are brightly colored and oddly shaped to prevent them from being mistaken for real firearms. Types Wooden guns are made to resemble real guns. Often handmade, these toys may or may not have metal parts and are made with various levels of detail. Rubber band guns, are toy gun used to fire one or more rubber bands (or "elastic bands"). Rubber band guns are often used in live-action games such as Assassins, in which they are common and popular toy weapons. They are also common in offices and classrooms. Rubber band guns have been popular toys that date back to the invention of rubber bands, which were patented in England on March 17, 1845 by Step ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Check Valve
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid ( liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal. An important concept in check valves is the cracking pressure which is the minimum differential upstream pressure between inlet and outlet at which the valve will oper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entertech
Entertech was a brand of battery-powered motorized water guns sold in the United States from 1985 to 1990 by the now-defunct LJN. Unlike the colorful designs of many of the simple hand powered pump water guns of that time, most of the Entertech water guns were manufactured from black plastics with a matte finish to resemble real firearms. Marketing materials and television spots tout, "The look! The feel! The sound! So real! Entertech!" These powerful water guns offered a breakthrough to an existing market of squirt guns that are mostly inexpensive clear-colored plastic, hand powered, with poor effective range. The Entertech line boasts realistic looks and water storage mostly in the form of detachable magazines like their real firearm counterparts. The motorized water pumps make noises that, though not realistic, add an extra level of sensation. All of the guns except the Enforcer shotgun model have a fully automatic rate of fire (approximately 60 rpm) and a 30-foot effective ran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assassin (game)
Assassin (also Killer) is a live-action game in which players try to eliminate one another using mock weapons, in an effort to become the last surviving player. Assassin is particularly popular on college campuses; several universities have a dedicated "Assassins' Guild" society, which organizes games for their members. Gameplay occurs at all hours and in all places unless otherwise disallowed by the rules. Since an elimination attempt could occur at any time, successful players are obliged to develop a degree of vigilance. Gameplay The Assassin game has several published variants, such as the Steve Jackson book '' Killer: The Game of Assassination'', first published in 1982, and different guilds tend to create their own sets of rules and procedures. As such, the specific style of play is likely to vary between one group and the next. Rules Game hosts (also called umpires or referees) begin by advertising that a game is being set up and instruct potential players to send in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Balloon
A water balloon or water bomb is a balloon, often made of latex rubber, filled with water. Water balloons are used in a summer pastime of cooling off through water balloon fights. Water balloons are also popular for celebrations, including celebrating Holi and Carnival in India, Nepal, and several other countries. Types Water balloons are common in sizes from though larger sizes are available. Typically water balloons are sold in quantity and often include a filling nozzle in the packaging. Many of the low cost brands use small water balloons and generic nozzles which both tend to be difficult to use. Another form of water bomb is a sheet of paper folded to form a container capable of holding water. These are then filled and used in a similar way to latex versions. Gas balloons ( air or helium types) may be used as water balloons, but are not typically preferred because the balloon wall thickness is different. A water balloon is designed to be filled up to the approximat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Warfare
Water conflict is a term describing a conflict between countries, states, or groups over the rights to access water resources. The United Nations recognizes that water disputes result from opposing interests of water users, public or private. A wide range of water conflicts appear throughout history, though rarely are traditional wars waged over water alone. Instead, water has historically been a source of tension and a factor in conflicts that start for other reasons. Water conflicts arise for several reasons, including territorial disputes, a fight for resources, and strategic advantage. Water conflicts can occur on the intrastate and interstate levels. Interstate conflicts occur between two or more neighboring countries that share a transboundary water source, such as a river, sea, or groundwater basin. For example, the Middle East has only 1% of the world's freshwater shared among 5% of the world's population. Intrastate conflicts take place between two or more parties in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mattel
Mattel, Inc. ( ) is an American multinational toy manufacturing and entertainment company founded in January 1945 and headquartered in El Segundo, California. The company has presence in 35 countries and territories and sells products in more than 150 countries. The company operates through three business segments: North America, International, and American Girl. It is the world's second largest toy maker in terms of revenue, after The Lego Group. Two of its historic and most valuable brands, Barbie and Hot Wheels, were respectively named the top global toy property and the top-selling global toy of the year for 2020 and 2021 by The NPD Group, a global information research company. The name of the company is a portmanteau of the names of two of the company's founders; the surname of Harold Matson and the first name of Elliot Handler. History Origins and early years Harold "Matt" Matson, Ruth Handler, and Elliot Handler founded Mattel as Mattel Creations in January 1945 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristaltic Pump
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made. The rotor has a number of "wipers" or "rollers" attached to its external circumference, which compress the flexible tube as they rotate by. The part of the tube under compression is closed, forcing the fluid to move through the tube. Additionally, as the tube opens to its natural state after the rollers pass, more fluid is drawn into the tube. This process is called peristalsis and is used in many biological systems such as the gastrointestinal tract. Typically, there will be two or more rollers compressing the tube, trapping a body of fluid between them. The body of fluid is transported through the tube, toward the pump outlet. Peristaltic pumps may run continuous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring (device)
A spring is an elastic object that stores mechanical energy. In everyday use the term often refers to coil springs, but there are many different spring designs. Modern springs are typically manufactured from spring steel, although some non-metallic objects like the bow are also springs. When a conventional spring, without stiffness variability features, is compressed or stretched from its resting position, it exerts an opposing force approximately proportional to its change in length (this approximation breaks down for larger deflections). The ''rate'' or ''spring constant'' of a spring is the change in the force it exerts, divided by the change in deflection of the spring. That is, it is the gradient of the force versus deflection curve. An extension or compression spring's rate is expressed in units of force divided by distance, for example or N/m or lbf/in. A torsion spring is a spring that works by twisting; when it is twisted about its axis by an angle, it produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spyra GmbH
Spyra is a surname. Notable people with the name include: * Janusz Spyra (born 1958), Polish historian * Wolfram Spyra (born 1964), German composer of ambient music See also * Spira (other) Spira may refer to: * Spira (car), a three-wheeled motor vehicle * Spira (confectionery), a Cadbury chocolate bar in a helix shape * Spira (name), including a list of people with the name * Spira (''Final Fantasy''), the fictional world of the ... {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant Pressure System
The Constant Pressure System, or CPS, is a powerful design used for certain water guns. CPS water guns are powered by a rubber bladder inflated with water. It was patented by Bruce M. D'Andrade as "bladder water gun." Design All Constant Pressure water guns have a rubber bladder, which is either shaped like a balloon (spherical) or is a length of latex rubber tubing (cylindrical). Water is pumped from the water gun's reservoir and into the rubber bladder, inflating it. Then the trigger is pulled, which opens a valve, allowing the bladder to push the water out of the nozzle. Due to the nature of the bladder, the stream produced is fairly constant, and has almost the same range and power throughout the entire shot, most streams dropping only one foot in range towards the end of a continuous shot, unlike most air pressure based water guns which exhibit a constant loss of pressure while the trigger is pulled. Some bladder water guns, such as Speedloaders, Water Worms, and Super Charg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super Soaker
Super Soaker is an American brand of recreational water gun that uses manually-pressurized air to shoot water with greater power, range, and accuracy than conventional squirt pistols. The Super Soaker was invented in 1989 by engineer Lonnie Johnson. The prototype combined PVC pipe, acrylic glass, and an empty plastic soda bottle. Originally sold by Larami and now produced by Hasbro under the Nerf brand, Super Soaker has generated more than $1 billion in total sales. The first Super Soaker went on sale in 1990 and was originally called the Power Drencher. Rebranding the name to Super Soaker occurred in 1991 together with a series of TV advertisements that resulted in 2 million water guns being sold. Super Soakers were popular for many years—so popular, in fact, that the term ''super soaker'' is sometimes used generically, to refer to any type of toy pressurized water gun. History In 1982 Air Force and NASA engineer Lonnie Johnson conceived of the idea of a pressurized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
