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Upper row: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew; Lower row: spring clamp, C-clamp (G-clamp ), wooden cam clamp. A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure.
A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]
It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement. Or it may couple various parts together so that they move in unison – the primary example of this being a flexible drive to mate two shafts in order to transmit torque. Some devices use dog clutches to lock together two spinning components.
Cleco (Cleko) fasteners on an aircraft wing. A cleco, also spelled generically cleko, is a temporary fastener developed by the Cleveland Pneumatic Tool Company. [1] Widely used in the manufacture and repair of aluminum-skinned aircraft, it is used to temporarily fasten sheets of material together, or to hold parts such as stiffeners, frames etc together, before they are permanently joined.
Aerol Oleo-Pneumatic strut. During 1926, the Cleveland Pneumatic Tool Company designed and introduced an oleo strut, one of the first to be purpose-designed for use on airplanes. The company subsequently marketed the product as an Aerol strut, which had entered widespread use within the United States within the space of a decade.
Using the same type of system as a hydraulic launch, a pneumatic launch uses compressed air to launch the vehicle. The technology was developed by S&S as the Thrust Air 2000 model. The first coaster of this type was the Hypersonic XLC, opened at Kings Dominion in Doswell, Virginia, USA in 2001. This coaster closed in 2007.
One example of in vivo patch clamping was shown by Kodandaramaiah, et al. [4] In this case the pressure control consisted of a set of electronic valves and electronic pressure regulators to provide three pressures that were previously provided by a technician (high pressure 800-1000mbar, low pressure 20-30mbar, and a small vacuum 15-150mbar).