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Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English) and "Allen key" (British English) [ 3] are derived from the Allen brand name and refer to the generic product category "hex keys". W.G. Allen [ 4] filed the first related patent in ...
Friction disk shock absorbers or André Hartford dampers were an early form of shock absorber or damper used for car suspension. They were commonly used in the 1930s but were considered obsolete post-war. [1] Compared to modern shock absorbers friction dampers only provided limited shock absorption but served mainly to damp down oscillation.
Revenue. $8 billion (2024) [ 3] Number of employees. 26,000. Website. www .harborfreight .com. Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business.
A Stockbridge damper is a tuned mass damper used to suppress wind-induced vibrations on slender structures such as overhead power lines, [1] long cantilevered signs [2] and cable-stayed bridges. The dumbbell -shaped device consists of two masses at the ends of a short length of cable or flexible rod, which is clamped at its middle to the main ...
Harmonic balancer lower pulley on a four-cylinder engine. A harmonic damper is a device fitted to the free (accessory drive) end of the crankshaft of an internal combustion engine to counter torsional and resonance vibrations from the crankshaft. This device must be an interference fit to the crankshaft in order to operate in an effective manner.
Shock absorbers are an important part of car suspension designed to increase comfort, stability and overall safety. The shock absorber, produced with precision and engineering skills, has many important features. The most common type is a hydraulic shock absorber, which usually includes a piston, a cylinder, and an oil-filled chamber.
Magnetorheological damper. A magnetorheological damper or magnetorheological shock absorber is a damper filled with magnetorheological fluid, which is controlled by a magnetic field, usually using an electromagnet. [ 1][ 2][ 3] This allows the damping characteristics of the shock absorber to be continuously controlled by varying the power of ...
June 21, 2024 at 8:14 PM. STRATFORD, Conn. (AP) — Two Lockheed Martin subsidiaries have agreed to pay the federal government $70 million for overcharging the Navy for aircraft parts, the U.S ...