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The Schrader valve consists of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring. A small rubber seal located on the core keeps the fluid from escaping through the threads. Using the appropriate tools, a faulty valve core can be immediately extracted from the valve stem and replaced with a ...
Around 1890, after reports of English cyclists' success using pneumatic tires, August Schrader saw the need for a bicycle tire valve. By 1891 he had produced the Schrader valve, which was his most popular invention and is used today. August's son, George, is generally credited with the experimental work that resulted in the valve's creation.
NAPA also sponsors Ron Capps in the NHRA Mello Yello Drag Racing Series; they have remained a sponsor since 2007. [8] The company has previously sponsored Michael Waltrip from 2001 to 2009 and Martin Truex Jr. from 2010 until 2013 when Truex and the Michael Waltrip Racing team were implicated in a race manipulation scandal at the 2013 Federated ...
A Presta valve has a nut holding the valve closed, but this is not an advantage in practice, as ordinary bicycles never go fast enough to open a Schrader valve. Further, at least some motor-paced speed record bicycles have used Schrader valves. (The actual speed of Schrader opening depends on many factors; 150 kph is only a very rough guide.
The word poppet shares etymology with "puppet": it is from the Middle English popet ("youth" or "doll"), from Middle French poupette, which is a diminutive of poupée.The use of the word poppet to describe a valve comes from the same word applied to marionettes, which, like the poppet valve, move bodily in response to remote motion transmitted linearly.
A modified Schrader valve - with a floater - is used in self-acting vents on the very top of pipes. Via Schrader valves cooling medium is filled into the air conditioning of cars, small powder fire extinguishers are filled with nitrogen or pressure-checked. --Helium4 08:47, 8 August 2010 (UTC)
A valvulotome is a catheter-based controllable surgical instrument used for cutting or disabling the venous valves. [1] This is needed to enable an in situ bypass in patients with an occluded artery (especially femoral artery), where the saphenous vein is disconnected from the venous system and connected to arteries above and below the occluded segment to allow blood to flow to the lower leg.
The 1991 Daytona 500 By STP was the first stock car race of the 1991 NASCAR Winston Cup Series season and the 33rd iteration of the event.The race was held on Sunday, February 17, 1991, before an audience of 145,000 in Daytona Beach, Florida at Daytona International Speedway, a 2.5 miles (4.0 km) permanent triangular-shaped superspeedway.
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