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The Boston crab is a professional wrestling hold that typically starts with one wrestler lying in a supine position on the mat, with the other wrestler standing and facing them. It is a type of spinal lock where the wrestler hooks each of the opponent’s legs in one of their arms and then turns the opponent face-down, stepping over them in the ...
Anthony Robles (born July 15, 1988) is an American wrestler who won the 2011 NCAA individual wrestling national championship in the 125-pound weight class, despite being born with only one leg. He is the author of the book Unstoppable: From Underdog to Undefeated: How I Became a Champion (Gotham Books), which was published in September 2012.
Innovated by Chief Little Wolf, the wrestler lifts up a leg of a face-up opponent and wraps one of their legs around the other leg before dropping to a kneeling position, thus locking the opponent's leg behind the wrestler's knee. The wrestler then reaches over and grabs the opponent's far leg and places it on top of the trapped foot of the ...
The coupler curve of a four-bar linkage guides the lower link of an RR serial chain to form a leg mechanism, known as the Klann linkage. U.S. Patent No. 6,481,513, Single Actuator per Leg Robotic Hexapod, M. Buehler et al. (2002). A leg mechanism that consists of a single rotating crank.
This is considered to be a special case of two joints that are located in the same place. Thus, six plus four provides the 10 one degree-of-freedom joints. The Peaucellier linkage is a (4, 4, 0, 0) eight-bar linkage, which means four of the bars have two joints and four bars have three joints. Animation of one leg of Theo Jansen's Strandbeest
It’s midnight in southern Oregon, and my daughter’s little dog needs a last pee before bed, so I flick on the porch light and step out to find a 40-ish man in shorts and a T-shirt almost ...
The stretch reflex (myotatic reflex), or more accurately "muscle stretch reflex", is a muscle contraction in response to stretching a muscle. The function of the reflex is generally thought to be maintaining the muscle at a constant length but the response is often coordinated across multiple muscles and even joints. [ 1 ]
Underwater walking robot, using Klann leg linkages in laser-cut and anodised aluminium. [1] The Klann linkage is a planar mechanism designed to simulate the gait of legged animal and function as a wheel replacement, a leg mechanism. The linkage consists of the frame, a crank, two grounded rockers, and two couplers all connected by pivot joints.