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In 1936 the vibratory compactor was developed by a mechanical engineer Hilding Svenson. In 1940 the company name changed to AB Vibro-Verken. In 1947 it launched the first vibratory plate compactor, which weighed 1.5 tonnes, being nicknamed the frog. It opened its research laboratory in 1948 and manufactured the first vibratory road roller in 1953.
Caterpillar soil compactor equipped with padfoot drum, being used to compact the ground before placing concrete Antique "Kemna" steamroller. A road roller (sometimes called a roller-compactor, or just roller [1]) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. [1]
A steamroller (or steam roller) is a form of road roller – a type of heavy construction machinery used for leveling surfaces, such as roads or airfields – that is powered by a steam engine. The leveling/flattening action is achieved through a combination of the size and weight of the vehicle and the rolls : the smooth wheels and the large ...
A foam roller is a lightweight, cylindrical tube of elastomeric foam used for massaging one's own muscles. [1] The roller is placed between the target muscle and the ground, and is rolled back and forth, using body weight for pressure.
Bowl feeders, vibratory feeders and vibrating hoppers are used extensively in the food, pharmaceutical, and chemical industries to move and position bulk material or small component parts. The application of vibration working with the force of gravity can often move materials through a process more effectively than other methods.
Baby wearing in a sling was well known in Europe in medieval times, but was mainly seen as a practice of marginalised groups such as beggars and Romani people. [4] A cradleboard is a Native American baby carrier used to keep babies secure and comfortable and at the same time allowing the mothers freedom to work and travel. [5]
Bead maze. A bead maze or bead roller coaster is a children's toy.Bead mazes feature a wooden base with brightly-colored rigid wires strung from one side of the base to the other, often in intricate tracks that loop and intertwine with one another.
The effects of sustained vibratory stimulation on muscle contraction, posture and kinesthetic perceptions are much more complex than merely contraction of the muscle being vibrated. Russian scientists Victor Gurfinkel, Mikhail Lebedev, Andrew Polyakov and Yuri Levick used vibratory stimulation to study human posture control and spectral ...