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It has been claimed to be the first mainstream brand of blender, [1] though technically the Waring blender brand was introduced in 1937. In 1946, Oster acquired the Stevens Electric Company, which had received a patent on the liquifying blender in 1922. Oster itself was bought by Sunbeam Corporation in 1960.
Some cartridge seals use regular component seal parts whereas other cartridge seals might use specific purpose parts. API 682 specifies that only cartridge seals are acceptable to the standard. The seal components may be conveniently pre-assembled into a cartridge for ease of installation.
Countertop blenders use a 1–2 liters (4–8 cups) blending container made of glass, plastic, stainless steel. [1] Glass blenders are heavier and more stable. [1] Plastic is prone to scratching and absorbing the smell of blended food. [1] Stainless steel is preferred for its appearance, but limits visibility of the food as it is blended. [1]
A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path ...
The rat-race coupler has four ports, each placed one-quarter wavelength away from each other around the top half of the ring. The bottom half of the ring is three-quarter wavelengths in length. The ring has a characteristic impedance of factor 2 {\displaystyle {\sqrt {2}}} compared to port impedance.