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A different approach to the walker is the rollator, also called wheeled walker, invented by the Swede Aina Wifalk in 1978. Wifalk had polio . [ 9 ] [ 10 ] Although originally a brand name, "rollator" has become a genericized trademark for wheeled walkers in many countries, and is also the most common type of walker in several European countries.
The 2-gear wheels can be added to a manual wheelchair. The geared wheels provide a user with additional assistance by providing leverage through gearing (like a bicycle, not a motor). The two-gear wheels offer two speed ratios- 1:1 (no help, no extra torque) and 2:1, providing 100% more hill climbing force.
In 1942, Walker-Turner released its first Radial Arm Drill Press, the RD-1170. [1] 900 Series Drill Press, Serial # 1 944. Through 1942-1945, during the years of the United States' involvement in World War II, much of Walker-Turner's production capacity was focused on the war effort. Catalogs and other documentation from this period may be scarce.
The modern walker, Wifalks most noted invention. Wifalk developed two aids for people with physical impairments: the manuped and the walker. She did not patent her inventions because she wanted to make them available to as many disabled people as possible.
, The Walker Company) was a cosmetics manufacturer incorporated in Indianapolis, Indiana in 1910 by Madam C. J. Walker. It was best known for its African-American cosmetics and hair care products. It is considered the most widely known and financially successful African-American-owned business of the early twentieth century. [ 1 ]
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