Elliot Handler daughter, Barbara, who was the namesake of Barbie dolls; and a son, Kenneth (who died of a brain tumor in 1994) who was the namesake of Ken dolls. While a struggling art student and designer of light fixtures, Handler partnered with Harold Matson to design a realistic-looking miniature piano that received roughly 300,000 orders; however, they mispriced the product and lost a dime on each one produced. Mattel received its name from business partners Harold Matt Matson and Elliot Handler in 1945. Elliot's wife, Ruth, took Matson's role when the Handlers bought his share in the late 1940's. Ruth Handler
Air handler The blowers in an air handler can create substantial vibration and the large area of the duct system would transmit this noise and vibration to the occupants of the building. To avoid this, vibration isolators (flexible sections) are normally inserted into the duct immediately before and after the air handler and often also between the fan compartment and the rest of the AHU. The rubberized canvas-like material of these sections allows the air handler components to vibrate without transmitting this motion to the attached ducts. The fan compartment can be further isolated by placing it on a spring suspension, which