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Top Cover with dimple rib Disclosure Number: IPCOM000013321D
Original Publication Date: 2001-Dec-29
Included in the Prior Art Database: 2003-Jun-18

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By contacting a CrashStop to a TopCover, vibration of actuator could be suppressed and operating noise was able to be lowered. The vibration(2kHz~4kHz) from actuator is cited as one factor as a cause that operating noise is large.(Refer to Fig.1 the vibration of a 2kHz Top Cover)