A dock leveler and installation thereof having a bumper assembly to protect the deck and the lip of the leveler. In one embodiment the dock leveler comprises a pivotable deck and a lip attached to the deck at one end thereof. A bumper is operably connected to the deck and moveable with the deck. The...http://www.google.com.tw/patents/US6883198?utm_source=gb-gplus-share專利 US6883198 - Loading dock with lip protecting bumpers
