外研社小学英语专利名称：Rock Grasping and Removal Apparatus星期一英文简写
发明人：Daniel Wehrly
申请号：US13245057
申请日：20110926
公开号：US20120207582A1
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公开日：
pucca20120816
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摘要：A manually deployed grasping apparatus may be utilized for retrieving objects,such as rocks, concrete chunks and other debris, from vertical excavations such as potholes, boreholes, drilled shafts, etc. Unlike backhoes and other articulated arm
machinery, the disclod grasping apparatus is manually lowered into the excavation by
dictationthe ur. Once the apparatus is adjacent to the object to be retrieved, the opposite facing jaw members of the apparatus are placed into an open position to receive the object. Once the object has been received by the opposite facing jaw members, the jaw members are clod to capture the object. The jaw members are then manually withdrawn from the vertical excavation to retrieve the object.
申请人：Daniel Wehrly
地址：Bellflower CA US环保发言稿
烟灰国籍：US
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