专利名称：Transition collar 发明人：Ferdinand M. Svirklys 申请号：US08/352614南瓜灯英语
申请日：19941209
公开号：US05595455A
公开日：简爱好词好句好段
学习策略
19970121
暖和的拼音
专利内容由知识产权出版社提供
摘要：A resilient annular transition collar is provided for roadway structures, including manholes and catch basins, which acts as a flexible transition between the rigid structure or frame of the manhole and the mi-rigid structure of the asphalt paving. The resilient transition collar absorbs any movement of the pavement during expansion and contraction and this absorption avoids the prior art problems of break-up, cracking and paration between manhole and pavement. Rirs or adjusting rings may be employed in conjunction with the transition collar to ensure a flush fit between the pavement surface and the upper surface of the transition collar. A mold structure for forming the collars includes heat transfer studs to provide an incread production rate.禾卑怎么读
申请人：DOMAL ENVIROTECH INC.孟武伯问孝
平面连杆机构
代理机构：Sim & McBurney
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