专利内容由知识产权出版社提供
专利名称：Marker post and manufacturing method发明人：Jason N. Parkhill,Steve Ray Stevens,Glen
Joseph Voth
申请号：US10262290申请日：20020930
公开号：US20040060500A1公开日：20040401
专利附图：
摘要：A marker post includes a tubular barrel with upper and lower ends and a boreextending therebetween. An annular flange assembly is formed at the barrel lower endand includes a concave extension portion extending radially outwardly from the barrel
and a return portion extending upwardly and inwardly from the extension portion. Theflange assembly resists pullout of the marker post when embedded in the ground. Amethod of manufacturing the marker post includes steps of preheating the tubularbarrel adjacent to its lower end to soften same, and deforming the tubular barrel lowerend to form the flange assembly thereof. An apparatus for manufacturing the markerpost includes a warming tank for immersing the barrel lower ends in heated liquid forsoftening same. A barrel holder receives the pre-softened tubular barrels and includes amandrel assembly reciprocated into and out of engagement with the barrel lower ends.The mandrel assembly reshapes the barrel lower ends into the flange assemblies.
申请人：PARKHILL JASON N.,STEVENS STEVE RAY,VOTH GLEN JOSEPH
更多信息请下载全文后查看
