专利名称：Apparatus and Methods for Interconnecting
Tubular Sections
发明人：Frano Luburic,David W. MacDonald申请号：US12679311申请日：20070921
公开号：US20100193981A1公开日：20100805
专利附图：
摘要：Apparatus and methods for multi-piece tubing are disclosed. Optional nestableembodiments ( and ) provide benefits in storage, transportation, and use. Optionalinterlocking elements () provide benefits in ease of assembly and use, and possible
disassembly, including with other tubing or non-tubing elements such as a base (). Endcover elements () can protect tube's interior from undesired dirt, liquid, or othercontaminants, and can be removable. Methods include use in forming concrete pierfootings or other building supports.
申请人：Frano Luburic,David W. MacDonald
地址：Anaheim Hills CA US,Nova Scotia CA
国籍：US,CA
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