发明名称 aparelhagem para proteger uma junta de quilha, junta de quilha com um tubo ascendente e método para proteger uma junta de quilha de uma sonda com relação a um casco da sonda
摘要 <p>A keel joint protector, which, in certain aspects, includes a body made of flexible material, a central open bore through the body, and the body having a plurality of spaced-apart energy management zones therein for diffusing a force applied to a particular part of the body. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 CFR 1.72(b).</p>
申请公布号 BRPI0820147(A2) 申请公布日期 2015.05.12
申请号 BR2008PI20147 申请日期 2008.10.27
申请人 NATIONAL OILWELL VARCO, L.P. 发明人 DAVID WILLIAM DARTFORD;TIMOTHY STEVEN WILLIAMS;GEORGE WILLIAM TISDALE
分类号 E21B17/01;E21B19/00;F16L57/00 主分类号 E21B17/01
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