摘要 |
<p>A pressure control device for isolating a section of a conduit is described. The device comprises a support member, a flexible cup member mounted to the support member, a first swellable element, the first swellable element adapted, upon activation by an activation fluid, to urge a first portion of the cup member outwards into engagement with a conduit surface and at least one bypass arranged to permit the activation fluid to bypass the swellable element and build up behind a second portion of the cup member.</p> |
申请人 |
RUBBERATKINS LIMITED;ATKINS, NICHOLAS;CLARKE, TIM;SPALDING, CRAIG;HARE, DAVID |
发明人 |
ATKINS, NICHOLAS;CLARKE, TIM;SPALDING, CRAIG;HARE, DAVID |