Stress-bearing umbilicus for a compact centrifuge
First Claim
1. An umbilicus for conveying fluid between a stationary body and a rotating body, the umbilicus comprisingan umbilicus body made from an extruded first polyester elastomer material having flexibility, anda support block made from a second polyester elastomer material over-molded about a region of the umbilicus body, the second polyester elastomer material having flexibility that is greater than the flexibility of the first polyester elastomeric material, the region between the support block and the umbilicus body having a surface energy that has been increased before over-molding to prevent delamination and peeling.
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Accused Products
Abstract
A stress-bearing umbilicus for conveying fluid between a stationary body and a rotating body comprises an umbilicus body made from an extruded first polyester elastomer material having flexibility. A support block, made from a second polyester elastomer material, is over-molded about at least one region of the umbilicus body. The second polyester elastomer material has flexibility that is greater than the flexibility of the first polyester elastomer material. Surface energy of the region between the support block and the umbilicus body is increased before over-molding to prevent delamination and peeling.
142 Citations
10 Claims
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1. An umbilicus for conveying fluid between a stationary body and a rotating body, the umbilicus comprising
an umbilicus body made from an extruded first polyester elastomer material having flexibility, and a support block made from a second polyester elastomer material over-molded about a region of the umbilicus body, the second polyester elastomer material having flexibility that is greater than the flexibility of the first polyester elastomeric material, the region between the support block and the umbilicus body having a surface energy that has been increased before over-molding to prevent delamination and peeling.
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7. A method for fabricating an umbilicus for conveying fluid between a stationary body and a rotating body comprising the steps of
forming an umbilicus body by extruding a first polyester elastomer material having flexibility, the umbilicus body havina a surface energy, increasing the surface energy of a portion of the umbilicus body, and over-molding a member about the portion of the umbilicus body having the increased surface energy, the member comprising a second polyester elastomer material having flexibility that is greater than the flexibility of the first polyester elastomer material.
Specification