E.i. Dupont De Nemours and Company

Dupont Polymers, Inc.

Michel C Renaud

Jean-Michel Philippoz

Philippe Leboeuf

Bryan Martin Morris

Alain Kim

Vincent Descombes

Serge Cavalli

Provided herein is a fluid ductcomprising a tubular base wallsurrounding a duct channel and at least one bellowsformed along a section of the tubular base wallThe bellowscomprises a plurality of convoluteshaving a profileprojecting radially from the base wallAt least one convolutewraps around the duct channel at a wrap-around angle &#x3a9; of between 180&#xb0; and 720&#xb0; from a first endto a second endof the convolutesaid second endbeing offset in a flow direction F parallel to a centerline C of the duct channel by a non-zero offset distance D from the first end 22

Fluid duct

Provided herein is a fluid ductcomprising a tubular base wallsurrounding a duct channel and at least one bellowsformed along a section of the tubular base wall. The bellowscomprises a plurality of convoluteshaving a profileprojecting radially from the base wall. At least one convolutewraps around the duct channel at a wrap-around angle &#x3a9; of between 180&#xb0; and 720&#xb0; from a first endto a second endof the convolute, said second endbeing offset in a flow direction F parallel to a centerline C of the duct channel by a non-zero offset distance D from the first end

Provided herein is a fluid duct () comprising a fluid duct connection end portion () for coupling to a component connection end portion () via a sealing ring (), the fluid duct connection end portion comprising a clamping ring seat () configured for receiving an adjustable clamping ring therearound, the clamping ring seat () extending axially (A) between an entry flange () and a tube joining section (), the tube joining section () extending into a fluid duct tube portion (). The clamping ring seat () comprises an extension fold () configured to allow the clamping ring seat () to expand radially due to a widening of the expansion fold ().

A clip () of molded plastics material for fitting on a pipe or duct in particular a blow-molded automotive fluid duct, comprises an open ring of generally C-shape having facing arms () that are curved and with open ends that can be sprung apart and together again to resiliently fit the clip on the pipe or duct. The facing arms () have profiled inner surfaces that engage with complementary profiles carried by the pipe or duct, namely the facing arms () have a substantially T-shaped profile (), that fits between pairs of complementary spaced-apart arcuate ribs and recess carried by the pipe or duct. The clip () is easy to fit and remove while providing firm holding power and good pull-out strength.

Clip for a pipe or duct

The invention relates to a new polymer blend comprising: The polymer blend of the invention is particularly suitable for blow-moulding, to make parts for high-temperature, high-oil-exposure uses.

Thermoplastic vulcanisate blend

Flexible tube having a variable stiffness bellows

This invention relates to a flexible tube that includes a bellows having a plurality of convolutes formed in the wall of said tube and extending above the top surface of the tube, said convolutes being spaced from one another in the axial direction of the tube, wherein at least one of said convolutes comprises two opposing bending sections and two restrained elongation sections positioned between the bending sections, and wherein the height of the bending sections above the top surface of the tube is greater that the height of the restrained elongation sections above the top surface of the tube.

Variable stiffness bellows

A dispenser for storing and dispensing small items is provided. The dispenser includes a base container having an a hollow space for storing items to be dispensed, a cover sized to fit over the opening of the base container, and a wheel rotationally mounted under the cover which has a shaft and at least three fins radially extending from the shaft and spaced from each other around the shaft. The wheel is mounted under the cover such that the fins of the wheel can rotate under the cover and carry an item stored within the base container to a port in the cover. The rotating fins on the wheel are aligned so as to contact and pass over the raised boss on an inside surface of the cover each time the wheel is rotated 360 degrees. An actuator is also provided for manually rotating the wheel under the cover, which actuator is accessible from outside of the dispenser. Both the cover and the fins of the wheel are made of plastic.

Tablet dispenser

A bellows is disclosed which includes a tube having plurality of raised circumferential convolutes formed in the surface of the tube, wherein at least one of the convolutes being formed so that a portion of the convolute is substantially even with the surface of the tube.

Growing community of inventors

Prangins, Switzerland

Michel C Renaud