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US 5,305,800 AGranted
Flexible hose of tube
AssigneeITW-ATECO GmbH
InventorLothar Kolberg
Life of this patent
Estimating the term…
Abstract
Flexible hose or tube comprises a hose body and a plurality of ribs extending radially outwardly from the outer periphery of the hose body. The ribs are of annular shape and are axially spaced with respect to each other. The hose body wall is of relatively small thickness as compared to the thickness of the ribs. The hose may be integrally made from a thermoplastic caoutschuc or rubber and exhibits a high degree of flexibility due to its relative softness, while the shape and structure of the ribs provide a high degree of resistance against lateral bending or buckling of the tube.
Claims21
A flexible hose, comprising:
- a hose body fabricated from a plastic material and comprising a fluid conduit through which a fluid can be conducted and defining an interior fluid passageway extending along a longitudinal axis and defined by an interior peripheral wall surface of said hose body having a predetermined radial extend;
- and
- a plurality of axially spaced, radially extending, annular ribs disposed around outer peripheral surface portions of said hose body;
- each one of said plurality of ribs having a predetermined radial extend h extending radially outwardly from each one of said outer peripheral surface portions of said hose body, a predetermined axial thickness t, and a predetermined axial spacing a defined between successive ones of said plurality of axially spaced ribs;
- wherein the ratio of said radial extent h of each one of said plurality of ribs with respect to said axial thickness t of each one of said plurality of ribs is approximately 10:1, and the ratio of said radial extent h of each one of said plurality of ribs with respect to said axial spacing a defined between successive ones of said plurality of axially spaced ribs is approximately 1.5:1 such that said hose body can be bent through a predetermined angle at which radially outermost portions of said plurality of axially spaced ribs engage each other so as to limit the angular bending of said hose body as a result of which said fluid is able to be conducted through said fluid conduit with excellent flow characteristics.
2 more elements
A flexible hose, comprising:
- a hose body fabricated from a plastic material and comprising a fluid conduit through which a fluid can be conducted and defining an interior fluid passageway extending along a longitudinal axis and defined by an interior peripheral wall surface of said hose body having a predetermined radial extent, said hose body having a predetermined wall thickness t.sub.1 ;
- and
- a plurality of axially spaced, radially extending, annular ribs disposed around outer peripheral surface portions of said hose body;
- each one of said plurality of axially spaced ribs having a predetermined radial extent h extending radially outwardly from each one of said outer peripheral surface portions of said hose body, a predetermined axial thickness t.sub.2, and a predetermined axial spacing a defined between successive ones of said plurality of axially spaced ribs;
- wherein the ratio of said hose body wall thickness t.sub.1 with respect to the internal diameter d of said hose body fluid conduit, the ratio of said radial extent h of each one of said plurality of axially spaced ribs with respect to said axial thickness t.sub.2 of each one of said plurality of axially spaced ribs, and the ratio of said radial extend h of each one of said plurality of axially spaced ribs with respect to said axial spacing a defined between successive ones of said plurality of axially spaced ribs is such that when said hose body is bent through a predetermined angle at which radially outermost portions of said plurality of axially spaced ribs engage each other so as to limit the angular bending of said hose body, axially extending portions of said hose body, defined between said outer peripheral surface portions of said hose body upon which said axially spaced ribs are disposed, are deformed radially outwardly such that said fluid is able to be conducted through said fluid conduit with excellent flow characteristics.
2 more elements
Dependencies are inferred from the claim text.