USRE40577E1 - Flexible tube having a variable stiffness bellows - Google Patents

Flexible tube having a variable stiffness bellows Download PDF

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Publication number
USRE40577E1
USRE40577E1 US29/231,513 US23151305D USRE40577E US RE40577 E1 USRE40577 E1 US RE40577E1 US 23151305 D US23151305 D US 23151305D US RE40577 E USRE40577 E US RE40577E
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United States
Prior art keywords
flexible tube
variable stiffness
stiffness bellows
bellows
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US29/231,513
Inventor
Michel C. Renaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US29/125,826 external-priority patent/USD447792S1/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US29/231,513 priority Critical patent/USRE40577E1/en
Application granted granted Critical
Publication of USRE40577E1 publication Critical patent/USRE40577E1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/111—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall with homogeneous wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections

Definitions

  • FIG. 1 is a perspective view of a flexible tube having a stiffness bellows showing my new design
  • FIG. 2 is a front view thereof
  • FIG. 3 is a side elevational view thereof.
  • FIG. 4 is a sectional view taken along line 4—4 in FIG. 3.
  • FIG. 1 where there is shown a flexible tube that includes a bellows having a plurality of convolutes formed therein spaced at an interval from each other in the axial direction of flexible tube.
  • the convolutes are raised circumferential ridges formed in the surface of the tube as an integral part thereof, have bending sections that are approximately the same height above the outer surface of the tube and restrained elongation sections that are approximately the same height above the outer surface of the tube with the bending sections having a height above the outer surface of the tube greater than the height of the restrained elongation sections above the outer surface of tube.
  • FIG. 2 there is shown another embodiment of the invention which is similar to that shown in FIG. 1, except that the shape of the convolutes has been modified such that near the surface of the tube the convolutes are narrower in the area of the higher restrained elongation sections of the convolutes than in the area of the lower bending sections of the convolutes, with the width of the convolutes being tapered moving from the bending sections to the restrained elongation sections.
  • FIG. 3 Another embodiment of the invention is shown in FIG. 3, where there is shown a flexible tube as in FIG. 1, where the restrained elongation sections include two radially-spaced ridges which are attached at both ends to the bending sections of the convolutes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Diaphragms And Bellows (AREA)

Description

FIG. 1 is a perspective view of a flexible tube having a stiffness bellows showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a side elevational view thereof; and,
FIG. 4 is a sectional view taken along line 4—4 in FIG. 3.
The invention is illustrated in FIG. 1 where there is shown a flexible tube that includes a bellows having a plurality of convolutes formed therein spaced at an interval from each other in the axial direction of flexible tube. The convolutes are raised circumferential ridges formed in the surface of the tube as an integral part thereof, have bending sections that are approximately the same height above the outer surface of the tube and restrained elongation sections that are approximately the same height above the outer surface of the tube with the bending sections having a height above the outer surface of the tube greater than the height of the restrained elongation sections above the outer surface of tube.
In FIG. 2, there is shown another embodiment of the invention which is similar to that shown in FIG. 1, except that the shape of the convolutes has been modified such that near the surface of the tube the convolutes are narrower in the area of the higher restrained elongation sections of the convolutes than in the area of the lower bending sections of the convolutes, with the width of the convolutes being tapered moving from the bending sections to the restrained elongation sections.
Another embodiment of the invention is shown in FIG. 3, where there is shown a flexible tube as in FIG. 1, where the restrained elongation sections include two radially-spaced ridges which are attached at both ends to the bending sections of the convolutes.

Claims (1)

    CLAIM
  1. The ornamental design for a flexible tube having a variable stiffness bellows, as shown and described.
US29/231,513 2000-06-30 2005-04-14 Flexible tube having a variable stiffness bellows Expired - Lifetime USRE40577E1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US29/231,513 USRE40577E1 (en) 2000-06-30 2005-04-14 Flexible tube having a variable stiffness bellows

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US29/125,826 USD447792S1 (en) 2000-06-30 2000-06-30 Flexible tube having a variable stiffness bellows
US29/142,253 USD460536S1 (en) 2000-06-30 2001-05-22 Flexible tube having a variable stiffness bellows
US29/162,123 USD484953S1 (en) 2000-06-30 2002-06-10 Flexible tube having a variable stiffness bellows
US29/231,513 USRE40577E1 (en) 2000-06-30 2005-04-14 Flexible tube having a variable stiffness bellows

Publications (1)

Publication Number Publication Date
USRE40577E1 true USRE40577E1 (en) 2008-11-25

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US29/162,123 Ceased USD484953S1 (en) 2000-06-30 2002-06-10 Flexible tube having a variable stiffness bellows
US29/231,513 Expired - Lifetime USRE40577E1 (en) 2000-06-30 2005-04-14 Flexible tube having a variable stiffness bellows

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US29/162,123 Ceased USD484953S1 (en) 2000-06-30 2002-06-10 Flexible tube having a variable stiffness bellows

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US (2) USD484953S1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD733268S1 (en) * 2013-06-13 2015-06-30 Bdd Beteiligungs Gmbh Pipe insulator
USD739510S1 (en) * 2013-03-04 2015-09-22 Carl Jason Bullock Grease containment bucket
USD823444S1 (en) * 2016-12-22 2018-07-17 Sankei Giken Co., Ltd. Flexible pipe joint
USD994091S1 (en) * 2016-08-05 2023-08-01 Rls Llc Crimp fitting for joining tubing
USD1009227S1 (en) 2016-08-05 2023-12-26 Rls Llc Crimp fitting for joining tubing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD893678S1 (en) 2018-02-05 2020-08-18 Blacoh Fluid Controls, Inc. Valve
US11346374B2 (en) 2020-09-08 2022-05-31 Blacoh Fluid Controls, Inc. Fluid pulsation dampeners
USD955559S1 (en) * 2021-04-08 2022-06-21 Nike, Inc. Face mask
USD956208S1 (en) * 2021-04-08 2022-06-28 Nike, Inc. Face mask
USD956209S1 (en) * 2021-04-08 2022-06-28 Nike, Inc. Face mask
US11549523B2 (en) 2021-04-27 2023-01-10 Blacoh Fluid Controls, Inc. Automatic fluid pump inlet stabilizers and vacuum regulators

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547431A (en) 1920-08-31 1925-07-28 American Radiator Co Expansible-collapsible element
US3050087A (en) * 1957-03-22 1962-08-21 Porter Co Inc H K Flexible hose
US3842865A (en) 1972-07-22 1974-10-22 Italiana Tubi Metall Expansion compensator for large angular movements
US5050087A (en) 1989-11-29 1991-09-17 Westinghouse Electric Corp. System and method for providing accurate attitude measurements at remote locations within an aircraft
US6056018A (en) 1997-10-29 2000-05-02 E.I. Du Pont De Nemours And Company Variable stiffness bellows
USD447792S1 (en) 2000-06-30 2001-09-11 E. I. Du Pont De Nemours And Company Flexible tube having a variable stiffness bellows

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547431A (en) 1920-08-31 1925-07-28 American Radiator Co Expansible-collapsible element
US3050087A (en) * 1957-03-22 1962-08-21 Porter Co Inc H K Flexible hose
US3842865A (en) 1972-07-22 1974-10-22 Italiana Tubi Metall Expansion compensator for large angular movements
US5050087A (en) 1989-11-29 1991-09-17 Westinghouse Electric Corp. System and method for providing accurate attitude measurements at remote locations within an aircraft
US6056018A (en) 1997-10-29 2000-05-02 E.I. Du Pont De Nemours And Company Variable stiffness bellows
USD447792S1 (en) 2000-06-30 2001-09-11 E. I. Du Pont De Nemours And Company Flexible tube having a variable stiffness bellows

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD739510S1 (en) * 2013-03-04 2015-09-22 Carl Jason Bullock Grease containment bucket
USD733268S1 (en) * 2013-06-13 2015-06-30 Bdd Beteiligungs Gmbh Pipe insulator
USD994091S1 (en) * 2016-08-05 2023-08-01 Rls Llc Crimp fitting for joining tubing
USD1009227S1 (en) 2016-08-05 2023-12-26 Rls Llc Crimp fitting for joining tubing
USD823444S1 (en) * 2016-12-22 2018-07-17 Sankei Giken Co., Ltd. Flexible pipe joint

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Publication number Publication date
USD484953S1 (en) 2004-01-06

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