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Patent · US10704722B2 · B2 · US

Single action push to connect conduit fitting

(11) Publication number
US10704722B2
(21) Application number
16/437,095
(22) Filing date
2019-06-11
(30) Priority date
2015-04-23
(43) Publication date
2020-07-07
(45) Date of grant
2020-07-07
(51) IPC
F16L 37/092; F16L 37/23
(52) CPC
  • F16L Pipes; joints or fittings for pipes; supports for pipes, cables or protective tubing; means for thermal insulation in general: 37/0927, 37/092, 37/23
(73) Assignee
Swagellok Co
(72) Inventors
Peter C. Williams; Cal R. Brown; James E. Gotch; Connor M. Dorony; Stephen J. Zaborszki; Douglas J. McClure; Douglas S. Welch; Gregory S. Kalata; Ronald P. Campbell
(54) Title
Single action push to connect conduit fitting
(57) Abstract

A push to connect fitting assembly includes first and second fitting components joined to define an interior cavity, a seal device, a retainer, and a biasing member. The seal device is disposed in the interior cavity, and forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component. The retainer is assembled with at least one of the first and second fitting components, and includes a gripping portion that grips the inserted conduit end. The biasing member is axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.

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Claims (19)

  1. A push to connect fitting assembly for a conduit having a longitudinal axis, the fitting assembly comprising: a first fitting component having an outboard end that is adapted to receive a conduit end; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component; a retainer assembled with at least one of the first and second fitting components, the retainer including a gripping portion that grips the inserted conduit end; and a biasing member axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end, wherein the biasing member applies a second axial load to the seal device to produce a radial seal load between the seal device and the one of the first and second fitting components and the inserted conduit end.
  2. The fitting assembly of claim 1, wherein the retainer further comprises an annular retainer body and a colleting portion outboard of the gripping portion, wherein the gripping portion engages the inserted conduit end over a first surface contact area to grip the conduit end, and the colleting portion engages the inserted conduit end over a second surface contact area greater than the first surface contact area to collet the inserted conduit end.
  3. The fitting assembly of claim 1, wherein the first fitting component comprises a female threaded body and the second fitting component comprises a male threaded nut.
  4. The fitting assembly of claim 1, wherein the gripping portion grips the inserted conduit end upon insertion of the conduit end into the outboard end of the first fitting component.
  5. A push to connect fitting assembly for a conduit having a longitudinal axis, the fitting assembly comprising: a first fitting component having an outboard end that is adapted to receive a conduit end; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component; and a retainer assembled with at least one of the first and second fitting components, the retainer including a retainer body, a gripping portion that engages the inserted conduit end over a first surface contact area to grip the conduit end, and a colleting portion outboard of the gripping portion, wherein the colleting portion engages the inserted conduit end over a second surface contact area greater than the first surface contact area to collet the inserted conduit end; wherein the gripping portion comprises a plurality of bearing members captured between the retainer body and a tapered surface of the fitting assembly, and the colleting portion comprises a plurality of axially extending, radially flexible members integral with the retainer body.
  6. The fitting assembly of claim 5, wherein at least one of the gripping portion and the colleting portion comprises at least one bearing member captured between the retainer body and the second fitting component.
  7. The fitting assembly of claim 5, wherein at least one of the gripping portion and the colleting portion comprises at least one axially extending, radially flexible member.
  8. The fitting assembly of claim 7, wherein the at least one flexible member is integral with the retainer body.
  9. The fitting assembly of claim 5, wherein the retainer body comprises a plurality of arcuate segments assembled to form an annular cross-section.
  10. The fitting assembly of claim 9, wherein the gripping portion comprises a plurality of bearing members and the colleting portion comprises a plurality of axially extending, radially flexible members, wherein each of the plurality of arcuate segments defines at least one cavity receiving one of the plurality of bearing members, and each of the plurality of arcuate segments forms at least one of the plurality of flexible members.
  11. The fitting assembly of claim 5, wherein the gripping portion comprises a plurality of bearing members retained in a corresponding plurality of cavities in the retainer body.
  12. The fitting assembly of claim 5, wherein the retainer further includes a second colleting portion inboard of the gripping portion.
  13. The fitting assembly of claim 5, wherein the second fitting component comprises a tapered interior surface that engages at least one of the gripping portion and the colleting portion to move the at least one of the gripping portion and the colleting portion radially inward toward engagement with the outer surface of the inserted conduit end.
  14. The fitting assembly of claim 5, wherein the colleting portion defines a curved inner surface conforming to a cylindrical outer surface of the inserted conduit end.
  15. The fitting assembly of claim 5, wherein the colleting portion is separated from the outer surface of the inserted conduit end by a radial gap when no external outward axial load is applied to the inserted conduit end.
  16. The fitting assembly of claim 5, wherein the gripping portion is biased against a first portion of a tapered interior surface of the fitting assembly to grip the inserted conduit end, and the colleting portion is biased against a second portion of the tapered interior surface of the fitting assembly to collet the inserted conduit end.
  17. The fitting assembly of claim 5, wherein the first fitting component comprises a female threaded body and the second fitting component comprises a male threaded nut.
  18. The fitting assembly of claim 5, further comprising a biasing member that applies a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.
  19. A push to connect fitting assembly comprising: a conduit having a longitudinal axial and a circumferential groove disposed at an end portion of the conduit; a first fitting component having an outboard end that is adapted to receive the conduit end portion; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of the conduit end when the conduit end is inserted into the outboard end of the first fitting component; a retainer assembled with at least one of the first and second fitting components, the retainer including a gripping portion that engages the circumferential groove to grip the inserted conduit end; and a biasing member axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.

Description

The inventions relate generally to fittings for conduits such as tube and pipe. More particularly, the inventions relate to fittings that provide single action push to connect operation.

According to an exemplary aspect of the present application, a push to connect fitting assembly includes first and second fitting components joined to define an interior cavity, a seal device, a retainer, and a biasing member. The seal device is disposed in the interior cavity, and forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component. The retainer is assembled with at least one of the first and second fitting components, and includes a gripping portion that grips the inserted conduit end. The biasing member is axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.

In another exemplary embodiment, a push to connect fitting includes a first fitting component having an outboard end that is adapted to receive a conduit end, a second fitting component joined to the first fitting component to define an interior cavity, a seal device disposed in the interior cavity, and a retainer assembled with at least one of the first and second fitting components. The seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component.

Citations (208)

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Record as JSON 
{
  "publication_number": "US10704722B2",
  "country": "US",
  "kind": "B2",
  "title": "Single action push to connect conduit fitting",
  "abstract": "A push to connect fitting assembly includes first and second fitting components joined to define an interior cavity, a seal device, a retainer, and a biasing member. The seal device is disposed in the interior cavity, and forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component. The retainer is assembled with at least one of the first and second fitting components, and includes a gripping portion that grips the inserted conduit end. The biasing member is axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.",
  "claims": [
    "1. A push to connect fitting assembly for a conduit having a longitudinal axis, the fitting assembly comprising: a first fitting component having an outboard end that is adapted to receive a conduit end; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component; a retainer assembled with at least one of the first and second fitting components, the retainer including a gripping portion that grips the inserted conduit end; and a biasing member axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end, wherein the biasing member applies a second axial load to the seal device to produce a radial seal load between the seal device and the one of the first and second fitting components and the inserted conduit end.",
    "2. The fitting assembly of claim 1, wherein the retainer further comprises an annular retainer body and a colleting portion outboard of the gripping portion, wherein the gripping portion engages the inserted conduit end over a first surface contact area to grip the conduit end, and the colleting portion engages the inserted conduit end over a second surface contact area greater than the first surface contact area to collet the inserted conduit end.",
    "3. The fitting assembly of claim 1, wherein the first fitting component comprises a female threaded body and the second fitting component comprises a male threaded nut.",
    "4. The fitting assembly of claim 1, wherein the gripping portion grips the inserted conduit end upon insertion of the conduit end into the outboard end of the first fitting component.",
    "5. A push to connect fitting assembly for a conduit having a longitudinal axis, the fitting assembly comprising: a first fitting component having an outboard end that is adapted to receive a conduit end; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component; and a retainer assembled with at least one of the first and second fitting components, the retainer including a retainer body, a gripping portion that engages the inserted conduit end over a first surface contact area to grip the conduit end, and a colleting portion outboard of the gripping portion, wherein the colleting portion engages the inserted conduit end over a second surface contact area greater than the first surface contact area to collet the inserted conduit end; wherein the gripping portion comprises a plurality of bearing members captured between the retainer body and a tapered surface of the fitting assembly, and the colleting portion comprises a plurality of axially extending, radially flexible members integral with the retainer body.",
    "6. The fitting assembly of claim 5, wherein at least one of the gripping portion and the colleting portion comprises at least one bearing member captured between the retainer body and the second fitting component.",
    "7. The fitting assembly of claim 5, wherein at least one of the gripping portion and the colleting portion comprises at least one axially extending, radially flexible member.",
    "8. The fitting assembly of claim 7, wherein the at least one flexible member is integral with the retainer body.",
    "9. The fitting assembly of claim 5, wherein the retainer body comprises a plurality of arcuate segments assembled to form an annular cross-section.",
    "10. The fitting assembly of claim 9, wherein the gripping portion comprises a plurality of bearing members and the colleting portion comprises a plurality of axially extending, radially flexible members, wherein each of the plurality of arcuate segments defines at least one cavity receiving one of the plurality of bearing members, and each of the plurality of arcuate segments forms at least one of the plurality of flexible members.",
    "11. The fitting assembly of claim 5, wherein the gripping portion comprises a plurality of bearing members retained in a corresponding plurality of cavities in the retainer body.",
    "12. The fitting assembly of claim 5, wherein the retainer further includes a second colleting portion inboard of the gripping portion.",
    "13. The fitting assembly of claim 5, wherein the second fitting component comprises a tapered interior surface that engages at least one of the gripping portion and the colleting portion to move the at least one of the gripping portion and the colleting portion radially inward toward engagement with the outer surface of the inserted conduit end.",
    "14. The fitting assembly of claim 5, wherein the colleting portion defines a curved inner surface conforming to a cylindrical outer surface of the inserted conduit end.",
    "15. The fitting assembly of claim 5, wherein the colleting portion is separated from the outer surface of the inserted conduit end by a radial gap when no external outward axial load is applied to the inserted conduit end.",
    "16. The fitting assembly of claim 5, wherein the gripping portion is biased against a first portion of a tapered interior surface of the fitting assembly to grip the inserted conduit end, and the colleting portion is biased against a second portion of the tapered interior surface of the fitting assembly to collet the inserted conduit end.",
    "17. The fitting assembly of claim 5, wherein the first fitting component comprises a female threaded body and the second fitting component comprises a male threaded nut.",
    "18. The fitting assembly of claim 5, further comprising a biasing member that applies a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.",
    "19. A push to connect fitting assembly comprising: a conduit having a longitudinal axial and a circumferential groove disposed at an end portion of the conduit; a first fitting component having an outboard end that is adapted to receive the conduit end portion; a second fitting component joined to the first fitting component to define an interior cavity; a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of the conduit end when the conduit end is inserted into the outboard end of the first fitting component; a retainer assembled with at least one of the first and second fitting components, the retainer including a gripping portion that engages the circumferential groove to grip the inserted conduit end; and a biasing member axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end."
  ],
  "description_excerpt": "The inventions relate generally to fittings for conduits such as tube and pipe. More particularly, the inventions relate to fittings that provide single action push to connect operation.\n\nAccording to an exemplary aspect of the present application, a push to connect fitting assembly includes first and second fitting components joined to define an interior cavity, a seal device, a retainer, and a biasing member. The seal device is disposed in the interior cavity, and forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component. The retainer is assembled with at least one of the first and second fitting components, and includes a gripping portion that grips the inserted conduit end. The biasing member is axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.\n\nIn another exemplary embodiment, a push to connect fitting includes a first fitting component having an outboard end that is adapted to receive a conduit end, a second fitting component joined to the first fitting component to define an interior cavity, a seal device disposed in the interior cavity, and a retainer assembled with at least one of the first and second fitting components. The seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component.",
  "cpc": [
    "F16L 37/0927",
    "F16L 37/092",
    "F16L 37/23"
  ],
  "ipc": [
    "F16L 37/092",
    "F16L 37/23"
  ],
  "assignees": [
    "Swagellok Co"
  ],
  "inventors": [
    "Peter C. Williams",
    "Cal R. Brown",
    "James E. Gotch",
    "Connor M. Dorony",
    "Stephen J. Zaborszki",
    "Douglas J. McClure",
    "Douglas S. Welch",
    "Gregory S. Kalata",
    "Ronald P. Campbell"
  ],
  "filing_date": "2019-06-11",
  "publication_date": "2020-07-07",
  "grant_date": "2020-07-07",
  "priority_date": "2015-04-23",
  "application_number": "US-201916437095-A",
  "family_id": "55861274",
  "cited_by_count": 9,
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}

Record 2,085 of 8,000 in Patents full text (MLC-0201). Request the full dataset.