GB2267324A - Multiposition swivel coupling for use with an articulating fume extraction arm. - Google Patents

Multiposition swivel coupling for use with an articulating fume extraction arm. Download PDF

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Publication number
GB2267324A
GB2267324A GB9206167A GB9206167A GB2267324A GB 2267324 A GB2267324 A GB 2267324A GB 9206167 A GB9206167 A GB 9206167A GB 9206167 A GB9206167 A GB 9206167A GB 2267324 A GB2267324 A GB 2267324A
Authority
GB
United Kingdom
Prior art keywords
swivel coupling
swivel
multiposition
coupling
locking
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.)
Granted
Application number
GB9206167A
Other versions
GB9206167D0 (en
GB2267324B (en
Inventor
Philip Arthur Mullins
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB9206167A priority Critical patent/GB2267324B/en
Publication of GB9206167D0 publication Critical patent/GB9206167D0/en
Publication of GB2267324A publication Critical patent/GB2267324A/en
Application granted granted Critical
Publication of GB2267324B publication Critical patent/GB2267324B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0837—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends
    • F16L27/0845—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends forming an angle of 90 degrees
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0849—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Joints Allowing Movement (AREA)

Abstract

A multiposition swivel coupling for use in an articulating fume extraction arm (Fig 3) comprises a pair of conical coupling members 2, 3 each arranged to swivel relative to the other and means 10, 11, 12, 13, 8, 14 for locking and tightening members 2, 3 together in one of a multiplicity of relative angular orientations. In another embodiment the swivel coupling comprises a pair of coupling members 2, 3; means 10, 11, 12, 13, 14 for locking and tightening members 2, 3 together and multi-waved toothed or pointed locking cam profiles 8 on the mating- faces. <IMAGE>

Description

Description Multiposition Swivel Coupling for use with a fume extraction arm To be read in coniunction with Drawing No. 1011 Articulating arms are used throughout industry to remove fumes at source.
Typically each Articulating arm would remove fumes from an area of about 300mum=1. The existing fume extraction arms consist of tubes joined together by rotary swivel couplings which enable the end of the arm to be positioned over the area where extraction is required.
Currently these swivel couplings are manufactured as two identical hemispherical halves sealed by an '0' ring. The two halves are then bolted together so as to compress the seal. By slackening the bolt off, the swivel coupling can be adjusted and repositioned. Unfortunately the action of tightening the bolt causes the crown of the hemispherical swivel coupling to distort inwards. This distortion results in a loss of tension which is restored by re-tightening the handwheels. Repeated tightening and distortion ultimately causes the coupling half to collapse, thus allowing the arms to pivot downwards.
own owt involvment in redesigning the swivel coupling followed an incident where one of the above arms, with hemispherical swivel couplings, fell into a machine.
The following to be read in conjunction with Drawing No. 1011 Fig (7 > Our invention provides a new style coupling, replacing the hemispherical couplings with conical shaped couplings wbose inherent geometric shape substantially strengthens the coupling's ability to withstand distortion during compression, (i.e. during locking and tightening functions).
The following to be read in conjunction with Drawing No. 1010 Figs (1) (2) (3) and items marked alternative locking and sealing cam profiles.
In addition to the above, instead of using the existing idea which consists of two identical halves sealed by an '0' ring (which requires a substantial compression force before it can be held rigid, Ref Drawing No. 1011 (6) and (7)), our invention provides two different conical shaped male and female coupling halves, whose tapered tongue and groove moulded seal incorporate a multi wave shaped cam profile on the mating faces.
The halves are held in position with a central locking bolt acting on two convex springs which force the cams to lock together. Because of the locking action of the cams, the halves are held rigid with a greatly reduced compression force, thus preventing distortion of the coupling half and possthle co7lapse, As the halves are not locked in position by the bolt but rather pushed together by the spring tension created by the convex spring washers, the couplings can be rotated without losening the locking bolt.
A specific embodiment of the invention will now be described by way of an accompanying drawing No. 1010 Figs (1) (2), (3) and Drawing No. 1011 Items (1) (2) (3) (4) (5) (6) (7)

Claims (10)

  1. Claims 1. A multiposition swivel coupling for use with an articulating arm.
    Ref. accompanying drawing No. 1010 and drawing No. 1011 item (7).
    2. A multiposition swivel coupling as claimed in (1) moulded into a conical shape to prevent distortion during compression load, i.e.
    locking the joint, holding the joint in position. (The conical shape is a major feature of the design and absolutely critical to the strength of the joint).
    3. A multiposition swivel coupling as claimed in (1) and (2) incorporating a tongue and groove seal.
    4. A multiposition swivel coupling as claimed in (1) (2) and (3) positioned by a multi-wave cam profile moulded at the mating faces of the tongue and groove seal.
    5. A multiposition swivel coupling as claimed in (1) (2) (3) and (4) positioned by a multi-pointed or multi-toothed cam profile as in "Alternative locking and sealing cam profiles" drawing No. 1010.
    6. A multiposition swivel coupling as claimed in (1) (2) (3) (4) and (5) held in position by a spring loaded bolt. The spring loading is provided by two convex spring washers (shown in section A-A Drawing No. 1010).
    7. A multiposition swivel coupling as claimed in (1) (2) (3) (4) (5) and (6), not necessarily conical in shape but with a multi-wave-toothed or pointed locking cam profile. (See note (5) in Abstract).
    Amendments to the claims have been filed as follows 1. A swivel coupling for use with a fume extraction arm, the swivel coupling comprising a pair of conical coupling members, each being arranged to swivel with respect to the other, and means for locking and tightening the conical members together in one of a multiplicity of relative angular orientations.
  2. 2. A swivel coupling according to Claim 1 incorporating a tongue and groove seal.
  3. 3. A swivel coupling according to Claim 2 wherein the tongue and the groove constituting the seal have mating faces each provided with a multi-wave cam profile.
  4. 4. A swivel coupling according to Claim 2 wherein the tongue and the groove constituting the seal have mating faces each provided with a multi-pointed or multi-toothed cam profile.
  5. 5. A swivel coupling according to any one of the preceding Claims wherein the conical coupling members are held in position by means of a spring-loaded bolt.
  6. 6. A swivel coupling according to Claim 5 wherein the spring loading is provided by a pair of convex spring washers.
  7. 7. A swivel coupling for use with a fume extraction arm, the swivel coupling comprising a pair of coupling members, each being arranged to swivel with respect to the other, and means for locking and tightening the members together in one of a multiplicity of relative angular orientations, the coupling members being provided with mating faces having multi-waved toothed or pointed locking cam profiles.
  8. 8. A swivel coupling substantially as described herein with reference to the accompanying drawings Figures 1A to 4D, and 6C.
  9. 9. A fume extraction arm assembly comprising a plurality of tubular fume extraction arms coupled together by a swivel coupling or couplings as defined in any one of the preceding Claims.
  10. 10. A fume extraction arm assembly substantially as described herein with reference to the accompanying drawings Figures 1A to 4D, and 6C.
GB9206167A 1992-03-20 1992-03-20 Multiposition swivel coupling for use with a fume extraction arm Expired - Fee Related GB2267324B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9206167A GB2267324B (en) 1992-03-20 1992-03-20 Multiposition swivel coupling for use with a fume extraction arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9206167A GB2267324B (en) 1992-03-20 1992-03-20 Multiposition swivel coupling for use with a fume extraction arm

Publications (3)

Publication Number Publication Date
GB9206167D0 GB9206167D0 (en) 1992-05-06
GB2267324A true GB2267324A (en) 1993-12-01
GB2267324B GB2267324B (en) 1995-03-22

Family

ID=10712562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9206167A Expired - Fee Related GB2267324B (en) 1992-03-20 1992-03-20 Multiposition swivel coupling for use with a fume extraction arm

Country Status (1)

Country Link
GB (1) GB2267324B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1084604A1 (en) * 1999-09-17 2001-03-21 Campagnola S.R.L. Pneumatic articulated joint particularly for pneumatic tool
WO2008140361A1 (en) * 2007-05-11 2008-11-20 Fumex Ab Mounting device, joint construction, ventilating arm, ventilating system
WO2012033452A1 (en) * 2010-09-10 2012-03-15 Fumex Ab Joint construction, ventilation arm and ventilation system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1093159A (en) * 1965-06-18 1967-11-29 Commissariat Energie Atomique Leak-tight movable pipe coupling

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1093159A (en) * 1965-06-18 1967-11-29 Commissariat Energie Atomique Leak-tight movable pipe coupling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1084604A1 (en) * 1999-09-17 2001-03-21 Campagnola S.R.L. Pneumatic articulated joint particularly for pneumatic tool
WO2008140361A1 (en) * 2007-05-11 2008-11-20 Fumex Ab Mounting device, joint construction, ventilating arm, ventilating system
CN101678408B (en) * 2007-05-11 2012-09-26 福迈克斯股份公司 Mounting device, joint construction, ventilating arm, ventilating system
WO2012033452A1 (en) * 2010-09-10 2012-03-15 Fumex Ab Joint construction, ventilation arm and ventilation system
CN103118811A (en) * 2010-09-10 2013-05-22 福迈克斯有限公司 Joint construction, ventilation arm and ventilation system
CN103118811B (en) * 2010-09-10 2014-11-26 福迈克斯有限公司 Joint construction, ventilation arm and ventilation system
EP2613894A4 (en) * 2010-09-10 2016-09-21 Fumex Ab Joint construction, ventilation arm and ventilation system

Also Published As

Publication number Publication date
GB9206167D0 (en) 1992-05-06
GB2267324B (en) 1995-03-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010320