US3797079A - Latch and v band coupler - Google Patents

Latch and v band coupler Download PDF

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Publication number
US3797079A
US3797079A US00287765A US3797079DA US3797079A US 3797079 A US3797079 A US 3797079A US 00287765 A US00287765 A US 00287765A US 3797079D A US3797079D A US 3797079DA US 3797079 A US3797079 A US 3797079A
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US
United States
Prior art keywords
segments
latch
bolt
nut
edges
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
US00287765A
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English (en)
Inventor
L Nixon
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.)
Eaton Aeroquip LLC
Original Assignee
Aeroquip Corp
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 Aeroquip Corp filed Critical Aeroquip Corp
Application granted granted Critical
Publication of US3797079A publication Critical patent/US3797079A/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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • 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
    • F16L23/00—Flanged joints
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • F16L23/08—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
    • F16L23/10—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut with a pivoting or swinging pin
    • 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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
    • F16L3/1075—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing with two members, the two members being joined with a hinge on one side and fastened together on the other side
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1412—Bale and package ties, hose clamps with tighteners
    • Y10T24/1441—Tangential screw
    • Y10T24/1453—Pivotal strap parts

Definitions

  • the latch mechanism comprises two sections each having a web and a pair of flanges pivoted to the upper ends of the coupler segments.
  • the head of a bolt is pivoted to one latch section and extends through the web of the other, a nut on the bolt drawing the latch sections together when tightened.
  • Bridges on the latch sections initially engage the segments so as to create angular closing forces thereon.
  • the latch sections have facing edges which contact above the bolt centerline, changing the pulling angle on the segments until it is parallel to the bolt axis. Any overtorque is taken up in the latch, protecting the segments.
  • the invention relates to latch mechanisms which may be used with couplers of the V" band type having arcuate segments connected at their lower ends by a hinge and capable of drawing together ducts or other members having abutting flared flanges.
  • a problem which exists with present day constructions of this general type is that the forces are exerted by the latch mechanism on the coupling segments in directions of lesser segment strength. This may cause failure of these segments upon overtorquing of the latch mechanism.
  • Conventional latch mechanisms for such couplers are also quite expensive to manufacture.
  • the illustrated embodiment of the invention comprises a coupler having facing arcuate segments pivoted to a hinge at the bottom, and a latch mechanism for drawing together the tops of said segments.
  • the latch mechanism comprises two latch sections pivoted to said segments, a bolt having a head pivoted to one section and passing through the other section, a nut on said bolt, means responsive to rotation of said nut for drawing together said segments, bridges on said latch sections engageable with tops of said segments during initial tightening of the nut to create a combined rotational and direct pulling force on the segments, and facing edges on the segments so shaped that continued tightening of the nut will cause the edges to contact each other above the bolt axis, whereby the sections will pivot about the contacting point to shift the direction of pulling forces on the segments toward alignment with the bolt axis.
  • FIG. 1 is a side elevational view of a coupler and latch mechanism constructed in accordance with the invention, shown before tightening with the latch section bridges engaging the coupler segments.
  • FIG. 2 is a top plan view of the latch and coupler.
  • FIG. 3 is a detailed cross-sectional view taken along the line 3-3 of FIG. 1 to show the coupler segment construction.
  • FIG. 4 is a fragmentary side elevational view showing the latch mechanism just prior to reaching the proper closing torque, with the latch sections in contact and the pivot bridges lifting off the segments.
  • FIG. 5 is a fragmentary side elevational view similar to FIG. 4 but showing the contact position of the latch sections at the assembled position with the pivot bridges lifted off the segments.
  • the assembly is generally indicated at 11 and comprises a V band coupler generally indicated at 12 and a latch mechanism generally indicated at 13.
  • the coupler is by itself of conventional construction, having a pair of arcuate segments 14 and 15 pivoted to opposite ends of a hinge 16.
  • the cross-sectional shape of each segment is shown in FIG. 3, comprising a web portion 17 and diverging flanges 18 which serve to draw together complementary flanges (not shown) of aligned ducts or other members to be secured.
  • Latch mechanism 13 comprises a pair of latch sections generally indicated at 19 and 20 pivotally connected to segments 14 and 15 respectively.
  • Section 19 has a pair of side flanges 21 the lower ends of which are connected to segment 14 by a pivot pin 22, a bridge 23 connecting intermediate portions of these side flanges. This bridge is engageable with the flat upper edge 24 of segment 14 as seen in FIG. 1, but is swingable away from such contact 'to the positions shown in FIGS. 4 and 5.
  • the outwardly facing edges 25 of flanges 21 are of concave shape to accommodate the complementary surface of a spacer 26.
  • the spacer transmits forces to latch section 19 from a nut 27 mounted on a bolt 28. This bolt passes through the flanges 21 of latch section 19 and its head 29 is pivoted at 30 between the flanges 31 of latch section 20.
  • Section 20 is shaped similarly to latch section 19 in that the lower ends of flanges 31 are pivoted at 32 to the upper end of coupler segment 15.
  • Section 20 has a bridge 33, an intermediate portion thereof being engageable with the upper flat surface 34 of segment 15 when in the position of FIG. 1. As in the case of bridge 23, bridge 33 can be swung away from contact with surface 34 to the positions shown in FIGS. 4 and 5.
  • Bolt 28 is provided with a necked-down portion 35 (FIG. 2) which will rupture when excessive torque is placed on nut 27. Means are provided for preventing complete separation of the ducting or'other clamped parts when this occurs.
  • a U-shaped cage 36 has its central portion disposed between nut 27 and spacer 26, and its legs extending along opposite sides of the latch mechanism. These legs have guide slots 37 whichare retained by enlarged portions 38 on pivot 30. Thus, upon rupture of the bolt the latch mechanism will open only until pivot 30 reaches the ends of slots 37, maintaining the coupler in a semi-closed position.
  • the latch pivot means is so arranged as to allow large installation torques to be applied without overstressing coupler segments 14 and 15. This is done by changing the loading mode acting on the segments as torque is increased on nut 27, from a combined rotary and translatory force to a direct translatory force parallel to the bolt axis. This avoids overstressing the coupler segment ends and permits a lighter construction for any predetermined load requirements.
  • the means for accomplishing this comprises the facing pairs of straight edges 39 and 41 of latch sections 19 and 20 respectively, together with the relative positions of bridges 23 and 33.
  • the construction is such that during initial tightening of nut 27, as shown in FIG.
  • bridges 23 and 33 will be supported by surfaces 24 and 34 respectively of the segments.
  • the forces exerted by the latch sections on the coupler segments will be in the directions of arrows 42 and 43. These forces are the resultant of the tendency of the latch sections to rotate about contacting bridges 23 and 33 and the direct pull in the direction of the bolt axis. It will be observed that these forces are being transferred through relatively weak portions of the coupler segments.
  • a latch mechanism for drawing two parts together comprising first and second latch sections, each section having a pair of flanges pivoted to one of said parts, each part having a pair of flanges joined by an outer web, each section being pivoted by a pivot pin passing through said section flanges adjacent said web, each section further having a bridge engageable with the top of said part and a pair of straight edges facing the edges of the other latch section, and bolt and nut members interconnecting said latch sections, relative rotation of said members drawing the sections together and causing said bridges to engage the tops of said parts, whereby combined rotary and translatory forces will be exerted by said sections on said parts which will cause said pivot pins to exert an outward force component on said part flanges, continued relative rotation of said members causing said facing pairs of edges to abut each other on the side of the bolt axis opposite said parts, whereby said bridges will be lifted from engagement with said parts to reduce said outward force component and the directions of forces on said parts will be shifted toward alignment
  • a coupler having facing arcuate segments pivoted to a hinge at the bottom, each segment having a pair of flanges joined by an outer web, and a latch mechanism for drawing together the tops of said segments, said latch mechanism comprising two latch sections pivoted to said segments by pivot pins passing through said flanges adjacent said web, a bolt having a head pivoted to one section and passing through the other section, a nut on said bolt, means responsive to rotation of said nut for drawing together said segments, bridges on said latch sections between said bolt and said pivot pins engageable with tops of said segments during initial tightening of the nut to create a combined rotational and direct pulling force on the segments which will cause said pivot pins to exert an outward force component on said segment flanges, and facing edges on the segments so shaped that continued tightening of the nut will cause the edges to contact each other above the bolt axis, whereby the sections will pivot about the contacting point to reduce said outward force component and shift the direction of pulling forces on the segments toward alignment
  • a coupler having facing arcuate segments pivoted to a hinge at the bottom, and a latch mechanism for drawing together the tops of said segments
  • said latch mechanism comprising twolatch sections pivoted to said segments, a bolt having a head pivoted to one section and passing through the other section, a nut on said bolt, means responsive to rotation of said nut for drawing together said segments, bridges on said latch sections engageable with tops of said segments during initial tightening of the nut to create a combined rotational and direct pulling force on the segments, and facing edges on the segments so shaped that continued tightening of the nut will cause the edges to contact each other above the bolt axis, whereby the sections will pivot about the contacting point to shift the direction of pulling forces on the segment toward alignment with the bolt axis, said facing edges being straight whereby the edges will come into complete contact in response to increased torquing of the nut, the lower portions of the facing edges being in alignment with the bolt axis, thus preventing excessive force from being placed on the segments, said pivotal
  • a pair of V band arcuate coupler segments pivoted to a hinge at their bottoms, flat upper surfaces on said arcuate segments, a latch mechanism comprising a pair of latch sections with side flanges, lower portions of said flanges being pivoted to the upper portions of said segments, bridges on said latch sections disposed above said flat segment surfaces, a bolt pivoted to one latch section and extending through the other section, a nut on said bolt, convex spacer means between said nut and other latch section, and facing straight edges on said latch sections, the relative proportions of the parts being such that upon initial nut torquing said bridges will engage said upper any further forces on the segments.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US00287765A 1972-09-11 1972-09-11 Latch and v band coupler Expired - Lifetime US3797079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28776572A 1972-09-11 1972-09-11

Publications (1)

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US3797079A true US3797079A (en) 1974-03-19

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Application Number Title Priority Date Filing Date
US00287765A Expired - Lifetime US3797079A (en) 1972-09-11 1972-09-11 Latch and v band coupler

Country Status (4)

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US (1) US3797079A (enrdf_load_stackoverflow)
JP (1) JPS5330146B2 (enrdf_load_stackoverflow)
FR (1) FR2199088B1 (enrdf_load_stackoverflow)
GB (1) GB1439968A (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739542A (en) * 1987-02-09 1988-04-26 Aeroquip Corporation Safety coupling clamp
US5454606A (en) * 1993-02-04 1995-10-03 Voss Industries, Inc. V-retainer coupling assembly construction which prevents incorrect installation with reduced width slot
US5509702A (en) * 1994-08-23 1996-04-23 Eg&G Pressure Science, Inc. Low distortion pipe coupling device
US5513228A (en) * 1993-09-28 1996-04-30 Framatome Clamp for two tubular components, having a safety blocking device, and use of such clamp
US5522625A (en) * 1994-11-29 1996-06-04 Hoechst Marion Roussel, Inc. Coupling device
US5645303A (en) * 1994-10-27 1997-07-08 Eg&G Pressure Science, Inc. Compact pipe coupling device
FR2760510A1 (fr) * 1997-03-10 1998-09-11 Eg & G Pressure Science Inc Dispositif de serrage pour tubes et son procede de realisation
US5947533A (en) * 1996-08-02 1999-09-07 Fisher; Ronald K. Gasket assembly with elastomer expansion area
US6234545B1 (en) 1992-09-01 2001-05-22 Swagelok Company Clamped flange fitting and assembly
US20100314864A1 (en) * 2009-06-12 2010-12-16 Andy Lemke Pipe coupling
CN103851266A (zh) * 2014-02-19 2014-06-11 江苏常净环保科技有限公司 一种除尘设备管道连接用对合锁紧抱箍
US8894100B2 (en) 2012-03-16 2014-11-25 Romac Industries, Inc. Fitting with draw mechanism
US9039044B1 (en) * 2014-02-13 2015-05-26 James E. Baldwin Standoff ring and safety cage for process pipe
US20150176726A1 (en) * 2012-08-02 2015-06-25 Gripple Limited Hanger for an elongate article
US9851260B2 (en) * 2013-07-24 2017-12-26 Tlv Co., Ltd. Sensor fixture
US10288195B2 (en) * 2017-02-03 2019-05-14 Airbus Operations Sas Clip for fastening a pipe to a support
NO20171880A1 (en) * 2017-11-24 2019-05-27 Aker Solutions As Clamp connector
US11009154B1 (en) * 2019-10-29 2021-05-18 Cycle Name Industries Co., Ltd. Adjustable clamp structure
US11274777B2 (en) 2009-06-12 2022-03-15 Romac Industries, Inc. Pipe coupling

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147290A (en) * 1980-04-16 1981-11-16 Toa Electric Co Ltd Automatic vending system for real time information
JPH0535249Y2 (enrdf_load_stackoverflow) * 1988-03-31 1993-09-07
GB2471838B (en) * 2009-07-13 2014-02-19 Michael Joseph Zabrana Segmental clamp

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638761A (en) * 1946-10-17 1950-06-14 Bendix Aviat Corp Improvements in the attachment of accessories to power plant such as aircraft engines
GB663646A (en) * 1948-10-26 1951-12-27 British Tanker Company Ltd Improvements relating to couplings for pipes having flanged ends
CA553141A (en) * 1958-02-11 A. E. Oldham Charles Pipe joints
GB1104922A (en) * 1963-08-01 1968-03-06 Avica Equip Improvements in and relating to pipe couplings
US3661409A (en) * 1969-08-14 1972-05-09 Gray Tool Co Multi-segment clamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853762A (en) * 1957-02-07 1958-09-30 Telford L Smith Pipe clamp or coupling and lug units therefor
FR1403430A (fr) * 1964-07-30 1965-06-18 Avica Equip Accouplements de conduites

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA553141A (en) * 1958-02-11 A. E. Oldham Charles Pipe joints
GB638761A (en) * 1946-10-17 1950-06-14 Bendix Aviat Corp Improvements in the attachment of accessories to power plant such as aircraft engines
GB663646A (en) * 1948-10-26 1951-12-27 British Tanker Company Ltd Improvements relating to couplings for pipes having flanged ends
GB1104922A (en) * 1963-08-01 1968-03-06 Avica Equip Improvements in and relating to pipe couplings
US3661409A (en) * 1969-08-14 1972-05-09 Gray Tool Co Multi-segment clamp

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278586A1 (en) * 1987-02-09 1988-08-17 Aeroquip AG Safety coupling clamp
US4739542A (en) * 1987-02-09 1988-04-26 Aeroquip Corporation Safety coupling clamp
US6234545B1 (en) 1992-09-01 2001-05-22 Swagelok Company Clamped flange fitting and assembly
US5454606A (en) * 1993-02-04 1995-10-03 Voss Industries, Inc. V-retainer coupling assembly construction which prevents incorrect installation with reduced width slot
US5513228A (en) * 1993-09-28 1996-04-30 Framatome Clamp for two tubular components, having a safety blocking device, and use of such clamp
US5509702A (en) * 1994-08-23 1996-04-23 Eg&G Pressure Science, Inc. Low distortion pipe coupling device
US5645303A (en) * 1994-10-27 1997-07-08 Eg&G Pressure Science, Inc. Compact pipe coupling device
US5522625A (en) * 1994-11-29 1996-06-04 Hoechst Marion Roussel, Inc. Coupling device
US5947533A (en) * 1996-08-02 1999-09-07 Fisher; Ronald K. Gasket assembly with elastomer expansion area
US5873611A (en) * 1997-03-10 1999-02-23 Eg&G Pressure Science, Inc. Pipe clamping device
FR2760510A1 (fr) * 1997-03-10 1998-09-11 Eg & G Pressure Science Inc Dispositif de serrage pour tubes et son procede de realisation
US9303801B2 (en) 2009-06-12 2016-04-05 Romac Industries, Inc. Pipe coupling
US20100314864A1 (en) * 2009-06-12 2010-12-16 Andy Lemke Pipe coupling
US8448993B2 (en) 2009-06-12 2013-05-28 Romac Industries, Inc. Pipe coupling
US11274777B2 (en) 2009-06-12 2022-03-15 Romac Industries, Inc. Pipe coupling
US10253909B2 (en) 2009-06-12 2019-04-09 Romac Industries, Inc. Pipe coupling
US8894100B2 (en) 2012-03-16 2014-11-25 Romac Industries, Inc. Fitting with draw mechanism
US9534714B2 (en) 2012-03-16 2017-01-03 Romac Industries, Inc. Fitting with draw mechanism
US9915385B2 (en) 2012-03-16 2018-03-13 Romac Industries, Inc. Fitting with draw mechanism
US20150176726A1 (en) * 2012-08-02 2015-06-25 Gripple Limited Hanger for an elongate article
US9377134B2 (en) * 2012-08-02 2016-06-28 Gripple Limited Hanger for an elongate article
US9851260B2 (en) * 2013-07-24 2017-12-26 Tlv Co., Ltd. Sensor fixture
US9039044B1 (en) * 2014-02-13 2015-05-26 James E. Baldwin Standoff ring and safety cage for process pipe
CN103851266A (zh) * 2014-02-19 2014-06-11 江苏常净环保科技有限公司 一种除尘设备管道连接用对合锁紧抱箍
US10288195B2 (en) * 2017-02-03 2019-05-14 Airbus Operations Sas Clip for fastening a pipe to a support
NO20171880A1 (en) * 2017-11-24 2019-05-27 Aker Solutions As Clamp connector
NO344824B1 (en) * 2017-11-24 2020-05-11 Aker Solutions As Clamp connector
US11009154B1 (en) * 2019-10-29 2021-05-18 Cycle Name Industries Co., Ltd. Adjustable clamp structure

Also Published As

Publication number Publication date
JPS5330146B2 (enrdf_load_stackoverflow) 1978-08-25
DE2343969B2 (de) 1976-03-18
FR2199088A1 (enrdf_load_stackoverflow) 1974-04-05
DE2343969A1 (de) 1974-03-21
FR2199088B1 (enrdf_load_stackoverflow) 1977-05-13
JPS4964999A (enrdf_load_stackoverflow) 1974-06-24
GB1439968A (en) 1976-06-16

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