GB2361753A - Tube clamp - Google Patents

Tube clamp Download PDF

Info

Publication number
GB2361753A
GB2361753A GB0005613A GB0005613A GB2361753A GB 2361753 A GB2361753 A GB 2361753A GB 0005613 A GB0005613 A GB 0005613A GB 0005613 A GB0005613 A GB 0005613A GB 2361753 A GB2361753 A GB 2361753A
Authority
GB
United Kingdom
Prior art keywords
clevis
tangs
clamp
screw
nut
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
GB0005613A
Other versions
GB0005613D0 (en
GB2361753B8 (en
GB2361753B (en
GB2361753A8 (en
Inventor
Roy Peter Maunder
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.)
Bio Pure Technology Ltd
Original Assignee
Bio Pure Technology Ltd
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 Bio Pure Technology Ltd filed Critical Bio Pure Technology Ltd
Priority to GB0005613A priority Critical patent/GB2361753B8/en
Publication of GB0005613D0 publication Critical patent/GB0005613D0/en
Publication of GB2361753A publication Critical patent/GB2361753A/en
Application granted granted Critical
Publication of GB2361753B publication Critical patent/GB2361753B/en
Publication of GB2361753B8 publication Critical patent/GB2361753B8/en
Publication of GB2361753A8 publication Critical patent/GB2361753A8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Abstract

A clamp comprises a pair of generally semicircular tangs 1, 2 hinged together at one end and connectable together at the other end by means of a screw 5 and nut 4. The tangs have an inwards facing tapered groove 7 for drawing two flanged tubes T into sealing engagement, the screw having a cross-head 6 for engaging in a clevis in one of the tangs, and the clevis having a cross piece 14 distal of the tang for stabilising the clevis and limiting angular displacement of the screw. Preferably the tangs have complementary conical formations 21, 24 for restraining the clevis from spreading as the nut is tightened.

Description

2361753 TUBECLANIP The present invention relates to a tube clamp and in
particular a clamp for use with flanged tubes for food and related industries.
Flanges for food industry tubes are prescribed by BS 4825 Part 3 and equivalent ISO 2852 and various clamps are available connecting such flanged tubes. Generally these have been of stainless steel and expensive.
The object of the present invention is to provide an improved tube clamp and in particular a clamp of plastics material.
A clamp of the invention comprises a pair of generally semi-circular tangs, hinged together at one end and connectable together at the other end by means of a screw and nut, the tangs having an inwards facing tapered groove for drawing two flanged tubes into sealing engagement, the screw having a crossbar for engaging in a clevis in one of the tangs, the clevis having a cross piece distal of the tang for stabilising the clevis and limiting angular displacement of the screw.
Preferably, the other tang also has a clevis for receiving the screw, this clevis and the nut have complementary conical formations for restraining the clevis from spreading as the nut is tightened.
C) To help understanding of the invention, a specific embodiment thereof will now be described by way of example and with reference to the accompanying drawings, in which:
Figure I is a cross-sectional front view of a clamp of the invention connecting to flanged tubes, Figure 2 is a cross-sectional end view of the clamp when closed, the tubes being omitted Figure 3 is a similar view of the clamp when open; Figure 4 is a plan view of one tang, and Figure 5 is a plan view of another tang.
2 The clamp shown in the drawing has two injection moulded tangs 1,2. They are hinged together by a pin 3 and held closed by a wing nut 4 and a screw 5 having a cross-head 6. The tangs each have a tapered groove 7 running around inside them. In use, this engages flanges F on tubes T with a seal S therebetween to hold the tubes in 5 sealing relationship with each other.
The one tang 1 has a clevis 10 defined by two lugs 11. Each has an overhung recess 12 into which the cross-head 6 of the screw clips. A crossbar 14 connects the lugs remote from their tang, whereby the screw is limited in its angular displacement about the recesses 12, as shown in Figure 3. The crossbar also stabilises the lugs against relative displacement under load when the nut is tightened.
C The other tang 2 has a part conical formation 21 on lugs 22 defining a clevis 23 similar to that 10. The nut has a complementary conical recess 24. Engagement of the formation 21 in the recess 24 restrains the lugs from separating under load as the nut is tightened. As the nut is tightened mutual approach of the tangs is limited by It, projections 25 on the lugs 22 towards the lugs 11 to avoid over- tightening.
3

Claims (5)

CLAIMS:
1. A clamp comprising pair of generally semi-circular tangs, hinged together at 0 one end and connectable together at the other end by means of a screw and nut, the tangs having an inwards facing tapered groove for drawing two flanged tubes into sealing engagement, the screw having a crossbar for engaging in a clevis in one of the tangs, the clevis having a cross piece distal of the tang for stabilising the clevis and limiting angular displacement of the screw.
2. A clamp as claimed in claim 1, wherein the clevis is defined by two lugs, each having an overhung recess into which the cross-head clips.
3. A clamp as claimed in claim 1 or claim 2, wherein the other tang also has a clevis for receiving the screw, this clevis and the nut have complementary conical formations for restraining the clevis from spreading as the nut is tightened.
4. A clamp as claimed in any preceding claim, including a projections for limiting approach of the tangs and over-tightening of the clamp.
5. A clamp substantially as hereinbefore described with reference to the accompanying drawings.
GB0005613A 2000-03-09 2000-03-09 Tube clamp Expired - Lifetime GB2361753B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0005613A GB2361753B8 (en) 2000-03-09 2000-03-09 Tube clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0005613A GB2361753B8 (en) 2000-03-09 2000-03-09 Tube clamp

Publications (5)

Publication Number Publication Date
GB0005613D0 GB0005613D0 (en) 2000-05-03
GB2361753A true GB2361753A (en) 2001-10-31
GB2361753B GB2361753B (en) 2004-04-07
GB2361753B8 GB2361753B8 (en) 2006-02-10
GB2361753A8 GB2361753A8 (en) 2006-02-10

Family

ID=9887233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0005613A Expired - Lifetime GB2361753B8 (en) 2000-03-09 2000-03-09 Tube clamp

Country Status (1)

Country Link
GB (1) GB2361753B8 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2453608A (en) * 2007-10-12 2009-04-15 Bio Pure Technology Ltd Clamp hinge which prevents unwanted rotation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544138A (en) * 1969-04-07 1970-12-01 Ulrich C Von Eiff Coupling assembly for conduits
GB2323139A (en) * 1997-03-10 1998-09-16 Eg & G Pressure Science Inc Pipe clamping device
GB2352475A (en) * 1999-11-17 2001-01-31 Jarzon Plastics Ltd Nut and seat assembly for clamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544138A (en) * 1969-04-07 1970-12-01 Ulrich C Von Eiff Coupling assembly for conduits
GB2323139A (en) * 1997-03-10 1998-09-16 Eg & G Pressure Science Inc Pipe clamping device
GB2352475A (en) * 1999-11-17 2001-01-31 Jarzon Plastics Ltd Nut and seat assembly for clamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2453608A (en) * 2007-10-12 2009-04-15 Bio Pure Technology Ltd Clamp hinge which prevents unwanted rotation
EP2048424A1 (en) 2007-10-12 2009-04-15 Bio Pure Technology Limited Clamp
GB2453608B (en) * 2007-10-12 2012-04-18 Bio Pure Technology Ltd Clamp

Also Published As

Publication number Publication date
GB0005613D0 (en) 2000-05-03
GB2361753B8 (en) 2006-02-10
GB2361753B (en) 2004-04-07
GB2361753A8 (en) 2006-02-10

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Legal Events

Date Code Title Description
713D Proc. under sect. 13(1) pat. act 1977 ** appl. filed
713H Application filed for a person not to be mentioned as an inventor - section 13(3) pat. acts 1972
713C Proceeding under section 13(3) of the patents act 1977
713F Application for mention of inventor (sect. 13(1)/1977) allowed
PE20 Patent expired after termination of 20 years

Expiry date: 20200308