GB2241995A - Round tube locking device under compression - Google Patents

Round tube locking device under compression Download PDF

Info

Publication number
GB2241995A
GB2241995A GB9006059A GB9006059A GB2241995A GB 2241995 A GB2241995 A GB 2241995A GB 9006059 A GB9006059 A GB 9006059A GB 9006059 A GB9006059 A GB 9006059A GB 2241995 A GB2241995 A GB 2241995A
Authority
GB
United Kingdom
Prior art keywords
securing
round tubes
tubes
under compression
round 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.)
Withdrawn
Application number
GB9006059A
Other versions
GB9006059D0 (en
Inventor
Colin Joseph Harwood
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 GB9006059A priority Critical patent/GB2241995A/en
Publication of GB9006059D0 publication Critical patent/GB9006059D0/en
Publication of GB2241995A publication Critical patent/GB2241995A/en
Withdrawn legal-status Critical Current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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1445—Telescoping systems locking in intermediate non-discrete positions with a rubber bushing gripping inside the outer telescoping member by a radial expansion due to its axial compression
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1463—Telescoping systems locking in intermediate non-discrete positions with the expansion of an element inside the outer telescoping member due to the axial movement towards a wedge or a conical member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention allows two round tubes 1, 2 one inside the other to be extended and locked in position without the aid of external securing. Rubber bush 7 is expanded by nylon cone 8 into locking engagement with outer tube 1 under the influence of compression spring 6 and released by pressure on bar 3 via rod 4. <IMAGE>

Description

ROUND TUBE LOCKING DEVICE UNDER COMPRESSION This invention relates to the temporary locking in compression of one round tube inside another at any level.
Means available at present involve thumb screws, camlock devices or pins to secure one round tube inside another.
According to the present invention there is provided a means whereby one round tube inside another can be secured at variable heights without the assistance of thumb screws, camlock devises or pins.
A specific embodiment will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows sectional view of the said tubes in rest position ie. locked.
Figure 2 shows sectional view of the said tubes in unlocked position.
Refering to the drawings, the devise comprises of: An outer tube 1. with an inner tube 2. blanked off at base 2A with centre hole for passage of Control Rod 4. Control Bar 3. Control Rod Washer 5. Compression Spring 6. Rubber Bush 7. Nylon Cone 8.
In order to extend the inner tube 2 to the required position, hold outer tube 1 firmly in one hand and using free hand extend inner tube 2 to required position.
The inner tube 2 can not now be depressed into the outer tube 1.
In order to depress inner tube 2 into outer tube 1 it is necessary to hold outer tube 1 firmly with one hand and with one finger of free hand press control bar 3 back towards outer tube 1 until the required position is reached.
During the operating procedure the locking mechanism functions as follows: When the said tubes are at rest ie. locked under compression as illustrated in Figure 1. The rubber bush 7 is expanded to make full internal surface contact with the inner wall of the outer tube 1 by the nylon cone 8 being drawn up by the compression spring 6 acting against the control rod washer 5 which is fixed to the control rod 4.
When the said tubes are free ie. unlocked, under compression as illustrated in Figure 2.
The control bar 3 is drawn back towards outer tube 1, the nylon cone 8 is retracted from the rubber bush 7 by means of a direct link between control bar 3 and nylon cone 8 made by control rod 4.
As the nylon cone 8 is retracted from the rubber bush 7 thus allowing the rubber bush 7 to contract slightly and therefore lose contact with the inner walls of the outer tube 1.
There is now no friction and the said tubes can be drawn back together.

Claims (5)

1 As a means of securing two round tubes one inside the other without external means of fastening.
2 As a means of securing two round tubes one inside the other as claimed in claim 1 wherein the lines of the said tube are unbroken and therefore more aesthetically pleasing.
3 As a means of securing two round tubes one inside the other as claimed in claim 1 which during the extension procedure the said tubes can not accidently retract as invention is always in the locked position until the control bar 3 is depressed.
4 As a means of securing two round tubes one inside the other, the locked position is not acheived by the tightening of any part and therefore can be released with minimal effort, unlike thumb screws which can be over-tightened.
5 As a means of securing two round tubes one inside the other as claimed in claim 4, there is no possibility of the invention damaging the form of either tube and resulting in malfunction, as could happen with thumb screws.
GB9006059A 1990-03-17 1990-03-17 Round tube locking device under compression Withdrawn GB2241995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9006059A GB2241995A (en) 1990-03-17 1990-03-17 Round tube locking device under compression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9006059A GB2241995A (en) 1990-03-17 1990-03-17 Round tube locking device under compression

Publications (2)

Publication Number Publication Date
GB9006059D0 GB9006059D0 (en) 1990-05-16
GB2241995A true GB2241995A (en) 1991-09-18

Family

ID=10672796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9006059A Withdrawn GB2241995A (en) 1990-03-17 1990-03-17 Round tube locking device under compression

Country Status (1)

Country Link
GB (1) GB2241995A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279420A (en) * 1993-06-29 1995-01-04 Anthony Carey Telescopic connections
DE4408469A1 (en) * 1994-03-12 1995-09-14 Licentia Gmbh Holding mechanism for a tubular workpiece
FR2722465A1 (en) * 1994-07-15 1996-01-19 Remin Lab HANDLE ASSEMBLY FOR TROLLEY AND LUGGAGE ON WHEELS
WO1996041972A1 (en) * 1995-06-08 1996-12-27 Lord Corporation Dual-rate linear damper
WO1997017047A1 (en) * 1995-11-07 1997-05-15 Ferno Washington, Inc. Extendable handgrip control for a stretcher undercarriage
AU703813B2 (en) * 1995-11-07 1999-04-01 Ferno-Washington Inc. Extendable handgrip control for a stretcher undercarriage
WO2002018802A1 (en) * 2000-09-03 2002-03-07 Fast Industriprodukter Handelsbolag Device for relative fixing of elements telescopicall displaced in each other
WO2002076264A1 (en) * 2001-03-23 2002-10-03 Esma Di Boaro Decimo A telescopic support rod and a method of bringing about locking between two tubular elements thereof
EP1376054A1 (en) * 2002-06-28 2004-01-02 Black & Decker Inc. Laser level system
EP2672128A1 (en) * 2012-06-05 2013-12-11 Samsung Medison Co., Ltd. Locking device for pipe member
US8967170B1 (en) * 2013-11-18 2015-03-03 Valor Enterprise Co., Ltd. Adjustable positioning structure for a walking stick
CN104554050A (en) * 2013-10-09 2015-04-29 曼卡车和巴士股份公司 Barrier structure fo wheelchair space in vehicle
CN112207748A (en) * 2020-09-30 2021-01-12 中国建筑第五工程局有限公司 Spanner for fastening high-strength bolt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1162850A (en) * 1966-12-31 1969-08-27 William Eric Davies Improvements in Slidable Supports

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1162850A (en) * 1966-12-31 1969-08-27 William Eric Davies Improvements in Slidable Supports

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279420A (en) * 1993-06-29 1995-01-04 Anthony Carey Telescopic connections
DE4408469A1 (en) * 1994-03-12 1995-09-14 Licentia Gmbh Holding mechanism for a tubular workpiece
FR2722465A1 (en) * 1994-07-15 1996-01-19 Remin Lab HANDLE ASSEMBLY FOR TROLLEY AND LUGGAGE ON WHEELS
US5732443A (en) * 1994-07-15 1998-03-31 Remin Laboratories, Inc. Handle assembly with an actuator and release apparatus
WO1996041972A1 (en) * 1995-06-08 1996-12-27 Lord Corporation Dual-rate linear damper
WO1997017047A1 (en) * 1995-11-07 1997-05-15 Ferno Washington, Inc. Extendable handgrip control for a stretcher undercarriage
AU703813B2 (en) * 1995-11-07 1999-04-01 Ferno-Washington Inc. Extendable handgrip control for a stretcher undercarriage
US5987673A (en) * 1995-11-07 1999-11-23 Ferno-Washington, Inc. Undercarriage extension
WO2002018802A1 (en) * 2000-09-03 2002-03-07 Fast Industriprodukter Handelsbolag Device for relative fixing of elements telescopicall displaced in each other
US7144180B2 (en) * 2000-09-03 2006-12-05 Ragnar Stahle Device for relative fixing of elements telescopically displaced in each other
EP1825965A1 (en) * 2000-09-03 2007-08-29 Fast Industriprodukter Hb A method for mopping floors involving the use of a telescopically adjustable handle
WO2002076264A1 (en) * 2001-03-23 2002-10-03 Esma Di Boaro Decimo A telescopic support rod and a method of bringing about locking between two tubular elements thereof
EP1376054A1 (en) * 2002-06-28 2004-01-02 Black & Decker Inc. Laser level system
US6804893B2 (en) 2002-06-28 2004-10-19 Black & Decker Inc. Laser leveling system
EP2672128A1 (en) * 2012-06-05 2013-12-11 Samsung Medison Co., Ltd. Locking device for pipe member
CN104554050A (en) * 2013-10-09 2015-04-29 曼卡车和巴士股份公司 Barrier structure fo wheelchair space in vehicle
US8967170B1 (en) * 2013-11-18 2015-03-03 Valor Enterprise Co., Ltd. Adjustable positioning structure for a walking stick
CN112207748A (en) * 2020-09-30 2021-01-12 中国建筑第五工程局有限公司 Spanner for fastening high-strength bolt

Also Published As

Publication number Publication date
GB9006059D0 (en) 1990-05-16

Similar Documents

Publication Publication Date Title
GB2241995A (en) Round tube locking device under compression
US6123308A (en) Shower holder
EP1122486B1 (en) Tripod
JP2842625B2 (en) Push-in fastener
US5549407A (en) Locking mechanism for telescoping tubular poles
US6394690B1 (en) Connection fitting with an attachment projection divided by slits into holding tongues
CA2118562C (en) Bone screw
CA2120576A1 (en) Fully Retractable Captive Screw
WO2002027196A3 (en) Quick access rubber panel fastener
CA2045268A1 (en) Coupling device for a corrugated pipe or hose
US5649256A (en) Adjustable means for a monitor camera
US4019708A (en) Latchable swivel mount for loudspeaker
GB2285088A (en) Connector
RU2002133452A (en) EXTENDED ASSEMBLY ASSEMBLY FOR INSTALLING A SPRAY HEAD IN A WALL
USH1947H1 (en) Expandable police baton
EP0264276A3 (en) Vibration and/or noise isolating device
JP3858180B2 (en) Shaft slide lock device
USD396477S (en) Automotive resonator
USD354208S (en) Hooked caulking gun
JPS6021534Y2 (en) telescopic tube
USD380843S (en) Wall Component
US5989050A (en) Structure of a connector for a microphone
JPH02169490A (en) Sheet pipe suspending tool
TWI288093B (en) Device for quickly locking a windshield to a two-wheeled vehicle
JPH0639130Y2 (en) Thrust device

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)