GB2319742A - Tool with telescopic handle - Google Patents

Tool with telescopic handle Download PDF

Info

Publication number
GB2319742A
GB2319742A GB9723606A GB9723606A GB2319742A GB 2319742 A GB2319742 A GB 2319742A GB 9723606 A GB9723606 A GB 9723606A GB 9723606 A GB9723606 A GB 9723606A GB 2319742 A GB2319742 A GB 2319742A
Authority
GB
United Kingdom
Prior art keywords
tool
handle
head
shaft
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Withdrawn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
GB9723606A
Other versions
GB9723606D0 (en
Inventor
William Nutter
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.)
Colebrand Ltd
Original Assignee
Colebrand 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
Priority to GBGB9623129.5A priority Critical patent/GB9623129D0/en
Application filed by Colebrand Ltd filed Critical Colebrand Ltd
Publication of GB9723606D0 publication Critical patent/GB9723606D0/en
Publication of GB2319742A publication Critical patent/GB2319742A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25GHANDLES FOR HAND IMPLEMENTS
    • B25G1/00Handle constructions
    • B25G1/04Handle constructions telescopic; extensible; sectional

Abstract

A tool comprises a tool head 10 attached to one end of a shaft 11. A handle is formed of two portions with the shaft forming a first portion 12 and a second portion 13 slidable over the shaft forming the second portion such that the handle is telescopic. The first portion has a series of holes 23 arranged along its length. The second portion has engaging means comprising a lever-operated button 18 which cooperates with the holes to locate the portions in fixed relation. Button 18 is released by movement of lever 17 about a pivot 21 against a biassing force from spring 19. The tool head may be a hammer head and a region of the shaft adjacent the hammer head is wrapped in rubber bands. The handle portions may be of elliptical cross-section.

Description

TOOL This invention relates to a tool with a handle of adjustable length formed by one portion which telescopes within another portion.
Alternative aspects of the invention are set out in claims 1 and 4.
An example of the invention will now be described with reference to the accompanying drawings in which: Figure 1 is a side elevation of a tool with its handle in its extended position, Figure 2 is a side elevation of the tool of Figure 1 with its handle in its closed position, Figure 3 is a plan of the tool of Figure 1 with its handle in its extended position and Figure 4 is a section on line A-A of Figure 3, to a larger scale.
The tool illustrated in the drawings has a cast-iron hammer-head 10 fixed to a shaft 11 with two-pack epoxy resin adhesive. The shaft is formed from two telescoping aluminium tubes 6 of elliptical shape, the major axis of the tube being aligned with the major dimension of the hammer-head, which is transverse to the axis of the shaft. The hammer-head is intended to strike the workpiece in the direction of the major dimension, indicated by the arrow A. The region of the shaft adjacent the cast-iron hammer-head is wrapped with rubber bands 14 to protect the shaft from fracture should the user misdirect the tool and cause the end of the shaft adjacent the hammer-head to impact the workpiece.
The two portions of the shaft telescope from the fully open position as shown in Figure 1 to the fully closed position shown in Figure 2, with the portion 12 of the shaft fixed to the hammer-head sliding inside the remote portion 13.
The remote portion is provided with a sleeve 15 on its end closer to the hammer-head, the sleeve extending slightly beyond the free end of the shaft portion. The sleeve is secured to the aluminium shaft by a pin 16 inserted into a hole drilled in the sleeve adjacent the underside of the tube.
On the top side of the tube a lever 17 provided with a locating button 18 is pivoted about a shaft 21 mounted between longitudinal walls 22 extending outwards from the sleeve. The lever 17 is biased by a spring 19 so that the locating button is urged towards the outer surface of the first tube. The first tube is drilled with a plurality of locating holes 23 on the major axis of the elliptical cross-section of the tube (preferably at least three and in the illustrated embodiment seven) into which the locating button 18 can be inserted at the appropriate relative position of the two portionsof the shaft. In order to adjust the length of the shaft, the lever 17 is depressed against the bias of the spring 19 to lift the locating button 18 out of a locating hole 23, the two portions are moved relative to each other until the button is aligned with a further locating hole and the lever is released so that the button enters the further hole so that the two portions of the shaft are then fixed relative to each other and the tool can be used with the new effective length of shaft.
The elliptical aluminium tube 12 has a round carbon fibre tube secured within it with flexible epoxy resin. In this embodiment, the tube 12 has a maximum outside diameter of 40 mm and a minimum outside diameter of 36 mm and a 1.5 mm wall thickness. The carbon fibre tube within the elliptical tube has an outer diameter of 32 mm and an inner diameter of 27 mm.
The shaft portion 13 remote from the hammer-head has its aluminium tube of maximum outer diameter of 48 mm and minimum outer diameter of 43 mm with a 1.5 mm carbon fibre wrap on the outside.
In an alternative embodiment, not illustrated, the relative location of the two tubes is governed by a cam mounted on the tube 13 and movable into and out of engagement with transverse grooved recesses in the tube 12. The cam may be moved by means of a lever similar to the lever 17 as illustrated. The cam is withdrawn from one groove in the tube 12 by moving the operating lever to one extreme position, the relative position of the tubes is then adjusted and then the operating lever is moved to its other extreme position to engage the cam with another groove in the tube 12 to lock the tubes 12, 13 in the new relative position. The grooved recess may have a depth less than the thickness of the wall of the tube 12, or it may extend completely through the wall to be limited by the carbon tube beneath.

Claims (10)

1. A tool comprising a tool head and a handle for wielding the head, the handle being formed of two portions of which a first portion can telescope within the second portion, the first portion being provided with a plurality of recesses spaced along its length and the second portion being provided with means for engaging a selected recess to locate the second portion in fixed axial position in relation to a selected one of the recesses.
2. A tool as claimed in claim 1 wherein said means is arranged releasably to engage a said recess.
3. A tool as claimed in claim 1 or claim 2 wherein said means is mounted on a sleeve secured to one end of the second portion, the sleeve extending beyond said one end of the second portion with a member for entering a selected one of the recesses.
4. A tool having a head intended to strike a workpiece in a given direction and an adjustable handle for wielding the head, the handle having one portion which can telescope within a second portion, said portions each being formed from elliptical-section tubes, the major axes of the ellipses being aligned with said given direction.
5. A tool as claimed in claim 4 wherein a said elliptical tube contains carbon fibres.
6. A tool as claimed in claim 4 or claim 5 comprising a carbon fibre tube located within the inner of the two tubes.
7. A tool as claimed in any one of claims 4 to 6 comprising carbon fibre wrapped on the outside of the outer of the two tubes.
8. A tool as claimed in any one of claims 1 to 7 comprising resilient means covering the region of the handle adjacent the tool head.
9. A tool as claimed in any one of claims 4 to 8, the first portion being provided with a plurality of recesses spaced along its length and the second portion being provided with means for engaging a selected recess to locate the second portion in fixed axial position in relation to a selected one of the recesses.
10. A tool substantially as herein described with reference to the accompanying drawings.
GB9723606A 1996-11-07 1997-11-07 Tool with telescopic handle Withdrawn GB2319742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GBGB9623129.5A GB9623129D0 (en) 1996-11-07 1996-11-07 Tool

Publications (2)

Publication Number Publication Date
GB9723606D0 GB9723606D0 (en) 1998-01-07
GB2319742A true GB2319742A (en) 1998-06-03

Family

ID=10802547

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9623129.5A Pending GB9623129D0 (en) 1996-11-07 1996-11-07 Tool
GB9723606A Withdrawn GB2319742A (en) 1996-11-07 1997-11-07 Tool with telescopic handle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9623129.5A Pending GB9623129D0 (en) 1996-11-07 1996-11-07 Tool

Country Status (1)

Country Link
GB (2) GB9623129D0 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806276A1 (en) * 2000-03-14 2001-09-21 Polmarg Support for stool used in food industry comprises two telescopic tubes, sliding tube being biased upwards by spring, lever mounted on fixed tube having lip which fits into notches on sliding tube to fix its position
GB2370802A (en) * 2001-01-05 2002-07-10 Ho Cheng Garden Tools Co Ltd Expandable tubular body, especially a handle
EP1388353A1 (en) * 2002-08-07 2004-02-11 Black Diamond Equipment AG Competition/leashless ice axe with adjustable grip
CN106193556A (en) * 2016-08-25 2016-12-07 无锡市东北塘永丰橡塑厂 The scalable rubber hammer that a kind of safety coefficient is high
GB2570718A (en) * 2018-02-06 2019-08-07 Tap N Check Ltd Vehicle inspection apparatus
US10375896B2 (en) 2016-04-21 2019-08-13 Black & Decker, Inc. Pole hedge trimmer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108838948B (en) * 2018-09-13 2020-05-05 无锡双龙艺术装潢有限公司 New-type laborsaving claw hammer of shock attenuation for building

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572896A (en) * 1976-03-08 1980-08-06 Reeves Saunders R Diagnostic tendon hammer
US4653142A (en) * 1984-09-19 1987-03-31 Reach High Products, Inc. Extensible tool handle
US4723582A (en) * 1985-07-26 1988-02-09 Vaughan & Bushnell Mfg. Co. Method of making an antislip wooden handle for a hand-held striking tool
US5099724A (en) * 1988-04-11 1992-03-31 Reddy Jr William L Striking device
US5220707A (en) * 1991-11-06 1993-06-22 Mr. Longarm, Inc. Tool reach extender with locking assembly
WO1994005465A1 (en) * 1992-08-28 1994-03-17 Vikan Børste Produktion A/S Handle for a cleaning utensil
WO1997033510A1 (en) * 1996-03-11 1997-09-18 Vorwek & Co. Interholding Gmbh Mutually telescopable components

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572896A (en) * 1976-03-08 1980-08-06 Reeves Saunders R Diagnostic tendon hammer
US4653142A (en) * 1984-09-19 1987-03-31 Reach High Products, Inc. Extensible tool handle
US4723582A (en) * 1985-07-26 1988-02-09 Vaughan & Bushnell Mfg. Co. Method of making an antislip wooden handle for a hand-held striking tool
US5099724A (en) * 1988-04-11 1992-03-31 Reddy Jr William L Striking device
US5220707A (en) * 1991-11-06 1993-06-22 Mr. Longarm, Inc. Tool reach extender with locking assembly
WO1994005465A1 (en) * 1992-08-28 1994-03-17 Vikan Børste Produktion A/S Handle for a cleaning utensil
WO1997033510A1 (en) * 1996-03-11 1997-09-18 Vorwek & Co. Interholding Gmbh Mutually telescopable components

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806276A1 (en) * 2000-03-14 2001-09-21 Polmarg Support for stool used in food industry comprises two telescopic tubes, sliding tube being biased upwards by spring, lever mounted on fixed tube having lip which fits into notches on sliding tube to fix its position
GB2370802A (en) * 2001-01-05 2002-07-10 Ho Cheng Garden Tools Co Ltd Expandable tubular body, especially a handle
GB2370802B (en) * 2001-01-05 2004-06-30 Ho Cheng Garden Tools Co Ltd A tree pruner having handles with expandable tubular bodies
EP1388353A1 (en) * 2002-08-07 2004-02-11 Black Diamond Equipment AG Competition/leashless ice axe with adjustable grip
US10375896B2 (en) 2016-04-21 2019-08-13 Black & Decker, Inc. Pole hedge trimmer
CN106193556A (en) * 2016-08-25 2016-12-07 无锡市东北塘永丰橡塑厂 The scalable rubber hammer that a kind of safety coefficient is high
CN106193556B (en) * 2016-08-25 2018-07-10 无锡市东北塘永丰橡塑厂 A kind of high scalable rubber hammer of safety coefficient
GB2570718A (en) * 2018-02-06 2019-08-07 Tap N Check Ltd Vehicle inspection apparatus

Also Published As

Publication number Publication date
GB9723606D0 (en) 1998-01-07
GB9623129D0 (en) 1997-01-08

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Legal Events

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