EP0551549A1 - Handgriff mit Kopfschutz für ein Handgerät - Google Patents

Handgriff mit Kopfschutz für ein Handgerät Download PDF

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Publication number
EP0551549A1
EP0551549A1 EP92100736A EP92100736A EP0551549A1 EP 0551549 A1 EP0551549 A1 EP 0551549A1 EP 92100736 A EP92100736 A EP 92100736A EP 92100736 A EP92100736 A EP 92100736A EP 0551549 A1 EP0551549 A1 EP 0551549A1
Authority
EP
European Patent Office
Prior art keywords
handle
head
wooden body
handle according
wood
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Withdrawn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
EP92100736A
Other languages
English (en)
French (fr)
Inventor
Bernard Prouteau
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.)
SICFO Stanley SA
Original Assignee
SICFO Stanley SA
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 SICFO Stanley SA filed Critical SICFO Stanley SA
Priority to EP92100736A priority Critical patent/EP0551549A1/de
Publication of EP0551549A1 publication Critical patent/EP0551549A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D3/00—Hand chisels

Definitions

  • the present invention relates to an improvement in the handle for a hand tool, in particular wood chisels, gouges or chisels of the type comprising a wooden body and a protective head mounted on and in extension of the body.
  • wood chisels, gouges and chisels are composed of a hardened steel blade with a sharp part at one end. At the other end, this blade has a recessed part called "silk" intended to receive a handle generally made of hard wood or plastic.
  • These tools are used by hitting the end of the handle with a mallet or with the palm of your hand.
  • the plastic handles offer good impact resistance but are often slippery and less pleasant to touch than wood.
  • Wood has the disadvantage of splitting and flourishing under the repeated impact of the mallet, which makes use with the palm of the hand unpleasant and sometimes dangerous, due to the risk of splinters in the hand.
  • the object of the improvement according to the invention is to overcome these drawbacks and to propose a protective head with perfect attachment to the wooden body whatever the influence of the atmosphere. This object is achieved with a handle for a hand tool as described in claim 1.
  • FIG. 1 a wood chisel, (1) composed of a hardened steel blade, (2) having a sharp part. At the other end, this blade has a recessed part called “silk” intended to receive a handle (3).
  • This handle consists of a wooden body (4) and a head (5) mounted on and in the extension of the wooden body. As already explained above, this head prevents the wood from splitting and flourishing under the repeated impacts of a mallet.
  • Figure 2 shows the protective head, and therefore the end of the wooden body on which the head is mounted, in section along the central axis X-X of the tool.
  • the head has a central cylindrical part 7, fitted into a bore 6 drilled in the wooden body 4 to the corresponding dimensions.
  • This cylindrical part 7 is forced into this bore 6.
  • the generator of the cylindrical body is provided with grooves 8.
  • the fixing by means of this cylindrical part of the head 5 is all the more tight as the wood shrinks, for example by drying.
  • the material of the protective head 5 is a plastic of the polypropylene more elastomer type having great dimensional stability under the effect of hygrometric or thermal variations.
  • the wood of the body 4 absorbs moisture, which leads to considerable expansion in all dimensions, particularly perpendicular to the orientation of the wood fibers, and causes an enlargement of the bore 6 with the risk of formation of a play or a less tight impact between the cylindrical part 7 of the protective head 5 and the wooden body 4.
  • the protective head is provided, at its periphery, with a skirt 9 covering part of the end of the body in wood.
  • the outer surface of this skirt 9 merges with the extension of the surface of the wooden body.
  • the inner surface of said skirt 9 is in contact with a cylindrical seat 10 of the same diameter formed by a bearing surface 11 in the end of the wooden body 4. Since the material of the protective head 5 does not not expands under the effect of hygrometric variations, an expansion of the wood increases the clamping force at the level of the interior surface of said skirt 9 and of its seat 10 at the end of the wooden body 4.
  • handle shapes 3 other than symmetrical in rotation about the central axis X-X of the tool, such as for example oval, rectangular or hexagonal shapes with rounded corners.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
EP92100736A 1992-01-17 1992-01-17 Handgriff mit Kopfschutz für ein Handgerät Withdrawn EP0551549A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92100736A EP0551549A1 (de) 1992-01-17 1992-01-17 Handgriff mit Kopfschutz für ein Handgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92100736A EP0551549A1 (de) 1992-01-17 1992-01-17 Handgriff mit Kopfschutz für ein Handgerät

Publications (1)

Publication Number Publication Date
EP0551549A1 true EP0551549A1 (de) 1993-07-21

Family

ID=8209252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92100736A Withdrawn EP0551549A1 (de) 1992-01-17 1992-01-17 Handgriff mit Kopfschutz für ein Handgerät

Country Status (1)

Country Link
EP (1) EP0551549A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT5358B (lt) 2004-11-08 2006-08-25 Vilniaus Gedimino technikos universitetas Modifikuotas kaltas-skeltuvas
EP1932628A1 (de) * 2006-12-13 2008-06-18 Ing. Johann HÖRTNAGL-WERKZEUGE Ges.m.b.H Kelle mit Holz-Kunststoffgriff
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD922842S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922841S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD923447S1 (en) 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191323000A (en) * 1913-10-11 1914-01-15 Donald Mcneil Improvements in and relating to Chisels and like Cutting Tools.
US1604007A (en) * 1926-03-10 1926-10-19 Wigren Frank Jones Tool
US2475041A (en) * 1946-02-25 1949-07-05 Joseph M Mattson Percussive type wood chisel
DE3217788A1 (de) * 1982-05-12 1983-11-24 Felo Holland-Letz GmbH & Co KG, 3577 Neustadt Schlagkappe
US4535649A (en) * 1983-01-28 1985-08-20 Drag Specialties, Inc. Anti-slip handlebar grip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191323000A (en) * 1913-10-11 1914-01-15 Donald Mcneil Improvements in and relating to Chisels and like Cutting Tools.
US1604007A (en) * 1926-03-10 1926-10-19 Wigren Frank Jones Tool
US2475041A (en) * 1946-02-25 1949-07-05 Joseph M Mattson Percussive type wood chisel
DE3217788A1 (de) * 1982-05-12 1983-11-24 Felo Holland-Letz GmbH & Co KG, 3577 Neustadt Schlagkappe
US4535649A (en) * 1983-01-28 1985-08-20 Drag Specialties, Inc. Anti-slip handlebar grip

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT5358B (lt) 2004-11-08 2006-08-25 Vilniaus Gedimino technikos universitetas Modifikuotas kaltas-skeltuvas
EP1932628A1 (de) * 2006-12-13 2008-06-18 Ing. Johann HÖRTNAGL-WERKZEUGE Ges.m.b.H Kelle mit Holz-Kunststoffgriff
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD922842S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922841S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD923447S1 (en) 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel
USD937650S1 (en) 2019-05-06 2021-12-07 Milwaukee Electric Tool Corporation Chisel
USD938249S1 (en) 2019-05-06 2021-12-14 Milwaukee Electric Tool Corporation Chisel
USD941113S1 (en) 2019-05-06 2022-01-18 Milwaukee Electric Tool Corporation Chisel

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