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GB2383771A - Percussive Hand Tools - Google Patents

Percussive Hand Tools Download PDF

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Publication number
GB2383771A
GB2383771A GB0200123A GB0200123A GB2383771A GB 2383771 A GB2383771 A GB 2383771A GB 0200123 A GB0200123 A GB 0200123A GB 0200123 A GB0200123 A GB 0200123A GB 2383771 A GB2383771 A GB 2383771A
Authority
GB
United Kingdom
Prior art keywords
slot
hand tool
shaft
percussive hand
percussive
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Withdrawn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
GB0200123A
Other versions
GB0200123D0 (en
Inventor
Keith England
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 GB0200123A priority Critical patent/GB2383771A/en
Publication of GB0200123D0 publication Critical patent/GB0200123D0/en
Publication of GB2383771A publication Critical patent/GB2383771A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/01—Shock-absorbing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A percussive hand tool comprising a hammer head or a conventional tool blade secured to a shaft which has a slot along its neutral axis to increase resilience. The slot may be filled with a resilient material. The striking face of the hammer is elongated to the rear over a portion of its circumference so that the hammer may strike nearer the Centre of Percussion to increase the power of the blow.

Description

<Desc/Clms Page number 1>
Percussive Hand Tools This invention relates to bammers sledgehammers, axes and mattocks an
nther percussive hpnd tools.'Their use results in shock on the hands dz which is undesirable as it cuises fatigue and repetitive strain injury 'cOT'dLng to the present invention there is provided a hand tool hose striking face is rearvard elongated or a conventional blade, to which is secured a shaft percussion. The shaft has a slot on the neutral axis Hand hammers are used in a large variety. ru general they have a shaft about which up to 2 lb. and have a round st striking face of radius u-o to five eighths of an inch.
Hand hammers in accordance with this inventicn -ill include a rearward extension unicuely 12 " long will werigh three quarters of an inch pnd i.'ill imclude a slot on the neutral axis
A specific embodiment cf the invention -'ill no be ds & cribed vdth referenne to the"ccomrPnvin ? dra'ings... in which...
L i ? 1 sho. ? ? -ont vie of p hnd h,? mmer ith a repr.'prd elon ?pted f ? ce fnd P Flot or slots on the neutral pxis of the sh. ? ft.
Fig 2 shows h-irmer'ith n elongpted'ace nd spinp's in thé chnft to give the necessary rigidity pnd resilience.
? ig 3 shoe's 3n axe nith a slot on the neutral exis of the shaft. t In fig 1 the strking face of the hammer 1 has been elongated rearwards A to be more tl-an three cuarters of an inch and may normally include the centre of o: more than 2 has its resilience increased by slot on the neutral axis. The slot may be a single slot or a series of shorter slots or a group of narrower slots which slots may extend to any depth. The slot may be filled with a light resilient material to lorm a smooth exterior. Alternatively the shaft in fig 2 may comprise a core of resilient materiel reinforced on its edges or faces by sa stronger material such as hard plastic or carbon fibre to provide sufficient rigidity in use
ig 2 shows a burner where the rigidity is provided by sprintas fig 7 shows n fxe incluring 8 slot on the neutral xis 'hich m ? y be filled with p resilient mpteril

Claims (5)

  1. CLAIMS 1. A percussive hand tool comprising a conventional blade or a head a portion of whose striking surface is elongated to the rear, to which is secured a shaft which has a slot on the neutral axis.
  2. 2. A percussive hand tool as claimed in claim 1 in which the dimension from the centre of the striking face to the perimeter has been elongated to exceed three quarters of an inch.
  3. 3. A percussive hand tool as claimed in claim 1 in which the shaft has a slot substantially on its neutral axis which may be filled with a resilient material.
  4. 4. A percussive hand tool as claimed in claim 1 in which the shaft has a centre of resilient material with the exterior of stronger material or a reinforcing material.
  5. 5. A percussive hand tool as claimed in claim 1 substantially as described with reference to the accompanying drawings.
GB0200123A 2002-01-04 2002-01-04 Percussive Hand Tools Withdrawn GB2383771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0200123A GB2383771A (en) 2002-01-04 2002-01-04 Percussive Hand Tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0200123A GB2383771A (en) 2002-01-04 2002-01-04 Percussive Hand Tools

Publications (2)

Publication Number Publication Date
GB0200123D0 GB0200123D0 (en) 2002-02-20
GB2383771A true GB2383771A (en) 2003-07-09

Family

ID=9928611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0200123A Withdrawn GB2383771A (en) 2002-01-04 2002-01-04 Percussive Hand Tools

Country Status (1)

Country Link
GB (1) GB2383771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105082072A (en) * 2014-05-16 2015-11-25 张秀华 Shock absorption type nail hammer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113211386A (en) * 2020-01-21 2021-08-06 中航天建设工程集团有限公司 Special hammer for anchoring nail

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331193A (en) * 1980-06-09 1982-05-25 White Development Corporation Flexible handle for percussive tool employing improved shaft member
US5860334A (en) * 1996-03-28 1999-01-19 Coonrad; Todd Douglas Striking tool
GB2327634A (en) * 1997-07-24 1999-02-03 John Chen A hand tool handle with a shock absorbing airbag
DE19937951A1 (en) * 1998-08-27 2000-03-09 Estwing Manufacturing Company Combination tool for roofers, carpenters, and bricklayers has no moveable parts and is of same weight as conventional hammers
US6088862A (en) * 1998-05-06 2000-07-18 Bulcock; Bruce Jefferson Hammer with accessories
US6170362B1 (en) * 1999-07-08 2001-01-09 John Chen Shock-proof structure of the handle cover of a hand tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331193A (en) * 1980-06-09 1982-05-25 White Development Corporation Flexible handle for percussive tool employing improved shaft member
US5860334A (en) * 1996-03-28 1999-01-19 Coonrad; Todd Douglas Striking tool
GB2327634A (en) * 1997-07-24 1999-02-03 John Chen A hand tool handle with a shock absorbing airbag
US6088862A (en) * 1998-05-06 2000-07-18 Bulcock; Bruce Jefferson Hammer with accessories
DE19937951A1 (en) * 1998-08-27 2000-03-09 Estwing Manufacturing Company Combination tool for roofers, carpenters, and bricklayers has no moveable parts and is of same weight as conventional hammers
US6170362B1 (en) * 1999-07-08 2001-01-09 John Chen Shock-proof structure of the handle cover of a hand tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105082072A (en) * 2014-05-16 2015-11-25 张秀华 Shock absorption type nail hammer
CN105082072B (en) * 2014-05-16 2017-04-12 张秀华 Shock absorption type nail hammer

Also Published As

Publication number Publication date
GB0200123D0 (en) 2002-02-20

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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)