US3877826A - Handle connection for impact tools - Google Patents

Handle connection for impact tools Download PDF

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Publication number
US3877826A
US3877826A US340259A US34025973A US3877826A US 3877826 A US3877826 A US 3877826A US 340259 A US340259 A US 340259A US 34025973 A US34025973 A US 34025973A US 3877826 A US3877826 A US 3877826A
Authority
US
United States
Prior art keywords
eye
handle
head
section
impact tool
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.)
Expired - Lifetime
Application number
US340259A
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English (en)
Inventor
Jr Warren Arnold Shepherd
Joseph James Guarnaccia
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.)
Stanley Works
Original Assignee
Stanley Works
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 Stanley Works filed Critical Stanley Works
Priority to US340259A priority Critical patent/US3877826A/en
Priority to ZA740465A priority patent/ZA74465B/xx
Priority to FR7406717A priority patent/FR2221241B1/fr
Priority to DE19742408088 priority patent/DE2408088A1/de
Priority to GB818574A priority patent/GB1405871A/en
Priority to JP49027989A priority patent/JPS49125965A/ja
Priority to US05/545,732 priority patent/US3962399A/en
Application granted granted Critical
Publication of US3877826A publication Critical patent/US3877826A/en
Priority to JP1982063748U priority patent/JPS6024544Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25G3/00—Attaching handles to the implements
    • B25G3/34—Attaching handles to the implements by pressing the handle on the implements; using cement or molten metal, e.g. casting, moulding, by welding or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/28—Tools, e.g. cutlery
    • B29L2031/283—Hand tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/472—Molded joint including mechanical interlock

Definitions

  • An impact tool such as a hammer is provided with a metallic tool head having a handle-receiving eye in which a portion of the eye spaced from the entrance end increases in cross section toward the exit end and is also provided with a non-metallic handle having an end portion within the eye dimensioned to form a tight fit with the entrance end of the eye but having a clearance between it and the portion of the eye which increases in cross section, said end portion in addition having a peripheral indentation or recess in its outer surface, and a tough, hard and rigid molded plastic, preferably glass-filled, in the space between the end portion of the handle and the eye interlocking with the handle and having wedging engagement with the portion of the eye of increasing cross section thus effectively locking the parts against looseness and separation.
  • the present invention relates in general to impact tools such as hammers, axes, hatchets and similar hand tools and is concerned more particularly with an improved connection between the tool head and handle for overcoming the tendency in such tools under normal conditions of usage to develop looseness between and separation of the head and handle.
  • the invention is particularly advantageous for use in such tools where the handle is formed for non-metallic material such as wood or plastic.
  • Impact tools such as hammers have long been made with metallic heads and non-metallic handles, with the end of the handle inserted into and secured to a central opening or eye in the head.
  • the principal and traditional way of forming the connection between the head and end of the handle has been to provide the eye of the head with an outward flare or enlarged cross section toward its exit end and to expand the end of the handle which has been inserted through the smaller entrance end of the eye into tight contact throughout with the eye by wedging. This is accomplished by driving one or more wedges into the exposed end of the hammer forcing the end of the handle to expand or enlarge and bringing its periphery into compressive contact with the eye. While such connections are initially very tight, it is well known that they tend to deteriorate rapidly during normal usage of the tool.
  • Another object is to provide such a connection which can be made without difficulty using readily available materials and with consistent high quality whereby the use of the invention is economically attractive as well as producing improved results.
  • a further object is to provide such a handle connection which will not adversely affect the desired qualities of the tool such as balance and absorption of vibrations and will not deteriorate due to external or ambient conditions.
  • FIG. 1 is a fragmentary side view of a hammer, partially in cross section, showing a preferred embodiment of a handle connection formed in accordance with the invention
  • FIG. 2 is a fragmentary end view with a portion in section taken generally along the line 22 of FIG. 1;
  • FIG. 3 is a top view thereof but with the plastic omitted.
  • the invention is shown embodied in a hammer having a forged steel hammer head 10 of the claw type provided with the usual poll and bell II at one end and claws 12 at the other.
  • a handle receiving eye 13 Centrally of the head 10 is a handle receiving eye 13 which is a through opening having an entrance end 14 at the outer end of the boss 15 and an exit end 16 at the upper face of the head 10.
  • the cross section of the eye 13 is shown as generally rectangular although as will be apparent, the invention will apply equally to other cross-sectional configurations such as oval or round.
  • the function of the entrance region 17 is to form a tight frictional engagement with the end of the handle 18 when it is driven in from the entrance end 14, the handle end being dimensioned so that it will be slightly compressed at the entrance region and so that the entrance end 14 will dig slightly into the material of the handle when the handle end is fully inserted to form a tight seal.
  • the remaining region 19 of the eye 13 gradually increases in cross section toward the exit end 16. This is provided'in part, by a slight forward inclination of the front end surface and a slight rearward inclination of the rear end surface 21. While the amount ofinclination may vary in the practice of the invention, it may be mentioned by way of example that in the specific embodiment shown in the drawings, the dimension of the eye 13 from front end surface to rear end surface at the exit end exceeds that at the entrance end by the order of approximately one-quarter to three-sixteenth of an inch. In the specific embodiment the transverse dimension of the eye 13 also increases toward the exit end in that the side surfaces 22 and 23 are formed with a very minor outward flare toward the exit end 16.
  • the hammer head 10 and its eye configuration is very similar to that of a conventional hammer head construction as used when a nonmetallic handle is to be secured thereto by conventional wedging with the advantage that fabrication may be carried out without need for substantially changing existing equipment and manufacturing techniques presently used in the fabrication of impact tool heads previously manufactured.
  • the end portion of the handle 18 which in the specific embodiment is a wooden handle, is received in the eye 13 by insertion through the entrance end of the eye.
  • the end portion of the handle 18 inserted into the eye is modified in accordance with the invention to provide a head portion 24 of smaller cross section than the portion of the eye 13 adjacent the exit end 16 and having a clearance between it and the eye 13 around its entire periphery and throughout its length.
  • the sides of head portion 24 taper inwardly slightly toward the exit end for optimum clearance.
  • the shoulder portion 25, of the handle is dimensioned to provide a friction fit and to form a tight connection with the entrance region 17 of the eye 13.
  • a reduced section 26 Adjacent the shoulder portion 25 and between it and the head portion 24 is a reduced section 26 which in its preferred embodiment is formed by a circumferential groove which is relatively wide but shallow and formed with beveled edges.
  • a typical groove would be one having a width of the order of one-fourth inch and a depth of the order of one-eighth inch.
  • the head por tion 24 is shown as terminating slightly short of the exit end 16 of the eye, but this is not essential and the end of the handle may be formedflush with the exit end 16 if preferred.
  • the peripheral space around the end of the handle and between the handle and eye, and also the exit end of the eye 13 if the handle end does not extend for the full length of the eye is filled with a tough, hard and rigid plastic 27 of the type having high impact resistance and dimensional stability.
  • plastics having the necessary physical characteristics for this purpose for example, are polycarbonates such as sold under the trademark Merlon by Mobay Chemical Company and the trademark Lexan by General Electric Company, acetals such as the acetal homopolymers sold under the trademark Oebrin by E. l. duPont de Nemours & Company, Inc. and the acetal copolymers sold under the trademark Celcon by Celanese Corporation, and ABS resins (acrylonitrile, butadiene and styrene) as sold under the trademarks Kralastic,
  • these resins may have fibrous glass incorporated in them, usually in the range of 10 to 20 percent, which enhances stiffness, creep resistance and dimensional stability, and the use of such glass-filled.
  • resins such as a 20 percent glass reinforced ABS plastic, for example, is preferred. These plastics are generally classified in the trade as rigid molding materials and may have characteristics which in some respects such as creep resistance approach that of some nonferi tively high hS-fil distortion temperature, and minimum mold shrinkage.
  • noldable resins which may be utilized in accordance with the invention are, or may be rendered, flowable prior to setting, it is possible and preferable to fill the cavity between the handle end and eye by injecting the flowable plastic from the exit end 16 under high pressure using conventional injection molding equip ment.
  • the substantial spacing between the head portion 24 of the handle and the eye facilitates the injec-.'
  • the plastic mass 27 when solidified provides a unitary tough, hard and rigid connecting element forming a mechanical lock between the handle and the eye of the head.
  • the plastic mass in final molded form has an integral bead 28 which mechanically interlocks with the groove 26 and its upper portion increases in thickness and cross-section toward the exit end of the eye to form a wedge complementary to the wedging surfaces of the eye.
  • the result is an interference fit engaging in shear with the reduced section 26 of the end of the handle 18 and a wedging fit with the outwardly tapering surfaces of the eye 13 which cannot separate or loosen short of the destruction of the respective materials.
  • the tapered surfaces of the eye can be viewed as at least partially opposed to the upper edge of the groove 26 which are blocked apart by the hard plastic mass 27.
  • plastics specifically mentioned above as usable in the invention are primarily regarded as molding compositions which do not have adhesive characteristics, this lack of adhesive qualities is of no adverse consequence in the practice of the invention because the interconnection formed is mechanical in function and not dependent on adhesiveness. It will also. be
  • the plastic 27 is in contact with a large surface area of both the eye and handle end, and particularly the major portion located above the shoulder 25, it being an advantage of the present invention attributable in part to the physical characteristics of the resin used that it is unnecessary to have an extended surface-to-surface contact between the wood handle and metal eye as has usually been deemed necessary when forming the handle connections of the prior art.
  • Handle connections made in accordance with the present invention have exhibited a marked improvement with respect to durability and particularly with respect to resisting the onset of looseness and eventual separation of the head and handle.
  • a standard test which is significant in measuring the durability of a handle connection is to apply a transverse force to the handle relative to the head to simulate a nailpulling operation.
  • ordinary hammers in which the wooden handles were secured by conventional wedging techniques develope a looseness of the order of 0.054 inches measured three inches from the eye after only 150 cycles.
  • Samples of wooden-handled hammers made in accordance with the present invention on the other hand when tested in this manner remained intact and developed no appreciable looseness after 12,000 cycles at which point the tests were discontinued.
  • the plastic used has a wide range of service temperatures and has good chemical resistance and weatherability which ensures that the connection will not deteriorate due to environmental or ambient conditions, particularly when the plastic also covers over the end of the handle at the exit end of the eye as shown in the preferred embodiment.
  • An impact tool comprising a metallic head with a handle receiving eye therein having an entrance end and an exit end, said eye having a portion which progressively increases in cross-section toward the exit end, a handle having an end portion within the eye, said end portion having a shoulder portion forming a tight connection with the head over an area at the entrance end of the eye, a recessed circumferential groove adjacent said shoulder portion and spaced from the entrance end of the eye, and a wedge-free head portion spaced from the shoulder portion having a larger crosssection than the recessed portion but a smaller crosssection than the progressively increasing cross-section of the eye to provide a clearance therebetween which extends entirely around the periphery of said head portion and which progressively increases in cross-section toward the exit end of the eye, and a tough, hard and rigid injection molded thermoplastic material in the space within the eye between the end portion of the handle and the head, said thermoplastic material tightly engaging said wedge-free head portion and said recessed portion while'intimately contacting the progressively increasing eye portion to encapsulate
  • the impact tool of claim 1 wherein the molded plastic material comprises a resin of the type having a tensile strength of the order of 9,000 psi and a minimum compressive strength of the order of 12,000 psi.
  • the molded plastic material is a thermoplastic resin selected from the group consisting of polycarbonate, acetal and ABS resins, and glass fiber reinforced resins of said group.
  • the impact tool of claim 1 wherein said groove is a relatively wide circumferential groove and the molded plastic material is a thermoplastic resin selected from the group consisting of polycarbonate, acetal and ABS resins, and glass fiber reinforced resins of said group.
  • the enlarged cross-section portion of the eye is formed with front and rear surfaces which are inclined upwardly and outwardly toward the exit end of the eye and wherein the clearance between the head portion of the handle and the eye extends around the entire circumference of the head portion, and wherein the molded plastic forms a hard and rigid unitary mass mechanically engaging with the recessed portion of the handle and having a wedging fit with the front and rear surfaces of the enlarged cross-section portion of the eye.
  • the molded plastic material is a thermoplastic resin selected from the group consisting of polycarbonate, acetal and ABS resins, and glass fiber reinforced resins of said group.
  • the molded plastic material is a thermoplastic resin selected from the group consisting of polycarbonate, acetal and ABS resins, and glass fiber reinforced resins of said group.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
US340259A 1973-03-12 1973-03-12 Handle connection for impact tools Expired - Lifetime US3877826A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US340259A US3877826A (en) 1973-03-12 1973-03-12 Handle connection for impact tools
ZA740465A ZA74465B (en) 1973-03-12 1974-01-22 Handle connection for impact tool
DE19742408088 DE2408088A1 (de) 1973-03-12 1974-02-20 Schlagwerkzeug
FR7406717A FR2221241B1 (enrdf_load_stackoverflow) 1973-03-12 1974-02-20
GB818574A GB1405871A (en) 1973-03-12 1974-02-22 Handle connection for impact tools
JP49027989A JPS49125965A (enrdf_load_stackoverflow) 1973-03-12 1974-03-11
US05/545,732 US3962399A (en) 1973-03-12 1975-01-30 Method of forming a handle connection for impact tools
JP1982063748U JPS6024544Y2 (ja) 1973-03-12 1982-04-30 衝撃工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US340259A US3877826A (en) 1973-03-12 1973-03-12 Handle connection for impact tools

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/545,732 Continuation-In-Part US3962399A (en) 1973-03-12 1975-01-30 Method of forming a handle connection for impact tools

Publications (1)

Publication Number Publication Date
US3877826A true US3877826A (en) 1975-04-15

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Application Number Title Priority Date Filing Date
US340259A Expired - Lifetime US3877826A (en) 1973-03-12 1973-03-12 Handle connection for impact tools

Country Status (6)

Country Link
US (1) US3877826A (enrdf_load_stackoverflow)
JP (2) JPS49125965A (enrdf_load_stackoverflow)
DE (1) DE2408088A1 (enrdf_load_stackoverflow)
FR (1) FR2221241B1 (enrdf_load_stackoverflow)
GB (1) GB1405871A (enrdf_load_stackoverflow)
ZA (1) ZA74465B (enrdf_load_stackoverflow)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172678A (en) * 1977-03-24 1979-10-30 Siemens Aktiengsellschaft Fastening a rotor on a shaft
US4287640A (en) * 1979-08-17 1981-09-08 Ixl Manufacturing Co., Inc. Tool handle and method of making same
US4344901A (en) * 1979-08-17 1982-08-17 Ixl Manufacturing Co., Inc. Method of making tool handle
US4352381A (en) * 1980-08-25 1982-10-05 Dasco Products, Inc. Tool head and handle interconnection
US4404708A (en) * 1978-08-07 1983-09-20 Modern Inventions (Proprietary) Limited Handle
US4418732A (en) * 1980-09-24 1983-12-06 Kolonia Robert A Hand tool and a core reinforced molded synthetic material handle therefor
US5031272A (en) * 1990-02-28 1991-07-16 Carmien Joseph A Tool handle and method of attaching a handle to a percussive tool head
US5056381A (en) * 1990-02-28 1991-10-15 Carmein Joseph A Replacement tool handle, hand tool and method
US5259274A (en) * 1992-07-28 1993-11-09 The Stanley Works Hand tool with internally reinforced jacketed handle
USD378344S (en) * 1994-05-04 1997-03-11 Kroenung Tracy M Set of hammer parts
US5651631A (en) * 1996-07-10 1997-07-29 Carmien; Joseph Allen Method and apparatus for attaching a tool handle to a tool head
US5896788A (en) * 1997-10-09 1999-04-27 The Stanley Works Hammer with improved handle interlock and method of making same
US5996442A (en) * 1997-08-05 1999-12-07 Carmien; Joseph Allen Hand tool having interchangeable and replaceable striking heads, and assembly process
US6220120B1 (en) * 1999-08-10 2001-04-24 Jason D. Check Ergonomic tool
US6227075B1 (en) 1999-01-25 2001-05-08 Joseph Allen Carmien Nonrecoil hammer
US20050252345A1 (en) * 2004-05-11 2005-11-17 Carmien Joseph A Non-recoil striking tool and process for making same
US20060048608A1 (en) * 2003-01-21 2006-03-09 Santa Ana Roland C Side-load nail holding hammer
WO2007000124A1 (de) * 2005-06-27 2007-01-04 Erwin Halder Kg Rückschlagfreier hammer
US20070144016A1 (en) * 2003-02-18 2007-06-28 Shusen Luo Firmly assembled axe or hammer
US20080053278A1 (en) * 2006-08-30 2008-03-06 The Stanley Works Torsion control hammer grip
US20100139458A1 (en) * 2008-12-09 2010-06-10 Ames True Temper, Inc. Coupling for handle and tool head
US9233462B2 (en) 2013-10-21 2016-01-12 Milwaukee Electric Tool Corporation Hammer
US20160008966A1 (en) * 2014-07-14 2016-01-14 Fiskars Brands, Inc. Vibration reduction mechanism for a striking tool
US10213932B2 (en) 2011-03-24 2019-02-26 Husqvarna Ab Handle protector for a hand tool
USD867091S1 (en) 2013-01-06 2019-11-19 Lowe's Companies, Inc. Hammer
US20210291349A1 (en) * 2019-10-15 2021-09-23 Victorio Gutierrez Hand tool with replaceable tool head
US20230043777A1 (en) * 2021-08-06 2023-02-09 Shu-Yi Lo Pin fixing type hand tool structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144069A (en) * 1983-06-10 1985-02-27 Supersafe Fibreglass Tool Hand Hand tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067751A (en) * 1935-03-02 1937-01-12 Raymond E Beegle Securing means for tool handles
US2656225A (en) * 1949-11-16 1953-10-20 Everett G Rodebaugh Hand tool
US2678853A (en) * 1952-03-20 1954-05-18 Reeder Ray Securing means for hammers
US2850331A (en) * 1954-09-13 1958-09-02 Fayette R Plumb Inc Handle connection for percussive tool
US2967738A (en) * 1958-04-09 1961-01-10 Moore Robert Edwin Tool handle fastening
US3128131A (en) * 1961-11-02 1964-04-07 Andrew F Bianchini Hammer handle anchoring means
US3175232A (en) * 1962-05-16 1965-03-30 Stanley Works Percussive tool having improved handle fastening means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1478729A (fr) * 1966-04-25 1967-04-28 Anciens Etablissements Goldenb Nouveau mode d'emmanchement des outils tels que marteaux, haches, masses et analogues
JPS4520000Y1 (enrdf_load_stackoverflow) * 1966-12-20 1970-08-12

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067751A (en) * 1935-03-02 1937-01-12 Raymond E Beegle Securing means for tool handles
US2656225A (en) * 1949-11-16 1953-10-20 Everett G Rodebaugh Hand tool
US2678853A (en) * 1952-03-20 1954-05-18 Reeder Ray Securing means for hammers
US2850331A (en) * 1954-09-13 1958-09-02 Fayette R Plumb Inc Handle connection for percussive tool
US2967738A (en) * 1958-04-09 1961-01-10 Moore Robert Edwin Tool handle fastening
US3128131A (en) * 1961-11-02 1964-04-07 Andrew F Bianchini Hammer handle anchoring means
US3175232A (en) * 1962-05-16 1965-03-30 Stanley Works Percussive tool having improved handle fastening means

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172678A (en) * 1977-03-24 1979-10-30 Siemens Aktiengsellschaft Fastening a rotor on a shaft
US4404708A (en) * 1978-08-07 1983-09-20 Modern Inventions (Proprietary) Limited Handle
US4287640A (en) * 1979-08-17 1981-09-08 Ixl Manufacturing Co., Inc. Tool handle and method of making same
US4344901A (en) * 1979-08-17 1982-08-17 Ixl Manufacturing Co., Inc. Method of making tool handle
US4352381A (en) * 1980-08-25 1982-10-05 Dasco Products, Inc. Tool head and handle interconnection
US4418732A (en) * 1980-09-24 1983-12-06 Kolonia Robert A Hand tool and a core reinforced molded synthetic material handle therefor
US5031272A (en) * 1990-02-28 1991-07-16 Carmien Joseph A Tool handle and method of attaching a handle to a percussive tool head
US5056381A (en) * 1990-02-28 1991-10-15 Carmein Joseph A Replacement tool handle, hand tool and method
US5259274A (en) * 1992-07-28 1993-11-09 The Stanley Works Hand tool with internally reinforced jacketed handle
USD378344S (en) * 1994-05-04 1997-03-11 Kroenung Tracy M Set of hammer parts
US5651631A (en) * 1996-07-10 1997-07-29 Carmien; Joseph Allen Method and apparatus for attaching a tool handle to a tool head
US5996442A (en) * 1997-08-05 1999-12-07 Carmien; Joseph Allen Hand tool having interchangeable and replaceable striking heads, and assembly process
US5896788A (en) * 1997-10-09 1999-04-27 The Stanley Works Hammer with improved handle interlock and method of making same
US6227075B1 (en) 1999-01-25 2001-05-08 Joseph Allen Carmien Nonrecoil hammer
US6234048B1 (en) 1999-01-25 2001-05-22 Joseph Allen Carmien Nonrecoil hammer
US6220120B1 (en) * 1999-08-10 2001-04-24 Jason D. Check Ergonomic tool
US8109178B2 (en) * 2003-01-21 2012-02-07 Santa Ana Roland C Side-load nail holding hammer
US20060048608A1 (en) * 2003-01-21 2006-03-09 Santa Ana Roland C Side-load nail holding hammer
US20070144016A1 (en) * 2003-02-18 2007-06-28 Shusen Luo Firmly assembled axe or hammer
US20050252345A1 (en) * 2004-05-11 2005-11-17 Carmien Joseph A Non-recoil striking tool and process for making same
WO2007000124A1 (de) * 2005-06-27 2007-01-04 Erwin Halder Kg Rückschlagfreier hammer
US20090078090A1 (en) * 2005-06-27 2009-03-26 Stefan Halder Recoilles Hammer
US7703355B2 (en) 2005-06-27 2010-04-27 Erwin Halder Kg Recoilless hammer
US8499665B2 (en) 2006-08-30 2013-08-06 Stanley Black & Decker, Inc. Torsion control hammer grip
US20080053278A1 (en) * 2006-08-30 2008-03-06 The Stanley Works Torsion control hammer grip
US20100139458A1 (en) * 2008-12-09 2010-06-10 Ames True Temper, Inc. Coupling for handle and tool head
US10213932B2 (en) 2011-03-24 2019-02-26 Husqvarna Ab Handle protector for a hand tool
USD867091S1 (en) 2013-01-06 2019-11-19 Lowe's Companies, Inc. Hammer
US9233462B2 (en) 2013-10-21 2016-01-12 Milwaukee Electric Tool Corporation Hammer
US20160008966A1 (en) * 2014-07-14 2016-01-14 Fiskars Brands, Inc. Vibration reduction mechanism for a striking tool
US11485002B2 (en) * 2014-07-14 2022-11-01 Fiskars Brands, Inc. Vibration reduction mechanism for a striking tool
US20210291349A1 (en) * 2019-10-15 2021-09-23 Victorio Gutierrez Hand tool with replaceable tool head
US20230043777A1 (en) * 2021-08-06 2023-02-09 Shu-Yi Lo Pin fixing type hand tool structure

Also Published As

Publication number Publication date
DE2408088A1 (de) 1974-09-26
JPS49125965A (enrdf_load_stackoverflow) 1974-12-03
GB1405871A (en) 1975-09-10
ZA74465B (en) 1974-12-24
JPS6024544Y2 (ja) 1985-07-22
FR2221241B1 (enrdf_load_stackoverflow) 1978-03-24
JPS57202678U (enrdf_load_stackoverflow) 1982-12-23
FR2221241A1 (enrdf_load_stackoverflow) 1974-10-11

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