Striking head-interchangeable hammer with a stress-distributable fastener
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0844669
(2004-05-12)
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§371/§102 date |
20021112
(20021112)
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발명자
/ 주소 |
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대리인 / 주소 |
Quine Intellectual Property Law Group, P.C.
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인용정보 |
피인용 횟수 :
9 인용 특허 :
3 |
초록
▼
A striking head-interchangeable hammer includes a handle, a head body connected securely to the handle and formed with a through-hole and upper and lower bores, a striking body having a connecting portion that is received fittingly in the lower bore, and a stress-distributable fastener including a c
A striking head-interchangeable hammer includes a handle, a head body connected securely to the handle and formed with a through-hole and upper and lower bores, a striking body having a connecting portion that is received fittingly in the lower bore, and a stress-distributable fastener including a connecting rod that extends through the through-hole and the upper and lower bores in the head body to engage threadedly the striking body, and that is formed with an abutting flange received fittingly in the upper bore and anchored on and abutting against an abutting face of a bore-defining wall of the upper bore upon tightening of the connecting rod onto the striking body.
대표청구항
▼
1. A striking head-interchangeable hammer comprising:a handle;a head body connected securely to said handle, having opposite upper and lower ends, and formed with a through-hole that extends between said upper and lower ends, an upper bore that extends from said through-hole to said upper end of sai
1. A striking head-interchangeable hammer comprising:a handle;a head body connected securely to said handle, having opposite upper and lower ends, and formed with a through-hole that extends between said upper and lower ends, an upper bore that extends from said through-hole to said upper end of said head body, and a lower bore that is opposite to said upper bore and that extends from said through-hole to said lower end of said head body, said upper bore being defined by a bore-defining wall that defines a first abutting face transverse to the length of said through-hole;a first striking body mounted detachably on said lower end of said head body and having a striking portion and a connecting portion that extends from said striking portion, that is received fittingly in said lower bore in said head body, and that is formed with an inner thread; anda stress-distributable fastener including a connecting rod that extends fittingly through said through-hole and said upper and lower bores in said head body and that has a threaded lower end which engages threadedly said inner thread of said connecting portion of said first striking body, and an upper end which is opposite to said threaded lower end and which is formed with an abutting flange extending radially and outwardly therefrom, said abutting flange being received fittingly in said upper bore, and defining a second abutting face that is anchored on and that abuts against said first abutting face of said bore-defining wall of said upper bore upon tightening of said threaded lower end of said connecting rod onto said inner thread of said connecting portion of said first striking body so as to distribute stress, which results from a hammering operation, to said abutting flange, and so as to prevent concentration of the stress on said threaded lower end of said connecting rod and loosening of said first striking body from said head body.2. The striking head-interchangeable hammer of claim 1, further comprising a second striking body that is disposed opposite to said first striking body, and that is integrally formed with and that extends from said abutting flange of said stress-distributable fastener.3. The striking head-interchangeable hammer of claim 2, further comprising a third striking body that is mounted detachably on said handle, and that is interchangeable with said first striking body for mounting on said head body.4. The striking head-interchangeable hammer of claim 1, wherein said lower bore in said head body is defined by a bore-defining wall that defines a base face opposite to said first abutting face of said bore-defining wall of said upper bore, said head body being formed with a positioning pin that protrudes from said base face into said lower bore, said connecting portion of said first striking body being formed with a pin hole that receives fittingly said positioning pin therein.5. The striking head-interchangeable hammer of claim 1, wherein said handle includes a first tubular member that is connected securely to said head body, and a second tubular member that has a socket end extending into and connected securely and detachably to said first tubular member, said striking head-interchangeable hammer further comprising a screw-driving bit with a non-circular connecting end that is snugly fitted in said socket end of said second tubular member, and a driving end that is opposite to said connecting end and that extends into said first tubular member when said first and second tubular members are assembled together.6. The striking head-interchangeable hammer of claim 5, wherein said second tubular member defines an inner space therein, said striking head-interchangeable hammer further comprising an elongated bit-positioning member that is received in said second tubular member and that includes a central rod and a plurality of angularly displaced partitioning fins extending radially from said central rod so as to divide said inner space into a plurality of partitions that are adapted to receive tool bits, respectively.7. The striking head-interchangeable hammer of claim 1, wherein the upper bore has a larger diameter than the through hole and wherein the lower bore has a larger diameter than the through hole.
이 특허에 인용된 특허 (3)
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George R. Gerber, Jr., Multi-purpose hand tool with multiple interchangeable utility heads and safety lock.
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Cook William H. (Indianapolis IN), Non-rebound hammer.
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Schiller Barry (720 N. Flagler Ft. Lauderdale FL 33304), Tool holder assembly.
이 특허를 인용한 특허 (9)
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Liao, Ying-Chieh; Liao, Yu-Kuo, Hammer.
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Pell, William Lee, Hammer head.
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Lape, Brock M.; Evans, Jeffrey D., Lead connection and alignment tool.
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Miller, G. Ray; Fallen, III, Charles; Mouch, Robert C., Modular long handled tool component system.
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Mouch, Robert C.; Fallen, III, Charles; Miller, G. Ray, Modular long handled tool component system.
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Mouch, Robert C.; Fallen, III, Charles; Miller, G. Ray, Modular long handled tool component system.
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Chen, Chieh-Lung, Multifunctional hand tool.
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Boehm, Jean-Louis; Drevon, Arnaud, Multipurpose hitting device with a mechanism for absorbing the energy transmitted to the gripping means.
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Huang, Ping-Wen, Tool bit.
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