IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0244782
(1981-03-17)
|
우선권정보 |
AR-0280707 (1980-04-16) |
발명자
/ 주소 |
- Soto Eduardo R. R. (Rosario ARX)
|
출원인 / 주소 |
- Tecnologia Argentina S.A. (Rosario ARX 03)
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
▼
To provide for effective force transfer upon striking of blows between plastic end portions covering a metal, typically steel, core without damage to the plastic striking end portions (201, 202), the plastic end portions (201, 202) form part of a single unitary plastic element (200) covering the met
To provide for effective force transfer upon striking of blows between plastic end portions covering a metal, typically steel, core without damage to the plastic striking end portions (201, 202), the plastic end portions (201, 202) form part of a single unitary plastic element (200) covering the metal core (100) which, generally, is of ellipsoid shape. The metal core has flat end portions (102, 103), with positioning protrusions (104, 105) extending into matching recesses formed in the striking portions (201, 202) of the plastic covering. The various surfaces of the metal core (102, 103; 106; 107, 108; 109) are joined by inclined surfaces which may be flat or curved and form part of the generally ellipsoid surfaces (110, 111, 112) whereby, upon striking of blows, fissures and breakage of the striking portions are avoided.
대표청구항
▼
Malet or hammer having a metal core (100) having two end surfaces (102, 103), and a bottom surface (109); an opening (M, M′) formed in the core and extending through the bottom surface to receive a handle (L); and striking portions (201, 202) of elastomer material secured to the metal core, wherein,
Malet or hammer having a metal core (100) having two end surfaces (102, 103), and a bottom surface (109); an opening (M, M′) formed in the core and extending through the bottom surface to receive a handle (L); and striking portions (201, 202) of elastomer material secured to the metal core, wherein, in accordance with the invention, the metal core (100) has generally ellipsoid shape; the end surfaces (102, 103) are parallel planes having a surface area which is between 50% to 70% of the area of the core at a central section thereof; an essentially plane top surface (106) extending transversely to the end surfaces; essentially plane side surfaces (107, 108) extending laterally of a plane of symmetry through the handle opening (M, M′); a first inclined surfaces (110) connecting said end surfaces (102, 103) with said plane top surface (106); second inclined surfaces (112) connecting the end surfaces (102, 103) and the bottom surface (109); third inclined surfaces (111) connecting said end surfaces (102, 103) and said side surfaces (107, 108); a projection (104, 105) extending at right angles from each of the plane end surfaces (102, 103), said projections having rounded end portions; and wherein a unitary plastic cover element (200) is provided having said striking portions (201, 202) formed thereon at terminal ends of said element, said plastic cover element being formed with internal surfaces which match and fit said end surfaces (102, 103), said top surface (106), said side surfaces (107, 108) and said first, second and third inclined surfaces (110, 111, 112), the striking portions (201, 203) being formed with recesses to accept said projections (104, 105); and wherein the area of the cover element, in transverse section, increases by at least 30% from the end surfaces of the striking portions to the central section, and the wall portions of the cover element adjacent said top surface and said side surfaces are of essentially uniform thickness.
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