IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0125904
(1700-01-01)
|
우선권정보 |
ES-199602752 (1996-12-27); ES-199702667 (1997-12-22) |
국제출원번호 |
PCT/ES97/00314
(1997-12-26)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Iberia Ashland Chemical, S.A.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
4 |
초록
▼
The molding sand comprises hollow microspheres of aluminum silicate, preferably with an aluminum content between 15 and 45% by weight, a wall thickness between 3 and 10% of the particle diameter and a particle size between 10 and 350 μm. These sands are useful to manufacture low density cores with g
The molding sand comprises hollow microspheres of aluminum silicate, preferably with an aluminum content between 15 and 45% by weight, a wall thickness between 3 and 10% of the particle diameter and a particle size between 10 and 350 μm. These sands are useful to manufacture low density cores with good "veining" and penetration characteristics, moreover maintaining the mechanical properties of the core obtained. These cores are useful in the manufacture of iron casting.
대표청구항
▼
The molding sand comprises hollow microspheres of aluminum silicate, preferably with an aluminum content between 15 and 45% by weight, a wall thickness between 3 and 10% of the particle diameter and a particle size between 10 and 350 μm. These sands are useful to manufacture low density cores with g
The molding sand comprises hollow microspheres of aluminum silicate, preferably with an aluminum content between 15 and 45% by weight, a wall thickness between 3 and 10% of the particle diameter and a particle size between 10 and 350 μm. These sands are useful to manufacture low density cores with good "veining" and penetration characteristics, moreover maintaining the mechanical properties of the core obtained. These cores are useful in the manufacture of iron casting. ast one carcass reinforcement in the sidewall, is firstly radially distant from the axis of rotation by an amount equal to the radius of the circle which is the geometric locus of the points of the rim flange which are farthest from said axis, and secondly axially distant from the equatorial plane by an amount of between the rim width increased by 10% of said width and the rim width decreased by 10% of said width, the center of curvature of said arc AB, relative to the two axes which are the trace of the equatorial plane and the axis of rotation, having the same coordinates as the center of curvature of the rim hook. 6. A tire according to claim 4, characterized in that the length of said first arc of a circle AB of the at least one carcass reinforcement profile lies between a zero value, the meridian profile of the at least one carcass reinforcement in the bead beginning directly with the second, convex, arc of a circle BC, and a value at most equal to the length of an arc of a circle the radially lower end B of which is the point of tangency of said arc with a line perpendicular to the axis of rotation. 7. A tire according to one of claims 4 to 6, characterized in that the second arc of a circle BC, which is at a tangent at B to the first arc of a circle AB, has a radius of curvature of between a minimum value of 5 mm and a maximum value equal to the radius of curvature of the meridian profile of the at least one carcass reinforcement in the sidewall measured at the point of tangency A between said profile and the first arc of a circle AB, said maximum value being the value of radius used when the first arc of a circle AB has a length of zero. 8. A tire according to one of claims 4 to 6, characterized in that the axially inner edge of the meridian profile of the at least one carcass reinforcement, composed either of part of the second arc of a circle BC to which the straight line segment CD is added, or of part of the second arc of a circle BC, is the part of the meridian profile located in an angle defined by a half line forming a tangent at S to the second arc of a circle BC and forming with the axis of rotation an angle of 25° and a half line parallel to said axis of rotation, the origin S of which is precisely the point of tangency of the second arc of a circle BC with the half line oriented at 25°. 9. A tire according to claim 1, characterized in that the meridian profile of the at least one carcass reinforcement in a bead is formed, radially and axially towards the inside, by an optional first, concave, arc of a circle AB, extended tangentially at B By a second, convex, arc of a circle BC, said second arc of a circle BC being extended tangentially by an optional straight line segment CD, D being the end of the at least one carcass reinforcement in the bead, the axially inner edge of the meridian profile of the at least one carcass reinforcement, composed either of part of the second arc of a circle BC to which the straight line segment CD is added, or of part of the second arc of a circle BC, is the part of the meridian profile located in an angle defined by a half line forming a tangent at S to the second arc of a circle BC and forming with the axis of rotation an angle of 25° and a half line parallel to said axis of rotation, the origin S of which is precisely the point of tangency of the second arc of a circle BC with the half line oriented at 25°, and the at least one first additional ply, between its axially inner end and the vertex S of the angle in which the axially inner edge of the at least one carcass reinforcement is located, is separated from the at least one second additional by a minimal thickness of rubber mix, which thickness is the total thicknesses of the calendering layers facing the two adjacent first and second plies respectively, whereas between said vertex S and the radially upper end of the at least one first additional ply the separating thickness is between 1.00 and 1.80 times the abo
※ AI-Helper는 부적절한 답변을 할 수 있습니다.