IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0297188
(2007-04-12)
|
등록번호 |
US-8166994
(2012-05-01)
|
우선권정보 |
IT-MI2006A0740 (2006-04-13) |
국제출원번호 |
PCT/EP2007/003252
(2007-04-12)
|
§371/§102 date |
20081014
(20081014)
|
국제공개번호 |
WO2007/118666
(2007-10-25)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Vir Valvoindustria Ing. Rizzio—S.p.A.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A ball (1) for valves is described, comprising a substantially ball-shaped body (2), a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, and a slot (10) cut into the body (2) to house a pin for ball (1) rotation. The ball (1) is produced in a single el
A ball (1) for valves is described, comprising a substantially ball-shaped body (2), a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, and a slot (10) cut into the body (2) to house a pin for ball (1) rotation. The ball (1) is produced in a single element, and the hole (4, 5) terminates in a wall (6) in which a specifically shaped opening (12) is cut to regulate the amount of fluid flow between the entry and exit of the valve.
대표청구항
▼
1. Ball (1) for valves comprising: a substantially ball-shaped body (2),a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, anda slot (10) provided into the body (2) to house a pin for ball (1) rotation,characterised in thatsaid ball (1) is produced in
1. Ball (1) for valves comprising: a substantially ball-shaped body (2),a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, anda slot (10) provided into the body (2) to house a pin for ball (1) rotation,characterised in thatsaid ball (1) is produced in a single element,said hole (4, 5) terminates in a wall (6) in which a specifically shaped opening (12) is cut to regulate the amount of fluid flow between the entry and exit of the valve, andsaid wall (6) of the ball having the specifically shaped opening is recessed in relation to the external surface of the ball. 2. Ball (1) according to claim 1, characterised in that said hole (4, 5) has a cylindrical configuration (4) terminating in a hole having a spherical cap shape (5), so that said wall (6) in which the specifically shaped hole is cut has a substantially spherical cap shape with a fine thickness and a circular perimetric rim (7). 3. Ball (I) according to claim 2, characterised in that said specifically shaped opening (12) has a substantially equilateral triangular configuration inscribed inside the perimeter (7) of the wall (6). 4. Ball (1) according to claim 3, characterised in that the profiles of the sides (16, 17, 18) of the triangle forming said specifically shaped opening (12) are substantially curved. 5. Ball (1) according to claim 4, characterised in that said isosceles or equilateral triangle that defines the opening (12) presents a base (16) and two cathetus (17, 18), and wherein the profile of the base (16) is concave in relation to the center of the triangle and has a radius of curvature slightly less than the radius of curvature of the perimeter (7) of the wall (6) and the profiles of the two cathetus (17, 18) are convex in relation to the center of the triangle. 6. Ball (1) according to claim 1, characterised in that it comprises a substantially cylindrical undercut (9) arranged in a direction diametrically opposite the slot (10) for the rotation pin of the ball, having an axis that passes through the center of the ball (1) and at right angles to the axis of the hole (4) for the passage of the fluid flow, said cylindrical undercut (9) acting as a reference point for centering the ball during the culling of the specifically shaped opening (12). 7. Ball (1) according to claim 1 characterised in that it is produced in brass. 8. Method for the production of a ball (1) for valves according to claim 3, comprising the following stages: mechanical machining of a metal bar in order to obtain a body (2) that is substantially ball-shaped,cutting of a slot (10) on the external surface of the body to house a pin for ball rotation,boring of a blind hole (4, 5) terminating in a wall (6),punching or cutting of the wall (6) in a manner to obtain a specifically shaped opening (12) conceived to regulate the amount of fluid flow between the entry and exit of the valve,wherein the cutting action in the wall (6) is performed by means of a pair of male and female punches. 9. Method according to claim 8, characterised in that the female punch is positioned inside said hole (4, 5) in contact with the internal surface of the wall (6) and that the male punch operates on the external surface of the wall (6). 10. Method according to claim 8, characterised in that before said punch culling stage, a mechanical machining stage creates a centering undercut (9) in a direction diametrically opposite the slot (10) for the rotation pin of the ball, having an axis that passes through the center of the ball (1) and at right angles to the axis of the hole (4) for the passage of the fluid flow, said centering undercut (9) being used to center said male and female punches. 11. Method according to claim 8, characterised in that it comprises a mechanical machining stage on the external surface of said wall (6) in which the specifically shaped opening (12) is obtained, in a manner to reduce the diameter of said wall (6) in relation to the external surface of the ball (1). 12. Method according to claim 9, characterised in that before said punch culling stage, a mechanical machining stage creates a centering undercut (9) in a direction diametrically opposite the slot (10) for the rotation pin of the ball, having an axis that passes through the center of the ball (1) and at right angles to the axis of the hole (4) for the passage of the fluid flow, said centering undercut (9) being used to center said male and female punches. 13. Method according to claim 9, characterised in that it comprises a mechanical machining stage on the external surface of said wall (6) in which the specifically shaped opening (12) is obtained, in a manner to reduce the diameter of said wall (6) in relation to the external surface of the ball (1). 14. Method according to claim 10, characterised in that it comprises a mechanical machining stage on the external surface of said wall (6) in which the specifically shaped opening (12) is obtained, in a manner to reduce the diameter of said wall (6) in relation to the external surface of the ball (1).
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