IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0925924
(2001-08-09)
|
우선권정보 |
EP-0810711 (2000-08-09) |
발명자
/ 주소 |
- Vrubl, Radek
- Gloor, Roland
|
출원인 / 주소 |
- Alcan Technology & Management Ltd.
|
대리인 / 주소 |
Ostrolenk, Faber, Gerb & Soffen, LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a container with a chamber with a longitudinal ax
An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a container with a chamber with a longitudinal axis MRwhich accommodates the extrusion block, an extrusion stem which is introduced into the container chamber, and features a dummy block, a mandrel arm with a longitudinal axis MDforming the inner wall of the pipe-section, and a die with an opening with a longitudinal axis MMforming the outer wall of the pipe section. The mandrel arm is arranged such that it can be pushed out of the dummy block through the extrusion block up to or into the die opening. The mandrel arm in the position for extrusion is arranged eccentric in cross-section with respect to the container chamber and the die opening and the die opening is arranged eccentric in cross-section with respect to the container chamber.
대표청구항
▼
An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a container with a chamber with a longitudinal ax
An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a container with a chamber with a longitudinal axis MRwhich accommodates the extrusion block, an extrusion stem which is introduced into the container chamber, and features a dummy block, a mandrel arm with a longitudinal axis MDforming the inner wall of the pipe-section, and a die with an opening with a longitudinal axis MMforming the outer wall of the pipe section. The mandrel arm is arranged such that it can be pushed out of the dummy block through the extrusion block up to or into the die opening. The mandrel arm in the position for extrusion is arranged eccentric in cross-section with respect to the container chamber and the die opening and the die opening is arranged eccentric in cross-section with respect to the container chamber. ng an eyewear frame comprising the initial step of extruding an elongated billet of substantially rigid material having a top surface having predetermined convex cross-sectional initially as extruded curvature and a bottom surface having a predetermined concave cross-sectional initially as extruded curvature. The next step involves mounting a predetermined length of the elongated billet in a holding fixture of a computer numerical control (CNC) cutting machine. Next the CNC cutting machine is operated to cut out predetermined lens apertures and a finished eyewear frame around each of the previously machined lens apertures thereby producing a substantially stress free eyewear frame that is ready to have a stress free lens installed in its lens aperture. Macriss et al.; US-4742694, 19880500, Yamanaka et al.; US-4779425, 19881000, Sasaki et al.; US-4809518, 19890300, Murayama, 062/225; US-4813474, 19890300, Umezu; US-4848100, 19890700, Barthel et al.; US-4852364, 19890800, Seener et al.; US-4854130, 19890800, Naruse et al.; US-4888957, 19891200, Chmielewski; US-4938032, 19900700, Mudford; US-4942740, 19900700, Shaw et al.; US-4947655, 19900800, Shaw; US-4955205, 19900900, Wilkinson; US-4955207, 19900900, Mink; US-4979372, 19901200, Tanaka; US-4984433, 19910100, Worthington; US-5050393, 19910900, Bryant; US-5058388, 19911000, Shaw et al.; US-5062276, 19911100, Dudley; US-5065591, 19911100, Shaw; US-5070707, 19911200, Ni; US-5072597, 19911200, Bromley et al.; US-5076068, 19911200, Mikhail; US-5094598, 19920300, Amata et al.; US-5107906, 19920400, Swe
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