Clamping cylinder system
US5061175A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B3/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A clamping cylinder system used in a diecast machine and the like and includes a clamping cylinder and a booster cylinder. The booster cylinder has two chambers different in inner diameters, and a booster piston has a small diameter portion and a large diameter portion, which correspond to the inner shapes of these chambers. During the low pressure of the clamping cylinder, the oil pressure is given to the clamping cylinder, with the booster cylinder being in non-operating condition, and, when a booster operating signal is given, the booster piston is operated. With this arrangement, a boosted pressure force in accordance with the ratio of the area between the small diameter portion and the large diameter portion of the booster piston can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.