Actuator apparatus and method enabling multiple piston velocities
US10857714B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2017 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Oct 31, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/1447
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An injection molding apparatus comprising an injection machine, a manifold, a mold, a clamp plate, an actuator interconnected to a valve pin and an external actuator controller, the actuator controller comprising a controller housing adapted to control upstream flow of drive fluid from an upstream actuator drive chamber such that the rate of travel of the drive piston is selectively adjustable to a first rate of travel or velocity over a first course of travel from a gate closed position to a predetermined position of upstream travel and such that the rate of travel of the drive piston beyond the predetermined intermediate upstream position occurs at a second rate of travel or velocity that is higher than the first rate of travel or velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.