Extruder head with pivotal parts
US6273703A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/2562
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder head has a stationary head part and upper and lower head parts pivotal about respective upper and lower axes on the stationary part between inner positions closely juxtaposed with each other and with the stationary part and outer positions separated from each other and from the stationary part. Respective upper and lower latches engageable between the respective movable head parts and the stationary head part retain the movable parts against the stationary part. A crosswise latch engageable between the movable head parts retains the movable parts against each other in the inner positions thereof. The crosswise latch includes an actuator mounted on one of the movable head parts and a retaining member engageable with the other of the movable head parts. The actuator is a hydraulic cylinder having a piston rod forming the retaining member. More particularly the cylinder is mounted on the upper movable head part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.