Press to flatten bamboo stalks
US9962894B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Jun 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27N1/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A disclosed press 100 may flatten halved bamboo stalks or other workpieces without loss of volume or splintering. In a first mechanical movement executed by a pushrod drive train 300, a plurality of spreader bar assemblies 370 press upon the centerline of a workpiece such that the workpiece does not move off of a work surface but is yet not over crushed. Each spreader bar assembly may comprise two spreader bars 350 hingedly attached to a pushrod 345. The lower end of the pushrod and proximal ends 363 of the spreader bars pin down the workpiece. In a second mechanical movement executed by a crusher bar drive train 400, the distal ends of the spreader bars are moved outwardly and spread apart the curved walls of the workpiece. In the last phases of a second movement, planar track plates 440 press downwardly upon the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.