Expandable drum including adjustable stops for setting drum circumference
US5264068A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Apr 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/1049
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for forming an annular product features in such arrangement that, around a drum shaft sheathing over a main shaft, tapering structures each having axial slidability are provided, and in response to a slide move of the tapering structure, drum segments are each radially expanded or retracted. A stopper for controlling a slide move of the tapering structure is provided and an axial position of the stopper is regulated by a motor through a ball screw mechanism disposed in the main shaft. Thereby, settings and changes of a circumferential length of the drum which determines the length of the annular product are easily made and can be made with great certainty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.