Roller for winding and unwinding a protective cover equipping a machine tool or the like
US5775619A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Sep 23, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/60
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roller comprises: a support shaft bearing at either opposite end a bush supporting an external tubular element containing the shaft and destined to be a support element of a cover fixed thereto by one end; a motor to recall the roller by setting the tubular element in rotation about the shaft in an opposite direction to that followed during an unwinding of the cover, and constituted by at least two helix springs, separate but cooperating, which are coaxially keyed on the shaft; the ends of each spring being stably fixed on corresponding seats exhibited by a first support keyed on the shaft and a second support, axially fixed and rotatably mounted on the shaft, and solid to the tubular element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.