Method for aligning an element with respect to another and a system for unloading rolls using the method according to the invention
US5930885A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7009
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of precisely aligning and positioning a first portion of a first element with respect to a corresponding portion of a second element comprises the following steps: a) providing the first portion with a regular polygonal recess having N faces, a first circle with a given diameter being inscribed by said N faces of said polygonal recess; b) providing the corresponding portion of the second element with N freely rotating cylindrical rollers, said rollers being positioned in such a way as to be equally angularly spaced and inscribed in a second circle whose diameter is substantially equal to the diameter of the first circle; c) moving one of the elements with respect to the other in such a way as to introduce the N cylindrical rollers into said polygonal recess wherein each of the rollers substantially faces a corresponding vertex of the polygonal recess; and d) rotating one of said portions with respect to the other portion of said elements through an angle substantially equal to 180/N.degree. once the N cylindrical rollers are in the polygonal recess in order to precisely align the two elements with respect to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.