Cylindrical shaft, transport roller, transport unit and printing apparatus
US9180702B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2010 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | May 9, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C3/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cylindrical shaft which is formed in a cylindrical shape by pressing process in a state in which a pair of ends are opposite to each other is disclosed. A joint is formed between the pair of ends, and includes a plurality of intersection portions extending in a direction intersecting with an axial direction of the cylindrical shaft, a first straight portion connecting the ends of one side each of the pair of adjacent intersection portions, and a second straight portion connecting the ends of the other sides of the pair of adjacent intersection portions and being shorter than the first straight portion. A distance between the pair of ends at the first straight portion is shorter than a distance between the pair of ends at the second straight portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.