Seals with indicia and method of molding seals with indicia to allow inspection after trimming
US5348314A · kind A · utility
8Cited by
17References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Mar 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/047
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Indicia creating patterns are placed in a mold assembly used for making seals. The molded seal body includes trimming entry surface indicia and trimming exit surface indicia to provide visual targets to use when setting up equipment to trim a waste portion from the finished seal . The indicia are sized such that a seal is considered properly trimmed if a portion, but not the entirety of the entry surface indicia and exit surface indicia remain on the finished seal at each point of trimming around the circumference of the seal body. Thus, one can quickly determine if a seal is properly trimmed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.