Locking hard gelatin capsule
US4040536A · kind A · utility
83Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1975 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | May 5, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S220/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hard gelatin capsule, especially for medicaments, having a cylindrical body and a cylindrical cap that telescopes over the open end of the body in which the interior surface of the cap, which overlaps the body, is provided with toothlike projections spaced around the circumference thereof to lock the body and cap against relative axial and rotational movement. In a preferred form of the invention the projections have gently-sloping side walls in both the lateral (circumferential) and longitudinal (axial) directions, which facilitate removing the cap from the dipping pin on which it is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.