Method of and device for forming openings in a gelatinous substance
US4354406A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Jan 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8756
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for forming openings in a gelatinous substance in a Petri dish in which the Petri dish (6) is lifted towards punch tools (19) until the tools have penetrated the gelatinous substance and are on or near the base of the dish. The dish is then moved with a low amplitude motion perpendicular to the penetration direction, i.e. horizontally to loosen a pellet of the gelatinous substance within each punch tool from the base (6a) of the dish, and finally the dish is lowered to withdraw the punch tools (19) from the dish while suction applied to a compartment (4) communicating with the interior of each tool extracts the punched pellet and clears the tool for a subsequent penetration in the same or a different dish (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.