Patent · US Expired

Device for controlling the drive and forward feed of microtomes, particularly ultramicrotomes

US5181443A · kind A · utility

15Cited by

4References

16Claims

0Family size

Inventors

Hellmuth Sitte · Laa an der Thaya, AT
Helmut Hassig · Homburg, DE
Armin Kunz · Ditzingen, DE
Klaus Neumann · Niederwerrn, DE

Key dates

Filing date	Apr 10, 1991
Grant date	Jan 26, 1993
Priority date	—
Expiry date	Apr 10, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T83/6566
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for controlling the drive and forward feed of a microtome, particularly an ultramicrotome, includes a driving motor for moving a specimen or knife and a servomotor for generating a forward feed of the specimen towards an edge of the knife or vice versa. A high travelling speed of the specimen needed for rapid initial cutting is coupled to a high rate of forward feed. One single switching operation is performed, for instance, by a snap-engaging step switch via relay switches. The driving motor and the servomotor can be simultaneously switched over to pairs of values which correspond to subsequent rough cutting and ultra-thin cutting. Individual values for cutting speed and forward feed are separately preselected, readjusted, and read from a display. Selected program stages are indicated by signals.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.