Patent · US Expired

Lost-grain detector for harvesting machine

US4902264A · kind A · utility

21Cited by

4References

11Claims

0Family size

Assignee

Class OHG · DE

Inventors

Norbert Diekhans · Gütersloh, DE
Willi Behnke · Steinhagen, DE

Key dates

Filing date	Sep 14, 1988
Grant date	Feb 20, 1990
Priority date	—
Expiry date	Sep 14, 2008

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01D41/1273
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The grain-loss detector according to this invention usable in combination with a harvesting machine having an output passage comprises an impact plate having a front face exposed in the passage for direct contact by crop exiting the machine and an opposite back face and an electroacoustic transducer capable of converting vibration into an electrical output and having a side directly engaging the back face of the impact face. According to this invention the side of the transducer is retained in direct contact with the back face of the impact plate and electronic elements spaced from the transducer serve to convert the output of the transducer into a usable data signal.

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