Patent · US Expired

Low noise planing machine, particularly hand planer

US4497354A · kind A · utility

0Cited by

5References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin E. Kummer · Auburn, US
Uwe Krieg · Echterdingen, DE
Wolfgang Jundt · Ditzingen, DE
Werner Rieker · Waldenbuch, DE
Fritz Schadlich · Echterdingen, DE
Gunter Schaal · Stuttgart, DE

Key dates

Filing date	Jun 6, 1984
Grant date	Feb 5, 1985
Priority date	—
Expiry date	Jun 6, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23Q11/0096
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

To reduce operating noise, and particularly the impact of sound pressure waves on the internal structure of the planing machine, the edges defining separating walls against which sound waves may impinge are inclined with respect to the axis of rotation of the cutter (16) or a theoretical line (46) parallel thereto, thereby extending the time of impact of individual pressure waves emanating from the cutter of incremental surface areas of the respective edges (26, 48, 50; 42, 52, 54; 30) to simultaneously attenuate the impact of the pressure waves and the timing of the impact.

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