Title:
HAND GUIDE TYPE TROWEL FOR GYROSCOPE CONTROL
Document Type and Number:
Japanese Patent JP2005139892
Kind Code:
A
Abstract:
To permit to quickly and accurately detect the rotation of a trowel which does not reacts to noise level in an ordinary operating state and is uncontrollable.
In this control method for the hand guide type trowel, uncontrollable and undesired rotation of the trowel is detected and obstructed, and the trowel has an engine for rotating a rotor. A control module has a gyroscope and a controller. This gyroscope generates an electric signal corresponding to the angular velocity of a reference body of the hand guide type trowel, and the controller receives an electric signal from the gyroscope. According to the judgement whether the angular velocity exceeds a predetermined threshold value, the engine interrupts the rotation of the rotor.
Inventors:
BROWN MICHAEL
JENKINS MICHAEL
KRUEPKE GREGORY
JENKINS MICHAEL
KRUEPKE GREGORY
Application Number:
JP2004315687A
Publication Date:
June 02, 2005
Filing Date:
October 29, 2004
Export Citation:
Assignee:
WACKER CORP
International Classes:
E04F21/24; G01C19/00; G01C19/42; (IPC1-7): E04F21/24; G01C19/00
Domestic Patent References:
| JPH09119213A | 1997-05-06 | |||
| JPH0579187A | 1993-03-30 | |||
| JPH1088804A | 1998-04-07 | |||
| JPH09119213A | 1997-05-06 | |||
| JPH0579187A | 1993-03-30 | |||
| JPH1088804A | 1998-04-07 |
Foreign References:
| US4232980A | 1980-11-11 | |||
| US4232980A | 1980-11-11 |
Attorney, Agent or Firm:
Seiichi Sawaki
Kiichi Sawaki
Kiichi Sawaki