B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
259/1
B29B 7/28 (2006.01) B29B 7/72 (2006.01)
Patent
CA 1311747
ABSTRACT OF THE DISCLOSURE A kneading machine has a cylinder formed with upper and lower ports for compressed fluid, a piston slidably fitted in the cylinder and having a weight connected to the underside thereof, a case disposed under the cylinder and having an upper opening to be closed and opened by the weight and kneader blades disposed within the case. An overload preventing system is provided and includes an upper pipe extending from a compressed fluid feed source to the upper port. A solenoid valve and the upper pipe selectively communicates the upuper port with either the atmosphere or the compressed fluid feed source. Similarly, a lower pipe has a solenoid valve for selectively connecting the lower port to either the atmosphere or the compressed fluid feed source. A connecting pipe connects the upper and lower ports and includes a solenoid valve which selectively closes the connecting pipe. A kneader relay monitors the load of the motor which drives the kneader blades. When an overload is detected, the solenoid in the connecting pipe is opened so that the pressures on either side of the piston are equalized, thereby reducing the closing force of the weight and also reducing the motor load.
606742
Kabushiki Kaisha Kobe Seiko Sho
Riches Mckenzie & Herbert Llp
LandOfFree
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