Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1982-05-17
1985-12-24
Goldberg, Howard N.
Solid material comminution or disintegration
Apparatus
With automatic control
241 32, B02C 2500
Patent
active
045601100
ABSTRACT:
A hydraulic drive arrangement for a shear-type shredder includes an electrically operable control circuit, including a jam sensor external to the hydraulic fluid circuit, for sensing jamming conditions in the shredder and reversing the flow in the fluid circuit only when a true jamming condition is sensed. The jam sensor is located in the electrical power circuit to the electric motor driving the hydraulic fluid pump for sensing the load on the motor. An electric discriminator circuit responds to the sensor to distinguish between load changes due to true and momentary jamming conditions in the shredder. An actuator responsive to the discriminator actuates a flow-reversing valve in the hydraulic circuit to reverse fluid flow therein to reverse the shredder and thereby clear the jamming condition. The hydraulic fluid circuit, including a pressure relief valve, and the electric motor, dampen any abrupt changes in load due to momentary jamming conditions in the shredder so that they do not cause the discriminator to actuate the flow-reversing valve.
REFERENCES:
patent: 3868062 (1975-02-01), Cunningham et al.
patent: 4034918 (1977-07-01), Culbertson et al.
patent: 4123009 (1978-10-01), Kilpinen
patent: 4452400 (1984-06-01), Williams
Goldberg Howard N.
Gorski Joseph M.
MAC Corporation of America
LandOfFree
Current draw-actuated hydraulic drive arrangement for rotary shr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Current draw-actuated hydraulic drive arrangement for rotary shr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current draw-actuated hydraulic drive arrangement for rotary shr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1474726