Dispensing – Snap-acting outlet element – Axially movable tube – sleeve – or apertured cap
Patent
1977-02-01
1978-04-11
Makay, Albert J.
Dispensing
Snap-acting outlet element
Axially movable tube, sleeve, or apertured cap
222 63, 222239, 222410, B65G 6548
Patent
active
040834620
ABSTRACT:
An apparatus for discharging bulk material from a storage tank includes a support shaft; an impeller wheel mounted on the support shaft in the vicinity of the storage tank floor; and a stepping mechanism for intermittently moving the impeller wheel in either direction. The stepping mechanism has a ratchet wheel mounted on the support shaft and connected to the impeller wheel and a pawl mechanism cooperating with the ratchet wheel. A power cylinder, connected to a hydraulic circuit, is provided for moving the pawl mechanism. Further, there are provided a sensor arrangement for sensing the magnitude of the resistance of the bulk material to the motion of the impeller wheel and a control arrangement connected to the sensor arrangement and the pawl mechanism for reversing the direction of rotation of the impeller wheel when the resistance reaches a predetermined magnitude. The impeller wheel has at least one impeller vane associated with a discharge opening in the storage tank floor.
REFERENCES:
patent: 3278062 (1966-10-01), Densmore
patent: 3465685 (1969-09-01), Sherrod
patent: 3927774 (1975-12-01), Teske
Teske Fritz
Teske Lothar
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