Weighing scales – Computer – Electrical
Patent
1990-04-06
1991-09-17
Miller, Jr., George H.
Weighing scales
Computer
Electrical
177 59, G01G 1316
Patent
active
050486233
ABSTRACT:
A combination weighing apparatus having weighing buckets to weigh masses of material and subsequently transfer them to auxiliary buckets for temporary storage, the masses in the weighing buckets and/or auxiliary buckets being selected in combination processing and then discharged to forming a batch of predetermined weight, the apparatus comprising: a first detecting means detecting a timing to open outlet gates of the weighing bucket to transfer the mass to the auxiliary buckets; a timer means sequentially measuring, based on the timing, such an additional time length needed to completely transfer the mass remaining in the weighing bucket into the auxiliary bucket; a second detecting means detecting a further timing to open outlet gates of the auxiliary buckets to discharge the mass selected in the combination processing; and a setting means setting, based on the further timing, duration of said outlet gate's opened state of the auxiliary bucket, the duration being given by adding the additional time length to such a further time length needed to completely discharge the mass from the auxiliary buckets. The second detecting means and the setting means may be replaced by a deciding means making a decision as to whether or not the mass transferred to the auxiliary bucket is subject to selection, based the remaining time length measured by the timer means is or is not zero, the remaining time length being given by subtracting a combination-computing time from an ordinary time length necessary for the mass in the weighing bucket to be completely transferred to the auxiliary bucket.
REFERENCES:
patent: 4418771 (1983-12-01), Henry et al.
patent: 4446938 (1984-05-01), Kawanishi
patent: 4454924 (1984-06-01), Minamida
patent: 4627504 (1986-12-01), Moran
Miller Jr. George H.
Yamato Scale Company Limited
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