Package making – With means responsive to a sensed condition – Of package and filled receptacle closing or opening
Patent
1996-07-30
1998-02-17
Culver, Horace M.
Package making
With means responsive to a sensed condition
Of package and filled receptacle closing or opening
53201, 53366, B65B 728, B65B 5100
Patent
active
057180970
ABSTRACT:
The invention comprises a DC motor and a mechanism for converting a rotational motion of the DC motor to a linear motion in a vertical direction; a jig driven by the DC motor for performing sealing of a sample container; a DC power source; a section for controlling power supplied from the DC power source to the DC motor; a circuit for detecting a value of current flowing from the DC power source to the DC motor; a section for setting a predetermined load to be applied to the jig when the sample container is sealed by the jig; and a comparator connected to the load setting section and the current value detecting circuit. The comparator compares a target value corresponding to the predetermined load value set in the load setting section, and an actually measured value detected in said current detecting circuit, with each other, and an instruction is issued to the DC motor controlling section when the actually measured value detected by the current detecting circuit exceeds the target value corresponding to the predetermined load value. The instruction controls the jig drive. The arrangement allows the load on the sealer robe accurately controlled without resorting to an expensive load cell or the like.
REFERENCES:
patent: 3972758 (1976-08-01), Bieber
patent: 4136443 (1979-01-01), Nabiullin et al.
patent: 4430142 (1984-02-01), Ochi et al.
patent: 5321935 (1994-06-01), Spatz et al.
patent: 5400564 (1995-03-01), Humphries et al.
patent: 5505572 (1996-04-01), Fujimori
Kinoshita Ryoichi
Ohshiro Keiko
Culver Horace M.
Seiko Instruments Inc.
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