G - Physics – 01 – G
Patent
G - Physics
01
G
265/6
G01G 23/18 (2006.01)
Patent
CA 1220497
ABSTRACT In a weighing scale having a weighing tray structure for holding a product to be weighed, the tray structure being connected to a member strained by the weight of the tray structure and product during a weighing operation, signal generating means connected with the strained member for producing a signal representing the strain of the member caused by the tray structure and product, and calibration means for determining the parameters of tare and slope in the strain signal, the calibration means including a calibration weight of known amount, actuator means for lowering the calibration weight to a lowered position on the tray structure and forming a part of the weight thereof, and for lifting the calibration weight to a raised position off of the tray structure and free thereof, a coupling connected between the actuator means and the calibration weight and having a first member connected to the actuator means and a second member coupling to a interlocking with the first member, the second member also forming part of the weight of known amount, the first and second members being in contacting and load transmitting relationship in the raised position when the calibration weight is lifted off of the tray structure and the members being disengaged in the lowered position when the calibration weight is on the tray structure.
503506
Douglas Ellwood S.
Mosher Oren A.
Mosher Oren G.
Ogilvy Renault
Package Machinery Co.
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