Weighing scales – Self-positioning – Electrical current generating or modifying
Patent
1985-06-07
1987-03-31
Miller, Jr., George H.
Weighing scales
Self-positioning
Electrical current generating or modifying
177156, 177229, 73 1B, 7386265, G01G 314, G01G 2302, G01G 308, G01L 122, G01L 2500
Patent
active
046535993
ABSTRACT:
A load cell includes base and load receiving members connected together by a pair of parallel flexures to form a parallelogram configuration. One of the flexures has at least one strain gage secured thereon, along with a cantilevered stop member positioned between the base and load receiving members. The stop member is suspended between the ends of a pair of adjustable set screws threadably mounted in the base and load receiving members to provide for an overload and underload protection of the load cell. Additional adjustable set screws are strategically placed in the load cell to further provide for the selective adjustment and redistribution of stresses sensed by the strain gage whereby the same electrical signal will be produced independent of the location of a load along a longitudinal axis of the load cell or a second axis perpendicular thereto. Thus, the load cell cannot be overstressed and can be adjusted to provide the same weight readout regardless of the position of the load on a platter secured on the load receiving member.
REFERENCES:
patent: 4338825 (1982-07-01), Amlani et al.
patent: 4485881 (1984-12-01), Tramposch et al.
patent: 4515232 (1985-05-01), Rubinstein
patent: 4561512 (1985-12-01), Tramposch
patent: 4606421 (1986-08-01), Schroeder
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