Load cell assembly

Details Load cell assembly Load cell assembly

1987-02-03

1988-10-04

Miller, Jr., George H.

Weighing scales

Structural installation

Geographic

177211, G01G 1902, G01G 314

Patent

active

047750189

ABSTRACT:
The invention provides a sealed shear load cell assembly for direct mounting to the load transfer portion of the weighing platform of a scale assembly. The load cell assembly cooperates with the weighing platform to provide a structural load bearing component for the scale assembly. The top surface section of the beam load cell structure provides a predetermined shear segment in the beam structure. A pair of axially aligned, opposing circular apertures are provided to form stress isolation webs along the longitudinal axis of the beam structure and which have spacially parallel end walls which are oppositely and vertically centered adjacent the predetermined shear segment in the beam structure. Strain gauges are mounted to each parallel end wall of the stress isolation webs, and bearings are operative on the beam structure at predetermined locations outside each said stress isolation web. An interiorly disposed channel structure is further provided in the beam structure for housing the electrical communicative wiring of the strain gauges. The channel structure is further comprised of a centrally disposed aperture extending through the lateral sides of the beam, an aperture through each stress isolation web and a longitudinally extending channel extending from one of each pair of the opposing circular apertures to the centrally disposed aperture. A sealing material in the interiorly disposed channel structure is further provided for isolating and protecting the electrical communicative wiring from environmental interaction.

REFERENCES:
patent: 3661220 (1972-05-01), Harris
patent: 3949822 (1976-04-01), English et al.
patent: 4020911 (1977-05-01), English et al.
patent: 4281728 (1981-08-01), Dickason et al.
patent: 4459863 (1984-07-01), Nordstrom
patent: 4581948 (1986-04-01), Reichow
patent: 4616723 (1986-10-01), Pietzsch et al.
patent: 4666003 (1987-05-01), Reichow
1982; Evergreen Weigh, Inc.; Race Car Wheel Weighers and Load Cells; preliminary bulletin.

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