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US 6,222,137 B1Granted
Dolly type drum scale
AssigneeWayac Inc.
InventorCharles E. Handford
Life of this patent
Estimating the term…
Abstract
A portable scale for weighing drums, cylinders and other containers is describe. The scale is lightweight and easily transportable and due to the use of three load cells instead of the traditional four, it is highly accurate even on uneven floor surfaces. The weighing platform is low to the ground and has a loading ramp making placement of objects to be weighed easier.
Claims10
A portable scale for weighing containers, comprising:
- a) a load platform being generally triangular in shape for supporting objects to be weighed;
- b) three (3) load cells mounted to said platform each of said load cells affixed at one end to said load platform, one of said load cells near a first comer of said load platform, one of said load cells near a second comer of said load platform, and one of said load cells near a third comer of said load platform, each of said load cells affixed at the other end to a pivotal pedestal provided for contacting the ground;
- c) a column extending upright from said platform;
- d) at least one wheel in association with said platform;
- and
- e) an electronic controller in association with said three (3) load cells for displaying the weight of a container located on said platform;
- whereby each of said pivotal pedestals makes solid contact with the ground even when said load platform resides on an uneven surface;
- thereby allowing an accurate weight measurement of said container to be obtained.
5 more elements
The drum scale of claim wherein said platform for supporting objects to be weighed comprises a sheet metal deck surface strengthened by the existence of at least one bend.
A drum scale for weighing containers comprising:
- a) a load platform being generally triangular in shape for supporting objects to be weighed, said load platform comprising a sheet metal deck strengthened by the existence of at least one bend, said platform further comprising a loading ramp formed by bending a portion of said load platform toward the floor surface;
- b) three load cells mounted to said load platform, each of said load cells attached at one end to said load platform, one of said load cells near a first comer of said load platform, one of said load cells near a second comer of said load platform, and one of said load cells near a third comer of said load platform, such that said load cells form substantially a triangle, each of said load cells attached at the other end to a pivotal pedestal extending downward from said load platform and provided to contact said floor surface;
- c) a column extending upright from said load platform at a proximal end, said column also having a distal end, said column being hollow;
- d) two wheels, in association with said load platform, not contacting said floor surface when said load cells are in contact with said floor surface;
- e) a foot extension affixed to said column near its said proximal end;
- f) a handle attached near said distal end of said column, and;
- g) an electronic controller being connected electronically by wires extending through said hollow portion of said column to said three load cells, said electronic controller for displaying the weight of a container located on said platform, said electronic controller being attached to said distal end of said column and adapted to rotate about said column, said rotation being limited to less than 360 degrees by the placement of said handle;
- whereby each of said pivotal pedestals makes solid contact with the ground even when said load platform resides on an uneven surface;
- thereby allowing an accurate weight measurement of said container to be obtained.
6 more elements
A drum scale for weighing containers comprising:
- a) a load platform being generally triangular in shape for supporting objects to be weighed, said load platform comprising a sheet metal deck;
- b) three load cells mounted to said load platform, each of said load cells attached at one end to said load platform, one of said load cells near a first comer of said load platform, one of said load cells near a second comer of said load platform, and one of said load cells near a third comer of said load platform, such that said load cells form substantially a triangle, each of said load cells attached at the other end to a pivotal pedestal extending downward from said load platform and provided to contact said floor surface;
- c) a column extending upright from said platform at a proximal end, said column also having a distal end;
- d) at least one wheel, in association with said platform, not contacting the floor surface when said load cells are in contact with said floor surface;
- e) a handle in association with said column, and;
- f) an electronic controller being connected electronically by wires to said three load cells, for displaying the weight of a container located on said platform, said electronic controller being attached to said distal end of said column by a means which allows for rotation of said electronic controller about said column;
- whereby each of said pivotal pedestals makes solid contact with the ground even when said load platform resides on an uneven surface;
- thereby allowing an accurate weight measurement said container to be accurately obtained and displayed on said electronic controller.
5 more elements
Dependencies are inferred from the claim text.