Load cell with bossed sensor plate for an electrical weighing scale
AssigneeMeasurement Specialties, Inc.
InventorsCHRIS GROSS, DAMON GERMANTON
Life of this patent
Estimating the term…
Abstract
A sensor plate for use in a load cell for use in an electronic scale comprising a planar first surface; a planar second surface opposite the first surface having a depression formed therein defining a flexure area; a load cavity formed in the second surface having a conical receptacle end for receiving a strut; and sensors disposed over the flexure area for generating a signal in response to a load applied to the loading cavity wherein the strut has a first conical projection end coupled to the conical receptacle end of the loading cavity and a second end coupled to a footer member such that the strut mechanically floats therebetween for providing the applied load at a substantially central position at the load cavity.
Claims24
A sensor plate for use in a load cell for an electronic scale comprising:
- a planar first surface;
- a planar second surface opposite said first surface having a depression formed therein defining a flexure area;
- a load cavity formed in said second surface having a conical end for receiving a floating strut;
- sensor means disposed over said flexure area for generating a signal in response to a load applied to said load cavity via said floating strut, wherein said floating strut has a first projection coupled to said conical end of said load cavity and a second projection end coupled to a footer member such that said strut mechanically floats therebetween for providing said applied load at a substantially central position of said load cavity.
A load cell for use in an electronic weighing scale comprising:
- a sensor plate having a flexure area coupled between a loading cavity having a conical end portion for receiving a strut, said strut having a first conical projection engaging said loading cavity and a second conical projection engaging an indentation within a footer member for receiving an applied load, wherein said strut is floatingly coupled between said sensor plate and said footer member for transferring said applied load to said loading cavity at a substantially central point;
- and
- sensor means disposed on said flexure area for generating an electrical signal in response to said transferred load applied to said loading cavity of said sensor plate, wherein said electrical signal is indicative of said applied load.
An electronic scale for displaying the weight of a load applied to said scale comprising:
- a platform;
- a plurality of load cells attached to said platform for elevating said platform above a supporting surface, each of said load cells supporting a portion of a load and including a bossed diaphragm sensor plate having a loading cavity, a flexure area and sensor means disposed on said flexure area for generating an electrical signal is response to a load applied to said loading cavity of said sensor plate, said electrical signal being indicative of an applied load, wherein said load applied to said loading cavity occurs via a strut having a conical projection engaging a corresponding conical receptacle in said loading cavity, said strut having a second conical projection engaging a similarly shaped receptacle in a footer member such that said strut is floatingly retained between said footer member and said sensor plate;
- and
- display means for receiving said electrical signals generated by said sensor plate in each of said load cells and displaying the weight of the load.
A load cell for use in an electronic weighing scale comprising:
- a bossed diaphragm sensor plate having a conical strut engaging a portion of said bossed diaphragm sensor plate for applying a force thereto;
- and
- sensor means disposed on said bossed diaphragm sensor plate for generating an electrical signal indicative of said applied force.
Dependencies are inferred from the claim text.