Leaf spring weighing scale
Electronic scales with two ranges
Wide range high accuracy weighing and counting scale
Weighing apparatus with overload protection for off-center loading Patent #: 4420054
ApplicationNo. 06/946123 filed on 12/24/1986
US Classes:177/164, PRESET177/211Strain gauge
ExaminersPrimary: Miller, George H. Jr.
Attorney, Agent or Firm
International ClassesG01G 21/00 (20060101)
G01G 3/00 (20060101)
G01G 3/14 (20060101)
Foreign Application Priority Data1984-08-20 JP
AbstractA multi-range load cell weighing scale includes a load receiving pan provided at the top of a casing, a high-range load cell disposed in the casing for a high range of weight determination, and a low-range load cell disposed in the casing for a low range of weight determination in a substantially horizontally juxtaposed relation to the high-range load cell. The low-range load cell has one end connected to one end of the high-range load cell. The other end of the high-range load cell is supported on the bottom of the casing, while the other end of the low-range load cell defines a load support on which the pan is supported. The load to be weighed bears on the two load cells simultaneously. The scale enables a wide range of highly accurate weight determination, despite its use of inexpensive load cells.