Composite load cell
First Claim
1. A strain gage load cell comprising:
- a load cell sensing element of load cell quality material and a non-sensing element of a plastic material directly and fixedly coupled to said sensing element.
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Accused Products
Abstract
A low cost strain gage load cell made without compromising accuracy and stability by a composite structure using a sensing element formed of a load cell quality material, such as metal or a metal alloy, and adjoining non-sensing elements formed of a molded plastic material. Stable and secure joints between the load cell sensing element and the plastic non-sensing element of such a load cell are provided using various structures and related structural manufacturing methods. For example, non-sensing elements, such as a mounting block to mount the load cell to a base support and a load application block to receive a load platform, are formed of an injection molded plastic and sensing elements, such as first and second parallel beams of a load cell quality metal alloy, have ends embedded in the injected molded plastic non-sensing elements. The composite load cell structure is applicable to many different types of load cell designs.
58 Citations
39 Claims
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1. A strain gage load cell comprising:
- a load cell sensing element of load cell quality material and a non-sensing element of a plastic material directly and fixedly coupled to said sensing element.
- View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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2. A strain gage load cell comprising:
- a load cell sensing element of load cell quality material and a non-sensing element of a plastic material joined to said sensing element, wherein said non-sensing element is formed of an injection molded plastic and said sensing element has a gripping surface embedded in said injected molded plastic non-sensing element.
- View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A strain gage load cell comprising:
- a load cell sensing element of load cell quality material and a non-sensing element of plastic material joined to said sensing element, wherein said non-sensing element is formed of an injection molded plastic and said sensing element has a gripping surface embedded in said injection molded plastic non-sensing element, said load sensing element comprises a first beam formed of a flat piece of transducer quality metal alloy and having ends with gripping surfaces in the form of holes or notches, and plastic non-sensing elements are injection molded over said first beam ends.
- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification