Calibration device for a helical spring scale
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专利名称：Calibration device for a helical spring scale
发明人：Frank Lee
申请号：US10791324
申请日：20040301
公开号：US07009120B2
公开日：
20060307
专利内容由知识产权出版社提供
专利附图：
摘要：A scale includes a housing, a first pressing element, a second pressing element,an adjusting unit, a spring, a carrying unit and an indicator. The housing includes a
graduation provided thereon and has a lower portion. The adjusting unit is secured to the lower portion of the housing and has a first thread. The first pressing element is slidably
secured in said housing and has a second thread engaged with the first thread of said adjusting unit. The adjusting unit can be rotated relative to the first pressing element for moving the first pressing element in the housing in the direction where the spring can be compressed. The second pressing element is slidably received in the housing. The spring is received in the housing and between the first and second pressing elements. The carrying unit is suited for carrying an object to be weighed and is engaged with the second pressing element. The indicator is moved in concert with the second pressing element for aligning with the graduation and for indicating the weight of the object.
申请人：Frank Lee
地址：Taipei TW
国籍：TW
代理机构：J.C. Patents
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