Patent ID: 7009120
Filing Date: 2006-03-07
Classification: G01G

Abstract:
1. A scale comprising: a housing including a graduation provided thereon and having a lower portion; a cap engaged on said lower portion of said housing, wherein said cap can not be rotated relative to said housing; a protrusion fixed on said cap and projecting from said cap, wherein said first pressing element includes a receiving vacancy accommodating said protrusion such that said first pressing element can not be rotated relative to said cap; a first pressing element having an inner thread and engaged over said cap; an adjusting unit secured to said lower portion of said housing and including a rod and a knob, said rod having an external thread, said rod engaged on said knob and extended through said first pressing element and said cap, said knob engaged below said cap, wherein said external thread of said rod is engaged with said internal thread of said first pressing element such that said rod can be rotated relative to said first pressing element and said first pressing element can be moved in the direction where said rod is extended and where said spring can be compressed; a second pressing element slidably received in said housing; a spring received in said housing and between said first and second pressing elements; a carrying unit including a shaft having an end mounted on said second pressing element, and including a carrying portion suited for carrying an object to be weighed and connected to the other end of said shaft, wherein said shaft is engaged through said spring and extended through said rod and said knob and said carrying portion is engaged below said knob; and an indicator moved in concert with said second pressing element for aligning with said graduation and for indicating the weight of said object.