Patent ID: 7131212

Claim:
A marking device of a trimming apparatus for marking a trimming line, said marking device comprising: a light source member comprising an illuminating element for generating a source light and a refracting element for converting said source light into a linear light beam to be outputted; a lever member comprising a first sustaining arm, a second sustaining arm and a channel formed between said first sustaining arm and said second sustaining arm, wherein a portion of said light source member is fixed in said channel; a supporting member comprising a sleeve for accommodating another portion of said light source member therein and an upper wing extending upwardly from said sleeve and conforming to said lever member, wherein said upper wing comprises a first bolt hole corresponding to said second sustaining arm of said lever member; a resilient element confined between said upper wing and said first sustaining arm of said lever member; and a first screw penetrating through said first bolt hole and in contact with said second sustaining arm of said lever member so as to render compression of said resilient element.