Patent ID: 7748669

Claim:
An adjustable holding frame, comprising: a first bar; a second bar which has one end fastening to a lump element; and an adjustable means which includes: a base which is fastened to the first bar and an upper surface forming a first sloped surface portion which is a helical structure surrounding the upper surface at a gradually increasing height; a housing which is hollow and mounted onto the base to form a hollow portion with the base, and has an upper opening on a top end surface leading to the hollow portion, the hollow portion having an inner surface which has a portion forming an upper coupling surface, the housing having a notch on one side leading to the hollow portion; and a seat which is a cylinder and is slidable in the hollow portion of the housing, and has a top end surface forming a lower coupling surface corresponding to the upper coupling surface to mate the contour of the lump element, and a bottom end surface forming a second sloped surface portion which is another helical structure surrounding the bottom end surface at a gradually increasing height corresponding to the first sloped surface portion, the seat having a handle on one side extended radially outwards corresponding to the location of the notch; wherein the hollow portion limits the sliding movement of the seat within a range of a first position and a second position, and the first sloped surface portion and the second sloped surface portion selectively set the seat at either a first position or a second position; at the first position the lower coupling surface and the upper coupling surface compressing and anchoring the lump element; at the second position the lower coupling surface and the upper coupling surface releasing the lump element.