| 摘要 |
<p>A telescoping assembly including a first member attached to a spring button device which comprises a button end and a biasing component outwardly biasing said button end; a second hollow member with an internal diameter which is larger than the external diameter of the first hollow member; wherein the second hollow member includes at least two circumferentially spaced rows of longitudinally spaced apart apertures extending along the length of the member for at least a portion thereof and wherein the apertures in each row are longitudinally offset with apertures in a different row so that every aperture is located a different distance from a distal end of said second member; wherein the button end is dimensioned to fit through any of said apertures in the second member when aligned therewith as a consequence of the force imparted by the biasing component to fix the relative position of the two members.</p> |
