The ornamental design for a sleeve with cushionspring for mechanical pencil, as shown and described.
1.-2. Sleeve with cushion spring for mechanical pencil
1.1 : Perspective
1.2 : Front
1.3 : Top
1.4 : Right
1.5 : Left
1.6 : Cross-sectional
1.7 : Cross-sectional
1.8 : View showing state of use
1.9 : Enlarged view showing state of use
2.1 : Perspective
2.2 : Front
2.3 : Top
2.4 : Right
2.5 : Left
2.6 : Cross-sectional
2.7 : Cross-sectional
2.8 : View showing state of use
2.9 : Enlarged view showing state of use
Each article is a sleeve formed with a cushion spring is disposed in a mechanical pencil; when a writing lead is loaded with a writing pressure, the cushion spring is compressed, and an excessive writing pressure is released to prevent the writing lead from breaking; parts shown by broken lines do not constitute a claimed design; thin lines represent contours showing shadows only, and do not represent ornamentations nor decorations; views 1.8, 1.9, 2.8 and 2.9 form no part of the claimed design; back views are omitted because they are mirror images of the front views; bottom views are omitted because they are identical to the top views; cross-sectional views 1.6, 1.7, 2.6, and 2.7 show the cross-sections of views 1.2, 1.3, 2.2 and 2.3, respectively.