FIG. 1 is a front view of the a piezoelectric element showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a perspective view thereof;
FIG. 8 is an enlarged view showing a portion of FIG. 3 defined by the lines 8-8;
FIG. 9 is an enlarged view showing a portion of FIG. 3 defined by the line 9-9;
FIG. 10 is an enlarged view showing a portion of FIG. 4 defined by the line 10-10;
FIG. 11 is an enlarged view showing a portion of FIG. 4 defined by the line 11-11;
FIG. 12 is an enlarged view showing a portion of FIG. 5 defined by the line 12-12;
FIG. 13 is an enlarged view showing a portion of FIG. 6 defined by the line 13-13;
FIG. 14 is an enlarged sectional view taken along the line 14-14 in FIG. 1 defined by the line 1401-1401;
FIG. 15 is an enlarged sectional view taken along the line 15-15 in FIG. 1 defined by the line 1501-1501;
FIG. 16 is an enlarged sectional view taken along the line 16-16 in FIG. 1 defined by the line 1601-1601;
FIG. 17 is a front view of a second embodiment of a piezoelectric element showing our new design;
FIG. 18 is a rear view thereof;
FIG. 19 is a top plan view thereof;
FIG. 20 is a bottom view thereof;
FIG. 21 is a right side view thereof;
FIG. 22 is a left side view thereof;
FIG. 23 is a perspective view thereof;
FIG. 24 is an enlarged view showing a portion of FIG. 19 defined by the lines 24-24;
FIG. 25 is an enlarged view showing a portion of FIG. 19 defined by the lines 25-25;
FIG. 26 is an enlarged view showing a portion of FIG. 20 defined by the line 26-26;
FIG. 27 is an enlarged view showing a portion of FIG. 20 defined by the line 27-27;
FIG. 28 is an enlarged view showing a portion of FIG. 21 defined by the line 28-28;
FIG. 29 is an enlarged view showing a portion of FIG. 22 defined by the line 29-29;
FIG. 30 is an enlarged sectional view taken along the line 30-30 in FIG. 17 defined by the line 3001-3001;
FIG. 31 is an enlarged sectional view taken along the line 31-31 in FIG. 17 defined by the line 3101-3101;
FIG. 32 is an enlarged sectional view taken along the line 32-32 in FIG. 17 defined by the line 3201-3201;
FIG. 33 is a front view of a third embodiment of a piezoelectric element showing our new design;
FIG. 34 is a rear view thereof;
FIG. 35 is a top plan view thereof;
FIG. 36 is a bottom view thereof;
FIG. 37 is a right side view thereof;
FIG. 38 is a left side view thereof;
FIG. 39 is a perspective view thereof;
FIG. 40 is an enlarged view showing a portion of FIG. 35 defined by the lines 40-40;
FIG. 41 is an enlarged view showing a portion of FIG. 35 defined by the lines 41-41;
FIG. 42 is an enlarged view showing a portion of FIG. 36 defined by the line 42-42;
FIG. 43 is an enlarged view showing a portion of FIG. 36 defined by the line 43-43;
FIG. 44 is an enlarged view showing a portion of FIG. 37 defined by the line 44-44;
FIG. 45 is an enlarged view showing a portion of FIG. 38 defined by the line 45-45;
FIG. 46 is an enlarged sectional view taken along the line 46-46 in FIG. 33 defined by the line 4601-4601;
FIG. 47 is an enlarged sectional view taken along the line 47-47 in FIG. 33 defined by the line 4701-4701; and,
FIG. 48 is an enlarged sectional view taken along the line 48-48 in FIG. 33 defined by the line 4801-4801.
The broken lines shown represent the portions of the piezoelectric element that form no part of the claimed design. The dot-dash broken lines shown define the bounds of the claimed design and form no part thereof.