FIG. 1 is a front view of a first embodiment of the invention, the rear, right, and left view being substantially identical to the front view.
FIG. 2 is a bottom view of a first embodiment of the invention.
FIG. 3 is a top view of a first embodiment of the invention.
FIG. 4 is a front view of a second embodiment of the invention, the rear, right, and left view being substantially identical to the front view.
FIG. 5 is a bottom view of a second embodiment of the invention.
FIG. 6 is a top view of a second embodiment of the invention.
FIG. 7 is a front view of a third embodiment of the invention, the rear, right, and left view being substantially identical to the front view.
FIG. 8 is a bottom view of a third embodiment of the invention; and,
FIG. 9 is a top view of a third embodiment of the invention.
The broken line showing the shaft, as seen at least in FIGS. 1-3 and 6-8, forms no part of the claimed design.