FIG. 1 is a first perspective view of a first embodiment of a caster showing our new design;
FIG. 2 is a second perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a right view thereof;
FIG. 8 is a left view thereof;
FIG. 9 is an enlarged sectional view indicated in FIG. 3;
FIG. 10 is an enlarged sectional view indicated in FIG. 5;
FIG. 11 is a first perspective view of a second embodiment of a caster showing our new design;
FIG. 12 is a second perspective view thereof;
FIG. 13 is a front view thereof;
FIG. 14 is a back view thereof;
FIG. 15 is a top view thereof;
FIG. 16 is a bottom view thereof;
FIG. 17 is a right view thereof;
FIG. 18 is a left view thereof;
FIG. 19 is an enlarged sectional view indicated in FIG. 13;
FIG. 20 is an enlarged sectional view indicated in FIG. 15;
FIG. 21 is a first perspective view of a third embodiment of a caster showing our new design;
FIG. 22 is a second perspective view thereof;
FIG. 23 is a front view thereof;
FIG. 24 is a back view thereof;
FIG. 25 is a top view thereof;
FIG. 26 is a bottom view thereof;
FIG. 27 is a right view thereof;
FIG. 28 is a left view thereof;
FIG. 29 is an enlarged sectional view indicated in FIG. 23; and,
FIG. 30 is an enlarged sectional view indicated in FIG. 25.