Abstract: A pessary insertion apparatus providing a rigid, elongated body having an crescentic shape. The body defines a bottom portion and a pair of opposing side wall portions. The side wall portions extending from the bottom portion a distance approximately equal to or greater than the height of the folded pessary. The body sized and adapted to hold the pessary therein. The crescentic shape extending the full length of the body so that, when in the vaginal cavity, the body holds the vaginal cavity open and defines a passageway through which the user may reach the back end of the pessary to force the pessary from the body and into position. Holes in the bottom portion of the body enhance gripping of the pessary insertion apparatus.

Abstract: endless chains such as used for heavy-duty conveyors or crawler tractors often use spaced, coacting links with laterally overlying ends joined by hinge pins and bushings to couple segments carrying either load bearing plates or track shoes. Severe work environments often include fine particles of abrasive material which detrimentally affects the hinge joints. Therefore, suitable seals are provided to exclude such material. Without proper care, the joints deteriorate to the point where pins wear, loosen in link bores, and shift axially sufficiently to reduce the seal effectiveness. The sealed and lubricated chain hinge joints of the invention use pins with stepped ends to assure optimum positioning and functioning of the seals and to maintain against joint separation by inadvertent axial displacement of hinge pins.