Abstract: A resilient pipe thread protector comprises a substantially annular resilient body having an interior opening provided with a thread pattern conformed to mate with the threads of the ends of a drill pipe. To allow for installation onto drill pipes of various sizes the thread protector includes a convolved split defining a plurality of interlocking projections and includes a similarly patterned circular spring within the interior thereof. The foregoing assembly may be formed by injection molding with the convolved split being achieved through the use of a separator plate splitting the mold.

Abstract: A resilient pipe thread protector comprises a substantially annular resilient body having an interior opening provided with a thread pattern conformed to mate with the threads of the ends of a drill pipe. To allow for installation onto drill pipes of various sizes the thread protector includes a convolved split defining a plurality of interlocking projections and includes a similarly patterned circular spring within the interior thereof. The foregoing assembly may be formed by injection molding with the convolved split being achieved through the use of a separator plate splitting the mold.In the alternative the convolved split may be formed along inclined surfaces where each projection is received in a pocket-like recess conformed for telescopic receipt thereof.

Abstract: A basketball practice assembly that may be removably secured to a back board supported hoop in a desired position to assist a player in improving his ability to make successful free throws or side shots. The practice assembly is of such design that two of them may be oppositely positioned on side portions of a basketball hoop to permit two players to simultaneously practice side shots.