Sway adjustment apparatus

A sway adjustment apparatus comprising:

• a casing including a first end and a second end, the casing including internal threads on an interior surface;
• a fastener positioned within an interior of the casing, the fastener including a first set of external threads and a second set of external threads on an exterior surface, the first set of external threads cooperating with the internal threads of the casing, the fastener rotating in a first direction to extend the fastener from the casing and rotating in a second direction to retract the fastener into the casing;
• a first seal positioned near the first end of the casing, the first seal positioned between the interior surface of the casing and the exterior surface of the fastener;
• a second seal positioned near the second end of the casing, the second seal positioned between the interior surface of the casing and the exterior surface of the fastener, the first and second seals forming a lubricant reservoir to maintain lubricant in the first set of external threads of the fastener and the internal threads of the casing;
• a cover positioned at a first end of the fastener;
• and
• an end member positioned at a second end of the fastener, the end member maintaining the position of the fastener within the casing;
• wherein the first set of external threads is positioned between the first and second seals, the second set of external threads is positioned on an opposite side of the second seal, and the first set of external threads has a larger circumference than the second set of external threads.

A sway adjustment apparatus comprising:

• a casing including a first end and a second end, the casing including internal threads on an interior surface;
• a fastener positioned within an interior of the casing, the fastener including a first set of external threads, as second set of external threads, a first surface, and a second surface on an exterior surface, the first set of external threads cooperating with the internal threads of the casing, the fastener rotating in a first direction to extend the fastener from the casing and rotating in a second direction to retract the fastener into the casing;
• a first seal positioned near the first end of the casing, the first seal positioned between the interior surface of the casing and the exterior surface of the fastener;
• a second seal positioned near the second end of the casing, the second seal positioned between the interior surface of the casing and the exterior surface of the fastener, the first and second seals forming a lubricant reservoir to maintain lubricant in the first set of external threads of the fastener and the internal threads of the casing;
• a cover positioned at a first end of the fastener, the cover limiting an amount of retraction;
• and
• an end member positioned at a second end of the fastener, the end member maintaining the position of the fastener within the casing;
• wherein the first set of external threads is positioned between the first and second seals, and the second set of external threads is positioned on an opposite side of the second seal;
• wherein the first surface is positioned next to the first set of external threads, and the first surface interacts with the first seal;
• wherein the second surface is positioned between the first set of threads and the second set of threads, and the second surface interacts with the second seal;
• and
• wherein the first surface has a larger circumference than the first set of external threads, which has a larger circumference than the second surface, which has a larger circumference than the second set of external threads.