You can apply for Social Security retirement benefits up to four months before you are entitled to receive them. 1 How to Check the Status of an Address Change with the Post Office. 2 How to Start a Non Profit Organization in Ohio. 3 How to Obtain a Mexican Birth Certificate Online.
1 A caster is a wheel mounted to a fork, with an optional, additional offset steering joint. 2  An omni-directional wheel (Mecanum wheel, Omni wheel, or Swedish wheel) is made of a large central hub with many additional smaller wheels mounted along the perimeter such that their axes are perpendicular to the central wheel.
1 Body mechanics - refers to the best or safest body position to use in order to accomplish a heavy task.  Casters - the two small wheels at the front (or the rear) of the wheelchair which swivel in all directions. They contribute to the maneuverability of the wheelchair and come in either solid or pneumatic styles.