Abstract: An electro-mechanical displacement exercise apparatus for processing a maximum force potential of an athlete, including a frame a frame including a platform, wherein a section of the platform is connected to a tower, whereby the tower houses control means for manipulating a tension supporting member connected to a force bearing member, a first pull location, whereby the first pull location is positioned on the platform and within the frame and whereby the first pull location is operatively connected with a portion of the tension supporting member, whereby a user may exert a force on the tension supporting member operatively connected to a first actuator; and wherein the first actuator is housed within the tower, and whereby the first actuator includes a motor coupled to a gearbox.

Abstract: A relatively lightweight tarping system for use with trailers or other open top containers includes first and second spaced frame members and an elongated flexible member such as a cable or chain connected to and extending therebetween. A tarpaulin may be mounted thereon so that the frame members, flexible member and tarpaulin are pivotable between a covered position atop the open top container and an uncovered position. A four-bar linkage is preferably used in combination with a rotational drive mechanism to provide various advantages in rotating the tarpaulin assembly between the covered and uncovered positions. A width adjustment mechanism is provided to provide usage with trailers or other open top containers of different widths. An improved seal is provided between the tarpaulin and container.

Abstract: A crane comprising a boom formed as an elongate tubular structure and a line assembly to extend a line from a least one end of the boom. The line assembly may include a first bank of sheaves, a second bank of sheaves, a line reeved around the first and second banks of sheaves, and an extension mechanism controlling the distance between the first and second banks of sheaves. The second bank of sheaves and at least a portion of the extension mechanism being enclosed within boom.