Abstract: A logging block (16) formed in accordance with the present invention includes a frame (56) having a first end and an opposing second end and a sheave (50) having an upper side (58) and an opposing lower side (62) coupled to the second end of the frame such that the sheave rotatably contacts a continuous loop of cable (12) as the cable travels along a mono-cable path (32). Located at the first end of the frame (56) is a mounting assembly (77) providing at least two mounting slots (78) used for securing the frame to a stationary object along the mono-cable path (32), such as a tree or stump (20). The mounting slots (78) are positioned with respect to the sheave (50) such that when the logging block (16) is in operation, the alignment of a mounting slot is either above, below or directly in line with the sheave.

Abstract: A trailer system 10 is disclosed that offers enhanced load carrying capacity and maneuverability. The system includes primary and auxiliary trailers 28 and 30. The primary trailer 28 includes a bed assembly 36 that pivots about a horizontal bar 50 securing it to the primary trailer support assembly 34. The auxiliary trailer 30 is secured by vertical pins 164 and 184 and horizontal plates 96, 160, and 180 to the primary trailer 28. An air cushion system 32 controls the pivotal relationship between the bed assembly 36 and support assembly 34, allowing the auxiliary trailer 30 to be pivoted upward off the ground in connection with a sliding support system for weight transfer. As a result, it is easier to control the trailer system 10 when backed up.