Abstract: A compressor assembly having a high velocity muffler system which produces a particle-free compressor pump feed while reducing noise output from the compressor assembly during compressing operations. The high velocity muffler system is maintenance-free and comprises an inertia filter. The compressor assembly uses a method for producing a compressor pump feed and reducing noise during compressing operations by processing a gas through the high velocity muffler system which has an inertia filter and a muffler chamber to produce a compressor pump feed which can be compressed by a pump assembly.

Abstract: A gate assembly that can include a frame with first and second mounts to mount the gate assembly across a V-door space on a rig floor, a first gate rotationally attached to a left side of the frame, and a second gate rotationally attached to a right side of the frame, such that the first and second gates selectively permit and prevent access through the V-door space. Inner panels of the first and second gates can be configured to automatically open and close in response to a catwalk extending into the V-door space or retracting from the V-door space.

Abstract: A gate assembly that can include a frame with first and second mounts to mount the gate assembly across a V-door space on a rig floor, a first gate rotationally attached to a left side of the frame, and a second gate rotationally attached to a right side of the frame, such that the first and second gates selectively permit and prevent access through the V-door space. Inner panels of the first and second gates can be configured to automatically open and close in response to a catwalk extending into the V-door space or retracting from the V-door space.

Abstract: An elevating catwalk apparatus for use at a well bore drilling site, or the like, for effectively elevating the "ground level" with respect to the drilling floor of the well drilling apparatus and comprising a base framework structure having a catwalk secured thereto by a plurality of spaced support posts and movable between elevated and lowered positions with respect thereto, the opposite ends of the support posts being pivotally secured between the catwalk and the base framework, angularly disposed brace members having one end pivotally secured to at least one of the support posts and the opposite end pivotally and slidably secured to the base structure for strengthening the support of the catwalk in the elevated position thereof, the catwalk being responsive to longitudinal pressure in one direction for moving upwardly with respect to the base framework and pressure in an opposite direction for moving downwardly with respect to the base framework.