Patent ID: 7159676
Filing Date: 2007-01-09
Classification: E21B

Abstract:
1. A fluid distributor device for a percussive drill assembly, the drill assembly including a generally tubular casing having a longitudinal centerline, an inner circumferential surface, and a generally annular recess extending circumferentially into the casing from the inner surface, the distributor device comprising: a generally cylindrical body disposeable within the casing and having a central axis, two opposing ends spaced apart along the axis, at least one fluid passage extending generally between the two ends, and a deflectable retainer portion configured to releasably engage with the casing so as to locate the body at a desired position with respect to the centerline, the retainer portion being engageable with the casing recess to retain the distributor body at the desired position and alternatively disengageable from the casing recess to permit the body to be displaceable in a direction along the casing centerline.