G - Physics
01
B
33/145
G01B 3/40 (2006.01) G01B 3/48 (2006.01)
Patent
CA 1112039
PIPE THREAD GAUGE Abstract of the Disclosure A gauge for determining the pitch diameter of threads on pipe and tubing, for determining the taper of a thread on the pin or box end of tubular structures used in oil and gas ex- ploration and production, and for determining the existence of an out-of-round condition at the location of the threads on such tubular structures. The gauge includes an elongated scale rail, a pair of blade blocks slidably mounted on the scale rail, and a pair of thread engaging blades pivotally supported on the blade blocks. Locking and adjusting elements are provided in association with the blade blocks for locking the blade blocks in a fixed spatial relationship to each other along the length of the scale rail, with the distance therebetween precisely adjusted to a predetermined value. A series of interchangeable blade stop plates are provided for individual cooperative inter- action with the thread engaging blades and with the blade blocks to set the blades at a preselected angle in relation to each other in correlation to a specific thread taper dimension which is to be gauged. A set of interchangeable pitch diameter bars can optionally be provided for fixing the distance separating the thread engaging blades at a selected value corresponding to a predetermined pipe thread pitch diameter.
336757
Mustang Services Company
Ridout & Maybee Llp
LandOfFree
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