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Title: Thread gauge for tapered threads

The thread gauge permits the user to determine the pitch diameter of tapered threads at the intersection of the pitch cone and the end face of the object being measured. A pair of opposed anvils having lines of threads which match the configuration and taper of the threads on the part being measured are brought into meshing engagement with the threads on opposite sides of the part. The anvils are located linearly into their proper positions by stop fingers on the anvils that are brought into abutting engagement with the end face of the part. This places predetermined reference points of the pitch cone of the thread anvils in registration with corresponding points on the end face of the part being measured, resulting in an accurate determination of the pitch diameter at that location. The thread anvils can be arranged for measuring either internal or external threads. 13 figures.
Inventors:
Issue Date:
OSTI Identifier:
5151300
Assignee:
PTO; EDB-94-065144
Patent Number(s):
US 5276971; A
Application Number:
PPN: US 8-024531
Contract Number:
AC04-76DP00613
Resource Relation:
Patent File Date: 1 Mar 1993
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; FASTENERS; MEASURING INSTRUMENTS; DESIGN; MEASURING METHODS; POSITIONING; THREADED JOINTS; JOINTS; 440800* - Miscellaneous Instrumentation- (1990-)