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US 4,184,265 AGranted
Thread gage
AssigneeHydril Company
InventorJames Horton
Life of this patent
Estimating the term…
Abstract
A thread gaging tool having a clamp member for rigidly clamping to a pipe end includes an axially sliding assembly coupled to a linear computer input transducer and supporting a pivoted arm provided with a gage pin which is inserted into the pipe thread to precisely measure the distance of each thread wall from the pipe end.
Claims11
A tool for gaging thread pitch and width at a plurality of locations in threads in the end of a pipe, said tool including:
- a base element having at least one flat surface;
- clamp means for clamping said base element to the pipe with said base element flat surface parallel with the longitudinal axis of said pipe and at a predetermined spacing from the threaded end of said pipe;
- a movable member slidably coupled to said base element flat surface, said movable member being movable along said flat surface in only a direction parallel with the longitudinal axis of said pipe;
- an arm coupled to said movable member having a portion overlying the threads in said pipe;
- a gage pin mounted in the portion of said arm overlying said threads and positioned therein for insertion in said threads;
- measuring means for measuring the relative movement between said base element and said movable member;
- and
- a handle mounted on said arm for inserting and positioning said gage pin in said threads, said handle including at least one spring-loaded trigger and a switch coupled to said trigger for interrogating said measuring means when a predetermined force is exerted against said trigger.
5 more elements
Dependencies are inferred from the claim text.