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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5205789-A, on 27 April 1993. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003376

Flexible drilling motor coupling

Published
Permanent URL
Classification
Industrial Motion & Power Transmission › Rotary Motion
Assignee
FALGOUT SR THOMAS E
Original source
US-5205789-A, the United States Patent and Trademark Office, 27 April 1993
Document SHA-256
ade13eacaf436ce93cdb08f3cb53248e5268ba5e0a5e895a7319236b42a948ca

A modified jaw type shaft coupling has two opposed members arranged to allow limited flexure about a point that is the geometric center of mating spherical surfaces, a concave surface on one member and a mating convex surface on the other member. One member is attached to each shaft to be rotationally and axially coupled. The jaws on one coupling member have lugs that extend radially inward to axially entrap a larger flange attached to the other coupling member. The flange has notches to allow the flange to axially traverse the lugs. The flange is then rotated relative to the lugs to allow the flange to oppose the lugs. The flange is secured to the other coupling member after the coupling members are axially moved together to allow the jaws to interdigitate to provide rotational coupling. The convex and concave surfaces cooperate to accept axial compressive loads and the flange and lugs prevent axial separation.

Sheet 1
Sheet 1

Abstract

A modified jaw type shaft coupling has two opposed members arranged to allow limited flexure about a point that is the geometric center of mating spherical surfaces, a concave surface on one member and a mating convex surface on the other member. One member is attached to each shaft to be rotationally and axially coupled. The jaws on one coupling member have lugs that extend radially inward to axially entrap a larger flange attached to the other coupling member. The flange has notches to allow the flange to axially traverse the lugs. The flange is then rotated relative to the lugs to allow the flange to oppose the lugs. The flange is secured to the other coupling member after the coupling members are axially moved together to allow the jaws to interdigitate to provide rotational coupling. The convex and concave surfaces cooperate to accept axial compressive loads and the flange and lugs prevent axial separation.

1. Drawings

[0001]Sheet 1.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003376, “Flexible drilling motor coupling,” published September 15, 2026 at 20:18:27 UTC, https://opentechnical.org/p/OT-2026-000003376.

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