Anthony N Boyd

US Patent:

20030127857, Jul 10, 2003

Filed:

Feb 14, 2003

Appl. No.:

10/367988

Inventors:

Harper Boyd - Lake Charles LA, US
Anthony Boyd - Loreauville LA, US

Assignee:

Boyd's Bit Service, Inc. - Lake Charles LA

International Classification:

F16L025/00
F16L035/00

US Classification:

285/330000

Abstract:

A locking swivel apparatus including an upper body portion having a counter bore about a cylindrical axis and a mandrel having an upper end receivable in the counter bore. The locking swivel also includes a lower cap member engaged with the upper body portion and disposed to secure the upper end of the mandrel in the counter bore. The locking swivel further includes an internal locking arrangement including a plurality of mating axial teeth configured to selectively couple and decouple the upper body portion and the mandrel. The selective coupling and decoupling disposed to correspondingly constrain and allow relative rotation of the upper body portion and the mandrel about the cylindrical axis. Methods are provided for fabricating embodiments of the present invention.