EUGENE L FOSTER
Engineering in Alton, NH
License number
Massachusetts 13471
Issued Date
Sep 15, 1960
Expiration Date
Jun 30, 2000
Type
Mechanical Engineer
Address
Address
Alton, NH 03810
Professional information
Locking Joint
US Patent:
5785357, Jul 28, 1998
Filed:
Jun 21, 1996
Appl. No.:
8/668279
Inventors:
Eugene L. Foster - Alton Bay NH
K. Douglass Lum - McLean VA
K. Douglass Lum - McLean VA
Assignee:
UTD, Inc. - Newington VA
International Classification:
F16L 1508
US Classification:
285 92
Abstract:
A threaded joint is provided with a locking mechanism for resisting loosening and over torquing. The joint has splines that are alignable with axially directed fingers, and shear plates that are movable into the spaces between the splines and the fingers. The shear plates may be supported by a shear ring. A lock ring may be provided for maintaining the shear plates between the respective spaces. Another embodiment of the joint has a knurled portion that is alignable with axially directed fingers. The joint also includes a clamp ring engageable with the fingers.