Mechanical coupler

Details Mechanical coupler Mechanical coupler

2005-06-14

2005-06-14

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

C081S442000, C081S443000

Reexamination Certificate

active

06904835

ABSTRACT:
Disclosed is a coupler that grips the internal surface of a torque receptor such as a pipe or driveshaft to be turned. When torque is applied to the coupler, one or more gripping surfaces are forced apart by a cam mechanism. The gripping surfaces tightly engage the internal surface of the pipe in response to movement of an internal cam. Torque applied to the wrench causes the pipe to turn. Because the wrench grips the internal diameter of a torque receptor, it can be used without damaging the external surface of the torque receptor, and used in very confined spaces. The gripping surfaces distribute the gripping load evenly across the pipe, which minimizes any deformation of the pipe.

REFERENCES:
patent: 1672053 (1928-06-01), Brown
patent: 2455005 (1948-11-01), Hall
patent: 2715346 (1955-08-01), Thomas
patent: 3296900 (1967-01-01), Behnke
patent: 3847040 (1974-11-01), Buffkin
patent: 3861251 (1975-01-01), Streander
patent: 3874714 (1975-04-01), Bebinger
patent: 3902384 (1975-09-01), Ehrier
patent: 4144779 (1979-03-01), Honick
patent: 4335632 (1982-06-01), Irwin et al.
patent: 4338981 (1982-07-01), Frauenberger
patent: 4377965 (1983-03-01), Eickmann
patent: 4499799 (1985-02-01), Bordages
patent: 4561330 (1985-12-01), Chen
patent: 5207131 (1993-05-01), Pool et al.
patent: 5257559 (1993-11-01), Cannetti
patent: 5349887 (1994-09-01), Suwa
patent: 6035745 (2000-03-01), Kather
patent: 6212709 (2001-04-01), Newton
patent: 6339980 (2002-01-01), Woolf
patent: 0571872 (1993-12-01), None
Pictures of Homemade Tool, 5 pages.
Ridge Tool-342 Internal Wrench.
BrassCraft T150 Internal Pipe Wrench
BrassCraft T167 Pipe Nipple Extractor.
Website: Plummingworld.com “Internal Pipe Wrench Set” 2 pages.

Affiliated with

Also associated with

Rating

Mechanical coupler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanical coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical coupler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3501028