Casting method for matrix drill bits and reamers

Details Casting method for matrix drill bits and reamers Casting method for matrix drill bits and reamers

2011-01-31

2011-11-22

Kerns, Kevin P (Department: 1735)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S098000

Reexamination Certificate

active

08061405

ABSTRACT:
An apparatus and method for manufacturing a down hole tool that reduces manufacturing costs and enhances the tool's performance. A belted mold assembly includes a casting assembly, a belt assembly, and a mid-belt. The belted mold assembly is used to fabricate a casting that allows for a larger diameter blank to be used which displaces the more expensive casting material and for using a smaller outer diameter thin-walled mold. The casting assembly is disposed within the belt assembly and the mid-belt is loaded in the volume created between the casting assembly's outer surface and the belt assembly's inner surface. The mid-belt provides a bracing for the casting assembly during the casting process. Optionally, a cap can be disposed on top of the blank for preventing metallurgical bonds from forming between the binder material and the upper portion of the blank. This allows for the excess binder material to remain high in purity so that it can be reprocessed. The cap can be used with the belted mold assembly or with a casting assembly known in the prior art.

REFERENCES:
patent: 2344066 (1944-03-01), Taylor
patent: 2371489 (1945-03-01), Williams, Jr.
patent: 2493178 (1950-01-01), Williams, Jr.
patent: 3173314 (1965-03-01), Blackmer
patent: 3175260 (1965-03-01), Bridwell et al.
patent: 3757878 (1973-09-01), Wilder et al.
patent: 4234048 (1980-11-01), Rowley
patent: 4398952 (1983-08-01), Drake
patent: 4423646 (1984-01-01), Bernhardt
patent: 4460053 (1984-07-01), Jurgens et al.
patent: 4499795 (1985-02-01), Radtke
patent: 4667756 (1987-05-01), King et al.
patent: 4884477 (1989-12-01), Smith et al.
patent: 5373907 (1994-12-01), Weaver
patent: 5666864 (1997-09-01), Tibbitts
patent: 5732783 (1998-03-01), Truax et al.
patent: 5944128 (1999-08-01), Truax et al.
patent: 6045750 (2000-04-01), Drake et al.
patent: 6073518 (2000-06-01), Chow et al.
patent: 7398840 (2008-07-01), Ladi et al.
patent: 2008/0156148 (2008-07-01), Smith et al.
patent: 2011/0084420 (2011-04-01), Reese et al.
patent: 2011/0115118 (2011-05-01), Gallego et al.
patent: 2307699 (1997-06-01), None
U.S. Appl. No. 13/013,365, filed Jan. 25, 2011, Gilles Gallego.
U.S. Appl. No. 13/104,790, filed May 10, 2011, Reese et al.

Affiliated with

Also associated with

Rating

Casting method for matrix drill bits and reamers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Casting method for matrix drill bits and reamers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Casting method for matrix drill bits and reamers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4279351