Thomas Lee Gustafson

US Patent:

60741392, Jun 13, 2000

Filed:

Dec 2, 1998

Appl. No.:

9/203467

Inventors:

Thomas Gene Gustafson - Brooklyn Park MN
Dennis John Werner - Dallas TX

Assignee:

General Electric Co. - Schenectady NY

International Classification:

B23B 3500
B23B 3900
B23B 322

US Classification:

408 1R

Abstract:

A method of boring a plurality of aligned, mating bolt holes in a pair of separated coupling flanges comprising the steps of: a) providing a template with pre-formed holes matching a desired location for bolt holes in the pair of coupling flanges; b) securing the template to a first of the pair of coupling flanges; c) attaching a boring tool to the template in alignment with one of the bolt holes; d) re-boring one of the bolt holes in the first coupling flange and repeating steps c) and d) for each remaining bolt hole individually in succession; e) removing the boring tool and template from the first coupling flange; f) relocating the template on the second of the pair of coupling flanges; and g) repeating steps b) through e) for the bolt holes in the second coupling flange.

US Patent:

46372954, Jan 20, 1987

Filed:

Apr 9, 1985

Appl. No.:

6/721872

Inventors:

Frederick A. Powers - Maple Grove MN
Thomas J. Gustafson - Brooklyn Park MN

International Classification:

F01B 1102
F04B 704
F02F 1100

US Classification:

92170

Abstract:

A pump seal is provided for use in a pump suited to move high viscosity and abrasive materials. A piston in the pump has a substantial amount of clearance relative to the cylinders in which it operates with the seal providing substantially the only contact in sealing between the piston and the cylinders. The seal is formed of a relatively soft, elastomeric material which is normally of a plainer, annular shape. Along with a rigid annular ring plate, the elastic ring is sandwiched between the closure member and housing member. The ring plate has a curved surface facing the closure member which serves to backup and support the relatively soft elastic ring under pressure.