Roger W Holloway

US Patent:

7025913, Apr 11, 2006

Filed:

Apr 4, 2003

Appl. No.:

10/407472

Inventors:

Mark L. La Forest - Granger IN, US
Christopher S. Wahlers - South Bend IN, US
Roger W. Holloway - North Liberty IN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B29C 45/02
B29C 45/14

US Classification:

264 291, 264102, 264257, 264321, 2643284, 4251291, 425145, 425217, 425557

Abstract:

Resin or pitch is melted in a melt blender apparatus () and then loaded, into a heated jacketed holding tank (). A pair of feed lines () receives resin from the holding tank () and feeds an upper gear pump () and a lower gear pump (). A mixing enhancement such as a static mixer () is located in each of the feed lines () between the gear pumps () and the resin delivery ends () of the feed lines. The resin-melt feed lines may be equipped with pressure indicators () and pressure relief valves (). The resin-melt feed lines may also be equipped with pump accumulators (). Resin melt pressure created by the gear pumps () forces a piston inside the accumulator back to the desired position. The accumulators () can also be used to maintain constant pressure in the feed stock. Resin can be recycled from the accumulators () into the melt blender ().

US Patent:

7172408, Feb 6, 2007

Filed:

Jan 14, 2003

Appl. No.:

10/342042

Inventors:

Michael D. Wood - South Bend IN, US
Frank Dillon - Granger IN, US
Richard A. Heckelsberg - Niles MI, US
Roger W. Holloway - North Liberty IN, US
Mark L. LaForest - Granger IN, US
Neil Murdie - South Bend IN, US
Charles A. Parker - Granger IN, US
James F. Pigford - Kingwood TX, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

B29C 45/00

US Classification:

425557, 425116, 4251291, 425546

Abstract:

A resin transfer molding (RTM) process is disclosed for rapidly filling a fibrous preform and/or a rigid, porous body with high viscosity resin or pitch. The process is suitable for impregnated multiple porous bodies stacked in a single mold. The process uses a fibrous preform or rigid porous body which is placed into a mold matching the desired part geometry. A resin is injected into the mold at temperature and pressure. After cooling, the infiltrated component is removed from the mold. The mold is constructed from two halves fitted to form at least one mold cavity. A gate fitted with a nozzle is set into one of the mold halves, and a valve admits resin or pitch into the gate area. Venting or vacuum can be applied to the mold. The mold is held in a hydraulic press and an extruder, optionally fitted with an accumulator, supplies molten resin or pitch to the mold.

US Patent:

20050184413, Aug 25, 2005

Filed:

Feb 20, 2004

Appl. No.:

10/783548

Inventors:

Mark Forest - Granger IN, US
Christopher Wahlers - South Bend IN, US
Roger Holloway - North Liberty IN, US

International Classification:

C01B031/00

US Classification:

264029100, 264511000, 264571000

Abstract:

A rapid resin or pitch transfer molding apparatus, and a method of using it. The apparatus of this invention comprises: means for melting and conveying a resin or pitch; a mold () arranged so that melted resin or pitch is conveyed from the melting and conveying means into an annular mold cavity () within an insert () in the molding apparatus, wherein said insert comprises means () for effecting flow of the resin or pitch from the top () and bottom () of the mold cavity () to vents () located in the center of, at the top and/or bottom of, and/or annularly around the mold cavity (); and means disposed at the mold to constrain the mold during supply of the resin or pitch into the mold.

US Patent:

6537470, Mar 25, 2003

Filed:

Sep 1, 2000

Appl. No.:

09/653880

Inventors:

Michael D. Wood - South Bend IN
Frank Dillon - Granger IN
Richard A. Heckelsberg - Niles MI
Roger W. Holloway - North Liberty IN
Mark L. LaForest - Granger IN
Neil Murdie - South Bend IN
Charles A. Parker - Granger IN
James F. Pigford - Kingwood TX

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B29C 4514

US Classification:

264 295, 264 296, 264 297, 264 81, 264102, 264257, 264258

Abstract:

A resin transfer molding (RTM) process is disclosed for rapidly filling a fibrous preform and/or a rigid, porous body with high viscosity resin or pitch. The process is suitable for impregnated multiple porous bodies stacked in a single mold. The process uses a fibrous preform or rigid porous body which is placed into a mold matching the desired part geometry. A resin is injected into the mold at temperature and pressure. After cooling, the infiltrated component is removed from the mold. The mold is constructed from two halves fitted to form at least one mold cavity. A gate fitted with a nozzle is set into one of the mold halves, and a valve admits resin or pitch into the gate area. Venting or vacuum can be applied to the mold. The mold is held in a hydraulic press and an extruder, optionally fitted with an accumulator, supplies molten resin or pitch to the mold.