David M Houser

US Patent:

6483046, Nov 19, 2002

Filed:

Apr 24, 2000

Appl. No.:

09/559018

Inventors:

David E. Houser - Apalachin NY
James M. Larnerd - Binghamton NY
Jeffrey L. Lee - Vestal NY
Francis S. Poch - Apalachin NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01R 909

US Classification:

174266, 174262

Abstract:

The present invention provides a circuit board having burr free castellated plated through holes. In particular, the leading edge of the plated through hole, that tends to produce burr formation during conventional profiling, is removed or pre-profiled to off-set the leading edge of the plated through hole from a surface of the circuit board.

US Patent:

6527686, Mar 4, 2003

Filed:

Feb 2, 2000

Appl. No.:

09/496488

Inventors:

David Erle Houser - Apalachin NY
Joseph Duane Kulesza - Binghamton NY
Candido Tiberia - Endicott NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

B23Q 3157

US Classification:

483 1, 483 34, 483 13, 483 37, 483902, 33639, 408 97, 294104, 2941193, 294902

Abstract:

A movable spindle tool machine, such as a printed circuit board line drilling machine includes a base and a spindle mounted to the base. A magazine is mounted proximate the spindle for storing a supply of tools. A pitch independent tool changer is moveably mounted relative to the base for transferring tools from the magazine for insertion into the spindle. A tool locator is mounted in line with the spindle. The tool changer is operable to initially transfer a tool from the magazine to the tool locator to align the tool with the spindle and thereafter transfer the tool to the spindle for insertion into the spindle. The spindle is mounted to a nested outrigger guide. A positioning system can move two or more spindles simultaneously. A bit detector in a pressure foot button uses fiber optics to detect broken bits.

US Patent:

60272457, Feb 22, 2000

Filed:

Jul 26, 1999

Appl. No.:

9/361052

Inventors:

David E. Houser - Apalachin NY
Francis S. Poch - Apalachin NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01K 1100
G01N 2520

US Classification:

374162

Abstract:

The present invention provides a system for recording a heat exchange event within a drilled hole wall of a substrate during a drilling process. In particular, the invention includes a thermal sensitive film placed in contact with a substrate which is to be drilled, which is capable of recording a thermal signature of the heat transferred during the drilling process. The result is a ring shaped signature whose thickness provides a direct correlation to drilling temperature. With these results, the integrity of the substrate surrounding the drilled hole can be inspected.

US Patent:

59845236, Nov 16, 1999

Filed:

Feb 3, 1998

Appl. No.:

9/017741

Inventors:

David E. Houser - Apalachin NY
Francis S. Poch - Apalachin NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01K 1700
G01K 1300
G01K 1112

US Classification:

374 31

Abstract:

The present invention provides a system for recording a heat exchange event within a drilled hole wall of a substrate during a drilling process. In particular, the invention includes a thermal sensitive film placed in contact with a substrate which is to be drilled, which is capable of recording a thermal signature of the heat transferred during the drilling process. The result is a ring shaped signature whose thickness provides a direct correlation to drilling temperature. With these results, the integrity of the substrate surrounding the drilled hole can be inspected.

US Patent:

39891780, Nov 2, 1976

Filed:

Dec 11, 1975

Appl. No.:

5/639951

Inventors:

David Erle Houser - Apalachin NY
Kenneth John Lubert - Endicott NY
Richard Jay Morenus - Endwell NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K 332

US Classification:

228 45

Abstract:

Apparatus operative in conjunction with a wire routing and bonding machine, or the like, to selectively penetrate a maze of parallel wires on a printed circuit board and expose an area on the board so that additional wires may be suitably bonded to the exposed area. Utilizing the pressure it experiences when contacting the board surface, the apparatus operates to avoid damage to the printed circuit board surface and at the same time has a high reliability for clearing of wires from the selected area.

US Patent:

44151136, Nov 15, 1983

Filed:

Jan 7, 1981

Appl. No.:

6/223191

Inventors:

David E. Houser - Apalachin NY
Harold Kohn - Endwell NY
Gordon L. Williams - Endicott NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

B27F 700

US Classification:

227130

Abstract:

Multiple pins are affixed in the holes of a ceramic substrate by simultaneously impacting the pins with a piston assembly which temporarily places the pins in a viscoelastic fluid state. Upon return of the pins and the resultant fluid flow to its undisturbed solid state, each pin is left with an extension that is in interlocking engaged relationship with the ceramic particles of the substrate in the region surrounding the particular holes in which the pins have been located. The piston assembly is driven by a pneumatic high pressure system which is adjustable to the number of pins being simultaneously impacted. Release of the piston assembly is delayed until the air pressure becomes stabilized prior to impact. A vacuum pressure system returns the piston to its originating position after impact whereupon the piston assembly is ready for the next impact cycle.

US Patent:

46318216, Dec 30, 1986

Filed:

Dec 27, 1983

Appl. No.:

6/565959

Inventors:

David E. Houser - Apalachin NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K 300

US Classification:

29845

Abstract:

A method for fixing a pin to a ceramic substrate includes inserting the pin into a hole through the thickness of the substrate, restraining one end of the pin that extends from one surface of the substrate, and striking the end of the pin at the opposite end of the substrate with a force sufficient to form a head on the pin and to cause permanent radial expansion of the pin against the surface of the hole in the substrate.

US Patent:

61052469, Aug 22, 2000

Filed:

May 20, 1999

Appl. No.:

9/315428

Inventors:

David E. Houser - Apalachin NY
James M. Larnerd - Binghamton NY
Jeffrey L. Lee - Vestal NY
Francis S. Poch - Apalachin NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01K 310

US Classification:

29852

Abstract:

The present invention provides a method of creating a circuit board having burr free castellated plated through holes. In particular, the leading edge of the plated through hole, that tends to produce burr formation using conventional profiling methods, is removed or pre-profiled. The pre-profiled plated through hole is then profiled at a distance slightly off-set from the pre-profiled edge to further prevent burr formation.