Michael J March

US Patent:

6702684, Mar 9, 2004

Filed:

Jun 28, 2002

Appl. No.:

10/186940

Inventors:

Thomas E. Harbin - Westminster CA
Hai-Tao Wang - Fountain Valley CA
Michael U. March - Torrance CA

Assignee:

Huck International, Inc. - Tuscon AZ

International Classification:

B23G 500

US Classification:

470 2, 470 10, 411361

Abstract:

A fastening system is provided that includes a fastener having a pin member with a lock groove and crest geometry that is optimized to receive swaged material from collars of materials of different strengths for securing workpieces for different load applications. The lock grooves have the longest width required for collars of lower strength for one application or greater strength for a second application and the crests have the longest width required for collars of greater strength for the second application whereby satisfactory clamp and tensile loads and resistance to failure will result when the lock grooves are filled with collar materials of different strengths. The lock groove and crest geometry is of a uniform construction for the plurality of applications with pin members of a common diameter. Certain collars of different materials have similar outside diameters for installation by a tool having a swage anvil with a uniform swage cavity that swages the collars into the lock grooves for securing workpieces in shear, shear/tension, shear composite and shear/tension composite applications. A method of designing a fastener is also provided that has a uniform lock groove and crest geometry for use in the plurality of applications.

US Patent:

7195438, Mar 27, 2007

Filed:

Jan 5, 2004

Appl. No.:

10/753000

Inventors:

Thomas E. Harbin - Westminster CA, US
Hai-Tao Wang - Fountain Valley CA, US
Michael U. March - Torrance CA, US

Assignee:

Huck International, Inc. - Tucson AZ

International Classification:

F16B 19/00

US Classification:

411361, 470 10, 470361, 2952503

Abstract:

A fastening system is provided that includes a fastener having a pin member with a lock groove and crest geometry that is optimized to receive swaged material from collars of materials of different strengths for securing workpieces for different load applications. The lock grooves have the longest width required for collars of lower strength for one application or greater strength for a second application and the crests have the longest width required for collars of greater strength for the second application whereby satisfactory clamp and tensile loads and resistance to failure will result when the lock grooves are filled with collar materials of different strengths. Certain collars of different materials have similar outside diameters for installation by a tool having a swage anvil with a uniform swage cavity that swages the collars into the lock grooves for securing workpieces in shear, shear/tension, shear composite and shear/tension composite applications.

US Patent:

7695226, Apr 13, 2010

Filed:

Sep 21, 2006

Appl. No.:

11/533964

Inventors:

Michael U. March - Torrance CA, US
Oviedo Arciniega - Perris CA, US

Assignee:

Alcoa Global Fasteners, Inc. - Torrance CA

International Classification:

F16B 13/00

US Classification:

411 43, 411339, 411361

Abstract:

A fastener adapted to pass through aligned holes through workpieces is disclosed. The fastener includes a pin member having a transition portion wherein the diameter of the transition portion decreases radially as it extends from the smooth cylindrical shank portion to the threaded portion. The fastener may also comprise a sleeve member and a clamping means. The clamping means includes a collar, a nut, or any other possible clamping means. In exemplary embodiments, the workpieces can be formed with a plurality of materials, the materials including composite, metallic, or composite/metallic structures, any combination thereof. In particular embodiments, the fastener has interference capability of 0. 0005 to 0. 0100 inches in composite structures without risk of composite delamination or damage. As a result of the fastener interference, gaps between the fastener and the structure are eliminated thereby providing good electrical conductivity between components.

US Patent:

8475102, Jul 2, 2013

Filed:

Oct 20, 2010

Appl. No.:

12/908347

Inventors:

Luke Haylock - Culver City CA, US
Rodrigo Pinheiro - Riverside CA, US
Hasim Mulazimoglu - Buena Park CA, US
Michael March - Torrance CA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

F16B 19/00

US Classification:

411361, 411 69, 411914

Abstract:

A sleeve interference fastener adapted to be installed in a hole of a structure includes a sleeve; a pin member, wherein the pin member has a transition zone between a shank portion and a locking portion and wherein a portion of the pin member comprises a low friction dielectric coating; a locking member; wherein, in the installed position, a first interface between the shank portion of the pin member and the sleeve is substantially free from the low friction dielectric coating, and wherein, in the installed position, the transition zone of the pin member and a second interface between the locking portion of the pin member and the locking member are substantially covered with the low friction dielectric coating.

US Patent:

8573910, Nov 5, 2013

Filed:

Mar 26, 2010

Appl. No.:

12/732396

Inventors:

Michael U. March - Torrance CA, US
Oviedo Arciniega - Perris CA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

F16B 13/00

US Classification:

411 43, 411 69, 411361

Abstract:

A fastener adapted to pass through aligned holes through workpieces is disclosed. The fastener includes a pin member having a transition portion wherein the diameter of the transition portion decreases radially as it extends from the smooth cylindrical shank portion to the threaded portion. The fastener may also comprise a sleeve member and a clamping means. The clamping means includes a collar, a nut, or any other possible clamping means. In exemplary embodiments, the workpieces can be formed with a plurality of materials, the materials including composite, metallic, or composite/metallic structures, any combination thereof. In particular embodiments, the fastener has interference capability of 0. 0005 to 0. 0100 inches in composite structures without risk of composite delamination or damage. As a result of the fastener interference, gaps between the fastener and the structure are eliminated thereby providing good electrical conductivity between components.

US Patent:

61493635, Nov 21, 2000

Filed:

Oct 29, 1998

Appl. No.:

9/183209

Inventors:

Michael U. March - Torrance CA

Assignee:

Huck International, Inc. - Tucson AZ

International Classification:

F16B 3500
F16B 3504
B21D 1704
B21H 302

US Classification:

4113661

Abstract:

The present invention is to a lightweight threaded bolt type fastener having a shank with a large diameter portion and small diameter portion connected by a transition portion; a thread is roll formed on the small diameter portion and terminates in a run-out section where the thread gradually decreases in root depth and width and with the run-out section being of minimal axial length and being located closely adjacent the transition portion to produce a run-out zone of minimal axial length. A rolling die for forming the thread with minimal thread run-out having ridge segments with tapered end surfaces for providing the run-out thread with an end wall parallel to the transition portion and a method of making the bolt type fastener.

US Patent:

20160069380, Mar 10, 2016

Filed:

Sep 8, 2015

Appl. No.:

14/847326

Inventors:

- Pittsburgh PA, US
Gregory Rizza - Westminster CA, US
Luke Haylock - Culver City CA, US
Hasim Mulazimoglu - La Habra CA, US
Michael March - Torrance CA, US
Andreas Liebscher - San Diego CA, US
Manish Kamal - Seal Beach CA, US

Assignee:

ALCOA INC. - Pittsburgh PA

International Classification:

F16B 39/34

Abstract:

A locking member includes a base portion having a first end, a second end opposite the first end, a bore extending from the first end to the second, the bore including a threaded portion having a plurality of internal threads, and an insert having a first end, a second end opposite the first end of the insert, a bore extending from the first end of the insert to the second end of the insert, the bore of the insert including a threaded portion having a plurality of internal threads. The insert is positioned within the bore of the nut. The insert is made from an electrically dispersive and electrically absorbent material, such as polymers, elastomers, flame retardant fabrics, metal foam, carbon foam, polymer foam or aerogel.