Robert D Mackey

US Patent:

6716333, Apr 6, 2004

Filed:

Jun 6, 2001

Appl. No.:

09/875301

Inventors:

Thomas J. Pearsall - Palm City FL
Paul L. Lucas - Royal Palm Beach FL
Robert D. Mackey - Greensboro NC

Assignee:

Ceramic Coatings Technologies, Inc. - Palm City FL
Burckhardt America, Incorporated - Greensboro NC

International Classification:

C25D 1100

US Classification:

205106, 205107, 205323, 205324, 205333, 205325, 204164, 57414, 57404, 74572

Abstract:

A hard, wear-resistant ceramic surface is applied to spinning rotor cups in an electrolytic bath on which is imposed a shaped-wave electric current. A special electrode has been designed to facilitate application of the coating to the unique shape of a spinning rotor cup under the shaped wave conditions.

US Patent:

56759657, Oct 14, 1997

Filed:

May 26, 1995

Appl. No.:

8/452160

Inventors:

Robert D. Mackey - Greensboro NC
George C. Edwards - Greensboro NC

Assignee:

Burckhardt America, Inc. - Greensboro NC

International Classification:

D01H 400

US Classification:

57417

Abstract:

At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0. 003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge.

US Patent:

54759749, Dec 19, 1995

Filed:

Oct 21, 1994

Appl. No.:

8/327036

Inventors:

Robert D. Mackey - Greensboro NC
George C. Edwards - Greensboro NC

Assignee:

Burckhardt America, Inc. - Greensboro NC

International Classification:

D01H 440

US Classification:

57417

Abstract:

At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least. 003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge. The result of the engagement of the yarn with the ridge is that the twist is reduced and a higher break strength is achieved with a reduction in imperfections.

US Patent:

54371473, Aug 1, 1995

Filed:

Aug 20, 1992

Appl. No.:

7/932973

Inventors:

Robert D. Mackey - Greensboro NC
George C. Edwards - Greensboro NC

Assignee:

Burckhardt America, Inc. - Greensboro NC

International Classification:

D01H 440

US Classification:

57417

Abstract:

At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0. 003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge. The result of the engagement of the yarn with the ridge is that the twist is reduced and a higher break strength is achieved with a reduction in imperfections.