George P Mitchell

US Patent:

20060240746, Oct 26, 2006

Filed:

Mar 6, 2006

Appl. No.:

11/369145

Inventors:

Edward Bittner - Madison CT, US
George Mitchell - Oxford CT, US
Ronald Taylor - Oxford CT, US

International Classification:

B24B 51/00
B24B 1/00
B23F 19/05

US Classification:

451005000, 451054000, 451147000

Abstract:

A gear shaper machine system drives and maneuvers a hone tool to generate teeth geometry in a manner the teeth were machined prior to a hardening process. After heat treatment, the hone tool is indexed to the teeth geometry spacing of the workpiece so as to divide the stock removal evenly between the drive and coast sides. The hone tool may be driven with rotational and reciprocating synchronous teeth generating motion in which the hone tool reciprocates along the length of the teeth parallel to the centerline of the workpiece while the workpiece and hone tool rotate with synchronous motion.

US Patent:

60744812, Jun 13, 2000

Filed:

May 2, 1997

Appl. No.:

8/850048

Inventors:

Edward H. Bittner - Madison CT
Walter S. Koscomb - Sandy Hook CT
George D. Mitchell - Oxford CT

Assignee:

Sikorsky Aircraft Corporation - Stratford CT

International Classification:

B05C 320

US Classification:

118504

Abstract:

A masking tool (60) for use in combination with a shaped-workpiece (30. sub. S) in the manufacture of a precision gear (10), which shaped workpiece (30. sub. S) defines a plurality of gear teeth (12) and tooth space surfaces (68) defined by and between adjacent gear teeth (12). The masking tool (60) is, furthermore, operative to mask the tooth space surfaces (68) during surface deposition of a masking material (28) while facilitating deposition of the masking material (28) upon the top lands (14) of the gear teeth (12). The masking tool includes a flexible back-plate (64) and a plurality of compliant masking segments (62) bonded to and integrated by the flexible back-plate (64). Each of the compliant masking segments (62) define a surface geometry (66) which is substantially complementary to the respective tooth space surface (68). Furthermore, adjacent compliant masking segments (62) define an open-ended channel (70) therebetween. In use, the masking tool (60) is forcibly urged in combination with the precision gear (10) such that the compliant masking segments (62) are disposed in superposed engagement with the tooth space surfaces (68) for prohibiting deposition of the masking material thereupon, and the open-ended channels (70) permit deposition of the masking material (28) on the top lands (14) of the gear teeth (12).

US Patent:

60803495, Jun 27, 2000

Filed:

May 11, 1998

Appl. No.:

9/075674

Inventors:

Edward H. Bittner - Madison CT
Walter S. Koscomb - Sandy Hook CT
George D. Mitchell - Oxford CT

Assignee:

Sikorsky Aircraft Corporation - Stratford CT

International Classification:

B32B 3112
B32B 3120

US Classification:

264220

Abstract:

A masking tool (60) for use in combination with a shaped-workpiece (30. sub. S) in the manufacture of a precision gear (10), which shaped workpiece (30. sub. S) defines a plurality of gear teeth (12) and tooth space surfaces (68) defined by and between adjacent gear teeth (12). The masking tool (60) is, furthermore, operative to mask the tooth space surfaces (68) during surface deposition of a masking material (28) while facilitating deposition of the masking material (28) upon the top lands (14) of the gear teeth (12). The masking tool includes a flexible back-plate (64) and a plurality of compliant masking segments (62) bonded to and integrated by the flexible back-plate (64). Each of the compliant masking segments (62) define a surface geometry (66) which is substantially complementary to the respective tooth space surface (68). Furthermore, adjacent compliant masking segments (62) define an open-ended channel (70) therebetween. In use, the masking tool (60) is forcibly urged in combination with the precision gear (10) such that the compliant masking segments (62) are disposed in superposed engagement with the tooth space surfaces (68) for prohibiting deposition of the masking material thereupon, and the open-ended channels (70) permit deposition of the masking material (28) on the top lands (14) of the gear teeth (12).