Samuel S Descoteaux

6467339, Oct 22, 2002

Jul 13, 2000

09/615902

Samuel S. Descoteaux - South Glastonbury CT
Troy A. Braman - Torrington CT

United Technologies Corporation - Hartford CT

G01M 1500

73119R, 73116

The invention is a method for allocating shroud or airseal segments among various positions in a turbomachinery case when the segments to be allocated differ in radial dimension or thickness and when the requirement for segment thickness varies around the circumference of the case. According to the inventive method, segment thicknesses are preliminarily assigned to positions on the case without regard for whether or not the thickness of each assigned segment satisfies the thickness requirement of its assigned position. Each thickness is then compared to the requirement of its assigned position and thicknesses that fail to satisfy the minimum thickness requirement of their assigned positions are consigned to a pool of noncompliant thickness values, thereby vacating zero or more positions Members of the pool are then systematically evaluated for suitability in the vacated positions. Ideally, the evaluation considers the seals in order of diminishing thickness and progresses in descending order through the thickness requirements. The inventive method quickly identifies an optimum distribution of segments among the various positions in the case.

61098434, Aug 29, 2000

Jul 2, 1999

9/347346

Samuel S. Descoteaux - South Glastonbury CT

United Technologies Corporation - Hartford CT

B23P 600

409134

A shield assembly 98 is disclosed which has one or more shield elements 102, 104, 106 which block, during machining of a seal member 70 for a rotary machine 10, seal particles from entering a vane cluster 58. Various construction details are developed which increase the effectiveness of the shield assembly. In one embodiment, the shield assembly has an upper shield element 102 having a U-shaped cross sectional shape which fits over a stator assembly 28 that includes the seal member.

60107464, Jan 4, 2000

Feb 3, 1998

9/017965

Samuel S. Descoteaux - South Glastonbury CT
Jean-Paul I. Albert - Wolcott CT

United Technologies Corporation - Hartford CT

B05D 126

427142

The invention is a method for repairing a protectively coated, locally damaged turbomachinery vane without removing the vane from its parent turbomachinery module. The method includes applying a diffusible coating precursor to the damaged region of the vane and diffusing the coating precursor into the vane in the presence of a nonreactive atmosphere. The nonreactive atmosphere is confined to a chamber that contains the damaged vane, the chamber being bounded in part by the turbomachinery module itself. A conventional stress relief machine is used to heat only the damaged region of the vane to a temperature sufficient to promote diffusion of the precursor into the vane. The method uses equipment and supplies that are routinely available or easily fabricated from common, inexpensive materials. Use of the method avoids the expense and delay of removing the vane from its parent module.

62023020, Mar 20, 2001

Jul 2, 1999

9/347088

Samuel S. Descoteaux - South Glastonbury CT

United Technologies Corporation - Hartford CT

B23P 1500

298892

A method for forming a stator assembly 28 of a rotary machine 10 which includes masking the stator assembly during a machining operation on a seal member 70 is disclosed. Various detailed steps of the method are disclosed which decrease the cost of the method. In one embodiment of the method, the method includes disposing a shield assembly 98 about the stator assembly 28 to such an extent that individual members of the stator assembly need not be disassembled for cleaning.