JOHN C SCHMERTZ
Engineers in Pittsburgh, PA

2003013, Jul 24, 2003

Jan 22, 2002

10/051858

John Schmertz - Pittsburgh PA, US

F04D029/18

415/070000

A nutating drive with hermetic seal which includes a housing with an internal wall and a nutating bar passing through an opening in the wall. A flexible tubular diaphragm seal surrounds the bar and is sealed at one end to the wall about the wall opening and is sealed at its other end to the bar for providing a hermetic seal for the wall opening. A universal joint support mechanism connects the bar to the housing for gimbaled non-axial rotational support of the bar in the housing. An axially rotatable rotor is mounted for axial rotation in the housing and the bar is pivotally connected at one end to the rotor at a position offset from the rotor axis for imparting nutational movement to the gimbaled bar about a geometric center of nutation with axial rotation of the rotor. The tubular diaphragm has a conical configuration tapered from a maximum diameter at the wall and to a minimal diameter at the bar end and the tubular seal encloses the geometric center of the bar. The tubular diaphragm seal may have a bellows configuration. A torsion tube which is very flexible in torsion is coaxially received over the bar with one end of the flexible torsion tube circumferentially sealed and secured to the bar and the other end of the torsion tube circumferentially sealed and secured to the minimal diameter end of the tubular diaphragm seal.

4908775, Mar 13, 1990

Feb 24, 1987

7/018379

Sam S. Palusamy - Murrysville PA
John C. Schmertz - Pittsburgh PA
Dali Li - Monroeville PA
John N. Chirigos - Churchill PA
Charles B. Bond - Plum Borough PA
Chuang Y. Yang - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1700, G06F 1574

364508

The present invention is a cycle monitoring system and method that acquires, logs and analyzes analog and/or digital signals from component sensors in a process control plant such as a nuclear power plant. The system continuously monitors the sensors and records steady-state and transient phenomena. Compression of the data is performed to reduce storage load. The compression ratio for transient data is driven by a threshold indicating a measurement signficant to stress determination. Transient data is retained at a higher sampling rate, so that the parameters of transient such as the maximum value can be determined for stress analysis. The stress analysis determines pressure and thermal stresses which are used to calculate a usage factor which indicates the stress age and thus the remaining life of a component. The system provides estimates of fatigue accumulation associated with selected locations of critical power plant components. Measurements of plant process and response parameters are used to provide data for calculation of fatigue accumulation.

4886348, Dec 12, 1989

Oct 26, 1988

7/262847

John C. Schmertz - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

G02B 510, G21C 1708

350622

The total transmissibility optical system or lens is an assembly of curved members or mirrors arranged such that a beam of radiation will reflect through the apparatus and come to a focus on an opposite side. An inner member, comprised of a pair of conical reflectors joined at their respective bases, is disposed within an outer member such that their axes are parallel to the radiation beam. The outer member is comprised of a first inner reflective surface in the shape of a hollow segment of a paraboloid of revolution and a second inner reflective surface in the shape of a hollow truncated cone. The two inner reflective surfaces of the outer member are also joined at their respective bases. The mirrors are made of a highly polished metal which will reflect any type of radiation beam, such as infrared radiation as in a night vision device. The lens can be used in harsh environments, such as an irradiated environment, since the lens will not be affected thereby as will a glass lens.

5008140, Apr 16, 1991

Jun 1, 1989

7/359540

John C. Schmertz - Pittsburgh PA

B32B 328

428179

A flexible biaxially corrugated sheet material is formed from a plurality of identical trapezium segments which are arranged in a plurality of long strips a single segment wide. Adjacent strips are mirror images of each other and connected along adjoining sides with the angles of the four corners of adjacent segments being alternately less than 360. degree. and greater than 360. degree. along the length of a strip such that the sheet material has an undulating configuration, and is inherently curved and cannot lie in a flat plane.

2003014, Aug 7, 2003

Apr 3, 2003

10/364700

John Schmertz - Pittsburgh PA, US

F04D011/00

415/070000

A nutating drive comprising a housing with a rotor mounted for axial rotation in the housing and an elongated nutating bar retained at one end thereof in a rotary bearing which is connected to the rotor via a drive coupling at a position offset from the rotor axis for imparting nutational movement to the bar about a geometric center of nutation with axial rotation of the rotor. The drive coupling which connects the nutating bar bearing to the rotor is comprised of a flexible sheet support having outer edges secured to the rotor which permits limited pivotal movement of the bar bearing relative to the rotor. This flexible sheet support may be provided in the form of a single flexible disk or as multiple flexible support strips. In either case, support is provided with at least one undulation extending in the radial direction to enhance pivotal flexibility.

6120037, Sep 19, 2000

May 11, 1998

9/075636

John C. Schmertz - Pittsburgh PA

F16J 1502

277647

A resilient static seal for sealing the closure on a pressure vessel. The seal is provided with a curved cross section with the convex side of the curve exposed to the higher pressure which may exist within the interior or exterior of the pressure vessel. The seal is also provided with opposed inwardly curved side edges which engage the side walls and a bottom wall of a vessel closure seal groove in which the continuous seal is seated.

4935195, Jun 19, 1990

Aug 29, 1988

7/237537

Sam S. Palusamy - Murrysville PA
John C. Schmertz - Pittsburgh PA
David H. Roarty - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 1700

376249

A system for analyzing containment integrity of a containment system includes data storage for inspection data and characteristic data and a data evaluation processor for evaluating the inspection data. A data acquisition system is used for periodically obtaining wall thicknesses of selected components in the containment system. After data validation, the actual wall thicknesses are stored as the inspection data in the data storage. The data evaluation processor analyzes the present pipe wall integrity in light of stress calculated from the characteristic data including operational conditions and material properties. In addition, the data evaluation processor analyzes the trend in change of wall thickness to forecast future wall thicknesses.

4753772, Jun 28, 1988

Feb 21, 1986

6/832492

John C. Schmertz - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

G21C 900

376285

A tension loaded energy dissipating support member includes multiple successively longer metal straps all connected at each end to an end connector with the longer straps, and preferably the shortest strap, bowing outward laterally such that as the tensile load increases, the straps, beginning with the shortest, successively plastically deform to dissipate shock energy. The initial bowing, type of material, and relative dimensions of the straps can be varied to obtain the desired load supporting and energy dissipating characteristics.