Richard E Swarts

US Patent:

47262273, Feb 23, 1988

Filed:

Oct 22, 1984

Appl. No.:

6/663525

Inventors:

E. Marston Moffatt - Glastonbury CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G01P 328

US Classification:

73505

Abstract:

An angular velocity sensor utilizing the Coriolis effect on a fluid jet employs a metal diaphragm impulse jet pump with no valves to reduce temperature sensitivity. The pump anvil, the nozzle block and the sensor plug may all be fabricated of the same material to further reduce temperature sensitivity. The thickness of the sensing elements is selected to reduce temperature sensitivity still further.

US Patent:

46617531, Apr 28, 1987

Filed:

Jan 15, 1985

Appl. No.:

6/692071

Inventors:

Gregory J. McBrien - Portland CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G05B 1700
H04B 328

US Classification:

318689

Abstract:

A differential torquer having at least one bifilar winding mounted on the torquer is disclosed. The bifilar winding has opposing polarities and the torquer is particularly well suited for use in reducing the temperature sensitivity of torquer servo loops.

US Patent:

45922322, Jun 3, 1986

Filed:

May 7, 1984

Appl. No.:

6/608001

Inventors:

E. Marston Moffatt - Glastonbury CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G01P 326

US Classification:

73505

Abstract:

The present invention relates to a sensor for sensing orthogonal components of angular velocity of rotation of the sensor about any axis in a plane perpendicular to a reference jet axis within the sensor, wherein a fluid jet is deflected relative to two pairs of electrically resistive, temperature sensitive elements in response to rotation of the sensor, wherein each pair of elements forms the sensing branch of a bridge circuit, the jet deflection causing differential cooling and bridge unbalance which is an indication of the deflection of the fluid jet from the reference jet axis which is in turn an indication of the rate and direction of angular rotation, wherein each pair of elements is disposed in a plane perpendicular to the reference jet axis, each pair sensing an orthogonal component of angular velocity of rotation.

US Patent:

47167637, Jan 5, 1988

Filed:

Oct 22, 1984

Appl. No.:

6/663519

Inventors:

E. Marston Moffatt - Glastonbury CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G01P 326
G01P 344

US Classification:

73505

Abstract:

An angular velocity sensor utilizing the Coriolis effect on a fluid jet employs increased spacing between the sensing elements to increase the scale factor and to reduce flow disturbances. A metal diaphragm pump is utilized to improve the ability to control the flow rate. Flow disturbances are further reduced by using a single, symmetrical central flowhole, eliminating curtain holes, and providing only two discharge paths oriented 180. degree. apart.

US Patent:

49300423, May 29, 1990

Filed:

Feb 28, 1989

Appl. No.:

7/317240

Inventors:

Walter J. Wiegand - Glastonbury CT
James L. Swindal - East Hampton CT
Richard E. Swarts - Simsbury CT
Robert H. Bullis - Avon CT
Mario T. Lopiccolo - Southington CT
Daniel H. Grantham - Glastonbury CT
Arthur G. Foyt - Glastonbury CT

Assignee:

United Technologies - Hartford CT

International Classification:

H01G 700
G01P 1508

US Classification:

361280

Abstract:

A micromachined three-plate capacitive accelerometer incorporates hinges attached to top and bottom surfaces of the proof mass that are symmetric about X and Y axes and also about diagonal axes; passageways for gas film damping in the fixed members that do not affect the capacitance to any significant degree; and provision for independently selecting two of the parameters sensitivity, capacitance and maximum acceleration.

US Patent:

47032871, Oct 27, 1987

Filed:

Aug 22, 1985

Appl. No.:

6/768308

Inventors:

Joseph T. Fournier - Glastonbury CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G02F 105
G02B 508

US Classification:

332 751

Abstract:

A piezoelectric phase modulator for a fiber optic sensor is disclosed. The disclosed modulator is capable of relatively large amplitude mechanical vibrations, i. e. , having a large converse piezoelectric effect, while at the same time having a relatively predictable and well-behaved direct piezoelectric effect. This result is accomplished by bonding a relatively active piezoelectric material, such as PZT, to a relatively stable piezoelectric material, such as quartz. An optical fiber may then be bonded to the relatively stable material, or to a structure attached thereto, as part of a fiber optic sensor loop. Excitation of the relatively active piezoelectric material will then produce a mechanical vibration in the relatively stable material and in the attached fiber comparable in magnitude to that experienced by the active material. Several embodiments of the invention are shown which are illustrative of devices which may be made according to the teachings disclosed.

US Patent:

46604170, Apr 28, 1987

Filed:

Oct 22, 1984

Appl. No.:

6/663518

Inventors:

E. Marston Moffatt - Glastonbury CT
Richard E. Swarts - Simsbury CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G01P 328
F04B 4304

US Classification:

73505

Abstract:

A metal diaphragm impulse jet pump with no valves is disclosed. The pump may be used in an angular velocity sensor utilizing the Coriolis effect on a fluid jet. A magnetic core is mounted within an anvil and a drive coil is wound around the core. The drive coil may be driven sinusoidally and the diaphragm responds with a vibratory motion in like manner. Sensing poles are provided in quadrature with the drive coils and may be used to sense the vibratory motion and thereby control the fluid flow.

US Patent:

47508000, Jun 14, 1988

Filed:

Nov 4, 1986

Appl. No.:

6/926943

Inventors:

Joseph T. Fournier - Glastonbury CT
Richard E. Swarts - Simsbury CT
Mario T. Lopiccolo - Southington CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G02B 612
G02B 610
H01L 2302
H01J 500

US Classification:

350 9611

Abstract:

An integrated optic IO device chip with anisotropic thermal expansion properties is packaged in a material enclosure by first bonding the chip to a substrate having anisotropic thermal expansion properties substantially equivalent to those of the IO device and substrate thickness substantially greater than that of the IO device, and bonding the substrate to the enclosure.