Errol P Eernisse
Engineers in Salt Lake City, UT

5012151, Apr 30, 1991

Sep 12, 1989

7/406168

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT

Halliburton Company - Duncan OK

H01L 4108

310346

A resonator assembly comprises a rigid support and a rigid crystal which are rigidly connected along linear segments which have one or more matched thermal characteristics. In a particular embodiment, a thermally matched resonator assembly comprises a Z-cut quartz crystal support, a quartz crystal resonator having an active region and including a crystalline structure oriented relative to X-, Y- and Z-crystallographic axes, which X- and Y-crystallographic axes define an X-Y crystallographic plane; and a rigid connector structure for rigidly connecting the resonator to the support along a segment of a line of a plane parallel to or including the X-Y crystallographic plane, which segment extends across a surface of the resonator and is spaced from the center of the active region of the resonator. A method of mounting a crystal which has the aforementioned crystalline structure to a Z-cut quartz support comprises: selecting a chord on a face of the crystal, which chord is a segment of a line of an X-Y plane intersecting the face of the crystal away from the center of an active region of the crystal; and bonding the crystal of the Z-cut quartz support along the length of the chord.

6131462, Oct 17, 2000

Dec 18, 1998

9/213133

Errol P. EerNisse - Salt Lake City UT
Lon J. Perry - West Jordan UT
Roger W. Ward - Park City UT
Robert B. Wiggins - Holliday UT

Delaware Capital Formation, Inc. - Wilmington DE

G01L 1100, G01L 700

73702

A transducer pressure crystal having improved thermal coupling with the environment external to a pressure housing in which the crystal is disposed. A cylindrical major portion of the side wall of the pressure crystal is located immediately adjacent an inner wall of a chamber within the pressure housing, separated therefrom only by dimensional tolerances sufficient to ensure that the crystal is surrounded by pressure-transmitting fluid exposed to pressure from the external environment. The thermal time constant of the transducer for external temperature changes is significantly decreased. The time constant of the transducer for temperature changes in the pressure-transmitting fluid produced by rapid pressure changes is similarly decreased. A thin, electrically insulating element may optionally be disposed between the crystal side wall and the inner wall to preclude electrical grounding of the crystal to the housing. The electrically insulating element may comprise a discrete film, such as a high temperature plastic, or an insulating layer on the inner wall of the pressure housing.

2012018, Jul 19, 2012

Jan 13, 2012

13/350577

Derek Wayne Puccio - Murray UT, US
Errol P. EerNisse - Salt Lake City UT, US

DELAWARE CAPITAL FORMATION, INC. - Wilmington DE

E21B 47/06, H01L 41/22

310338, 29 2535

Arrays of resonator sensors include an active wafer array comprising a plurality of active wafers, a first end cap array coupled to a first side of the active wafer array, and a second end cap array coupled to a second side of the active wafer array. Thickness shear mode resonator sensors may include an active wafer coupled to a first end cap and a second end cap. Methods of forming a plurality of resonator sensors include forming a plurality of active wafer locations and separating the active wafer locations to form a plurality of discrete resonator sensors. Thickness shear mode resonator sensors may be produced by such methods.

4754646, Jul 5, 1988

Jan 30, 1987

7/009144

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT

Quartztronics, Inc. - Salt Lake City UT

G01L 1100

73702

A quartz resonator pressure transducer includes a generally disc-shaped resonator section adapted to vibrate in response to an oscillatory signal, a housing having sidewalls which generally circumscribe the resonator section and extend in opposite directions generally normal to the plane of the resonator section, and a web, thinner than the resonator section, joining the housing to the perimeter of the resonator section to define grooves between the sidewalls of the housing and the resonator section on the top and bottom sides of the section.

4802370, Feb 7, 1989

Dec 29, 1986

6/947022

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT

Halliburton Company - Duncan OK

G01F 1100, G01L 1904

73702

A sensor apparatus includes a pressure sensor, a reference device and a temperature sensor collocated within a common environment. The reference device and the temperature sensor are constructed to have temperature response times matched to the temperature response time of the pressure sensor to compensate for temperature gradients produced either by external heating or by pressure-volume heating.

4837475, Jun 6, 1989

Oct 2, 1987

7/103670

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT

Quartztronics, Inc. - Salt Lake City UT

H01L 4104, H01L 4108, H01L 4122

310312

Crystal resonator with low acceleration sensitivity includes a piezoelectric quartz crystal, support structure for holding the crystal and a signal source for causing the crystal to resonate with an active region of vibration. The resonator is modified, if need be, to control (generally reduce) the gamma vector which is a measure of the acceleration senstivity. This may be done by adding mass, removing mass, or both adding and removing mass, all in order to move or change the shape of the active region of vibration and thereby reduce the gamma vector.

5168191, Dec 1, 1992

Sep 17, 1990

7/583140

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT
O. Lew Wood - Murray UT

Quartztronics, Inc. - Salt Lake City UT

H01L 4108

310311

In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.

5022130, Jun 11, 1991

Dec 26, 1989

7/456554

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT
O. Lew Wood - Murray UT

Quartztronics, Inc. - Salt Lake City UT

H01L 4122

29 2535

In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.

4935658, Jun 19, 1990

Jul 13, 1988

7/218282

Errol P. EerNisse - Salt Lake City UT
Roger W. Ward - Park City UT
O. Lew Wood - Murray UT

Quartztronics, Inc. - Salt Lake City UT

H01L 4108

310312

In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.

5030876, Jul 9, 1991

Mar 24, 1989

7/328320

Errol P. EerNisse - Salt Lake City UT

Quartztronics, Inc. - Salt Lake City UT

H01L 4108

310353

Structure for mounting a disc-shaped crystal, having a top and bottom surface, of a crystal resonator includes four attachment pads affixed to the crystal on the bottom surface near the perimeter thereof, four base pads affixed to a base surface, and four generally elongate parallel support elements, each extending from a different one of the base pads to a different one of the attachment pads to support the crystal. The support elements are generally longitudinally rigid and laterally elastic so that lateral movement of the crystal may take place without torque being applied to either the pads or the crystal. In other words, when the crystal is moved sideways, the plane of the crystal remains generally parallel with the previous plane occupied by the crystal.