Carrier Corporation

Rosemount Aerospace Limited

Other

John Carl Christenson

David Patrick Potasek

Marcus Allen Childress

Roger Alan Backman

Randy Phillips

Dave Holmquist

Bruce H Satterlund

Marc A Childress

A stress-sensitive device includes a substrate having a first surface with a cavity defined therein and a three-dimensional deformable material extending along the first surface and into the cavity. The three-dimensional deformable material has an electrical characteristic responsive to deformation. A method of forming a three-dimensional stress-sensitive device includes providing a substrate having a first surface and a second surface opposite the first surface, forming a cavity in the substrate, wherein the cavity is open to the first surface, depositing a sacrificial layer in the cavity, depositing a deformable material on the sacrificial layer, and removing at least a portion of the sacrificial layer to form an interstitial space between the deformable material and the substrate in the cavity.

Three-dimensional stress-sensitive device

A gas detection device is provided. The device includes a substrate and a dielectric material applied to the substrate. A sensor material is applied to the dielectric film. The sensor material has a bottom, a side, and a top surface. An electrode material is at least partially applied to the dielectric film and at least partially applied to a portion of the side of the sensor material and a portion of the top surface of the sensor material to pin a portion of the sensor material to the dielectric material. The electrode material forms a vapor barrier upon the sensor material to facilitate preventing delamination between the sensor material and the electrode material over portions of the sensor material where the sensor material is not pinned to the dielectric material.

Gas detection device and method of manufacturing the same

An isolated sensor and method of isolating a sensor are provided. The isolated sensor includes a mounting portion, a sensor portion disposed adjacent to the mounting portion, and at least one pedestal connecting a mounting portion to a sensor portion.

Isolated sensor and method of isolating a sensor

A gas detection device is provided having a substrate. A sensing element is coupled to the substrate and constructed and arranged to sense a target gas. A top surface is positioned on the sensing element opposite the substrate. A dopant is disposed within the sensing element. The dopant enhances the ability of the sensing element to sense the target gas. An electric field is applied to the dopant to constrain the dopant at or near the top surface of the sensing element.

System and method for mobile ion surface trapping in a gas detection device

A microelectromechanical systems die including a thermally conductive substrate including an outer surface, a plurality of low mass sensing structures disposed within the thermally conductive substrate to form a plurality of inter-structure spaces therebetween, each of the plurality of low mass sensing structures include a sensing structure proximal top surface, a sensing structure distal top surface, and a sensing structure width dimension.

MEMS die with sensing structures

A microelectromechanical systems die including a thermally conductive substrate, at least one insulator film disposed on the thermally conductive substrate, a sensor material disposed on the at least one insulator film, and a heater circumferentially disposed around the sensor material.

Gas detector with a thermally uniform MEMS die

Spring set configurations that include an advantageous combination of spring geometries are disclosed. Spring elements having curved and straight sections, orientation of spring element anchor points with respect to the common radius, orientation of spring element segments with respect to a specific axis, balance of the length of spring elements about the common radius, and mass balance about the common radius can be used to mitigate unwanted out of plane motion. The spring set provides planar motion while reducing undesired out of plane motion making MEMS devices substantially insensitive to the process-induced etch angle variations of the spring elements. The spring set can be used in a MEMS gyro device which maintains the desired resonant modes and consistently low quadrature error even with process variations in manufacturing causing undesirable etch angles.

MEMS gyros with quadrature reducing springs

A MEMS pressure sensor may be manufactured to include a backing substrate having a diaphragm backing portion and a pedestal portion. A diaphragm substrate may be manufactured to include a pedestal portion and a diaphragm that is mounted to the diaphragm backing portion of the backing substrate to form a stress isolated MEMS die. The pedestal portions of the backing and diaphragm substrates form a pedestal of the stress isolated MEMS die. The pedestal is configured for isolating the diaphragm from stresses including packaging and mounting stress imparted on the stress isolated MEMS die.

Stress isolated MEMS structures and methods of manufacture

A method and apparatus for creating a controlled environment about a pile submerged in a body of water in order to prevent marine infestation or further marine infestation, the apparatus in process comprising a tubular jacket installed about the submerged pile exposed to water, and introducing a marine grade foam between the tubular jacket and the pile thereby displacing any water between the tubular jacket and the pile, the foam upon setting, forms a rigid strata between the tubular jacket and the submerged pile thereby denying the surface of the pile exposure to water.

Method and apparatus for protective encapsulation of structural members

A method and apparatus to determine whether or not wrapping of submerged timber or wood piling is efficacious in preventing infestation of the submerged timber or wood which includes a self-contained test kit which permits the testing of the wrapping of the submerged timber or wood pilings to determine whether or not infestation from marine microorganisms or marine borers is continuing despite the wrapping. A sample of the alleged stagnate water between the wrapping and the piling is taken for testing for oxygen content, temperature, and ph, without denigrating the integrity of the wrapping.

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Prior Lake, MN, United States of America

John Carl Christenson