Hrl Laboratories, LLC

The Boeing Company

Gm Global Technolgoy Operations, Inc.

Other

Sloan Patrick Smith

Geoffrey P McKnight

Christopher Paul Henry

Andrew C Keefe

Christopher Burton Churchill

David W Shahan

Jacob John Mikulsky

Casey J Sennott

Adam E Sorensen

Nancy L Johnson

Alan L Browne

Christopher Stephen Roper

Xiujie Gao

Tobias A Schaedler

Blaine Knight Rawdon

Jacob Michael Hundley

Guillermo A Herrera

Zak C Eckel

Sophia Shu Yang

Eric C Clough

Eddie Kwon

Russell P Durrett

Darrin Michael Hansen

Jason Scott Damazo

John Rubrecht Lowell

Peter P Andruskiewicz, Iv

Randall C Schubert

Joanna A Kolodziejska

Michael Scott Cameron

Jie Jiang

Geoffrey P Mcknight

Christopher B Henry

Christine M Lihn

Joseph Creecy

Gavin Chang

Robert Walling

Christopher Swanhart

Jeffrey Bowles

Scott M Biesboer

Joanna Kolodziejska

An isolation system and method are disclosed. The isolation system includes a beam that includes a first end and a second end. The isolation system may include at least one clamping block comprising first elastomeric material, and the first end may be coupled with the first elastomeric material by the at least one clamping block. An end condition of the buckling beam may be varied based on compression stiffening of the first elastomeric material.

Isolation system and method

In at least one embodiment, a rotational spring is provided with adjustable stiffness and includes at least one beam arranged about an axis between an input tuning port and an output port, wherein the input tuning port is configured to change an effective bending length of at least one beam so as to change a shear stiffness with respect to the input tuning port and the output port.

Torsion springs with changeable stiffness

A multi-axis isolator configured to isolate a payload from unwanted vibrations and shocks includes a housing, at least one pair of radial isolators in the housing, and an axial isolator in the housing. Each radial isolator includes an elastomer dome, a chamber at least partially defined by the elastomer dome, and a fluid in the chamber. The multi-axis isolator also includes a fluid track placing the chambers of the radial isolators in fluid communication with each other. The axial isolator includes an elastomer dome, a backpressure membrane, a primary chamber, a backpressure chamber, a fluid in the primary and backpressure chambers, a conduit placing the primary chamber in fluid communication with the backpressure chamber. The multi-axis isolator also includes a shaft configured to be connected to the payload. The pair of radial isolators and the axial isolator are coupled to the shaft.

Multi-degree of freedom vibration isolator

A temperature-following layer may be applied to a surface of components within an internal combustion engine. The temperature-following layer follows the temperature swing of adjacent gases (for example, in a combustion chamber). The temperature-following layer may be applied directly to a substrate, or the temperature-following layer may be an outer layer of a multi-layer thermal barrier coating. The multi-layer thermal barrier coating may include, for example, an insulating layer, a sealing layer bonded to the insulating layer, and a porous temperature-following layer disposed on the sealing layer. The sealing layer is substantially non-permeable and configured to seal against the insulating layer.

Thermal barrier coating with temperature-following layer

An isolator configured to isolate a payload from unwanted vibrations and shocks. The isolator includes a housing having a first end and a second end opposite the first end, a primary chamber defined in the housing, a backpressure chamber defined in the housing, a conduit placing the primary chamber in fluid communication with the backpressure chamber, a backpressure membrane in the housing proximate the first end, an elastomer dome in the housing proximate the second end, and a shaft connected to the elastomer dome. The primary chamber and the backpressure chamber are between the backpressure membrane and the elastomer dome. The shaft is configured to be connected to the payload.

Fluid and elastomer vibration isolator

A watercraft includes a hull having inner and outer surfaces and at least one collapsible strake coupled to the hull. The collapsible strake includes a movable skin hingedly coupled to the hull. The collapsible strake also includes a dampening element and a negative stiffness element each extending from an inner surface of the movable skin to the outer surface of the hull. The movable skin is configured to rotate between an uncollapsed configuration having a first stiffness and a collapsed configuration having a second stiffness greater than the first stiffness.

Suspension-based collapsible strakes for watercraft and watercraft including the same

Ignition-quenching systems comprise an ignition-quenching cover configured to quench an ignition event in a combustible environment triggered by an ignition source associated with a fastener stack. The ignition-quenching cover comprises a porous body that is gas permeable and that has pores sized to quench ignition in the combustible environment. The ignition-quenching cover further comprises a cover attachment feature configured to mate with a fastener attachment feature of the fastener stack. The ignition-quenching cover is configured to cover the fastener stack, which may be associated with a potential ignition source that produces an ignition event in the combustible environment. The porous body may include one or more porous elements that may be formed of various polymeric, mesh, or fabric materials. The ignition-quenching cover may comprise a non-porous frame that is bonded to the porous body and that defines the cover attachment feature.

Ignition-quenching systems, apparatuses, and methods

An adjustable negative stiffness mechanism is disclosed. The adjustable negative stiffness mechanism includes a central shaft, an outer annular member extending around the central shaft, at least two negative stiffness elements extending between the central shaft and the annular member, and an actuator coupled to the negative stiffness elements. Each of the negative stiffness elements has an inner end coupled to the central shaft and an outer end engaging the annular member. The actuator is configured to compress and expand the negative stiffness elements to adjust a negative stiffness mechanical response exhibited by the negative stiffness elements.

Adjustable negative stiffness mechanisms

A negative stiffness torsional spring. A plurality of spokes secured between a hub and an outer cylinder assembly are preloaded in compression. As the hub is rotated, the stiffness of the torsional spring is negative over a range of angles.

Assembly with negative torsional stiffness

A nonlinear mechanical element including a buckling column and hard stops. In one embodiment when the nonlinear mechanical element is subjected to an increasing compressive load, the buckling column buckles at a critical load, resulting in reduced stiffness past the critical load. One or more lateral hard stops may be provided adjacent to the buckling column to prevent the buckling deformation from exceeding a certain extent, and axial hard stops may be provided to shift the load path away from the buckling column when a certain amount of compressive displacement has been reached.

Buckling column load switch spring

Growing community of inventors

Calabasas, CA, United States of America

Sloan Patrick Smith