Inventor

KEEFE ANDREW C

US48 patents

⚠️ This page may combine multiple inventors who share the name “KEEFE ANDREW C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KEEFE ANDREW C

HRL LAB LLC

Negative stiffness system with variable preload adjustment

Torsion springs with changeable stiffness

Torsion springs with changeable stiffness

Enhanced damping materials using negative stiffness inserts

Actively tunable lightweight acoustic barrier materials

Isolation system and method

Assembly with negative torsional stiffness

Method of manufacturing a curved semiconductor die

Isolation system and method

CW LIDAR wind velocity sensor for operation on a stratospheric vehicle

Isolation system and method

Isolation system and method

Torsion springs with changeable stiffness

Curved semiconductor and method of forming the same

Hybrid focal-plane array and method of manufacturing the same

GM GLOBAL TECH OPERATIONS INC

Compartment access system with active material component and method for controlling access to an interior compartment

Panels having active material based fold lines

Discrete active seal assemblies

Active material actuator with modulated movement

Active seal assemblies for sound isolation

Active material actuated flow trips

Reversible attachment mechanisms

Programmable shims for manufacturing and assembly lines

Energy harvesting system for a vehicle

BROWNE ALAN L

Active material based seal assemblies

Reconfigurable bi-stable device

Active material based bodies for varying frictional force levels at the interface between two surfaces

Shape memory alloy heat engines and energy harvesting systems

Shape memory alloy heat engines and energy harvesting systems

Composite bi-stable device

Method of starting and operating a shape memory alloy heat engine

Active interface controls having bi-stable actuation and intrinsic sensing capability

Energy harvesting system

KEEFE ANDREW C

Actively controlled texturing systems

Surface texturing using foldable structures and active material actuation

Surface texturing using engineered structures

MCKNIGHT GEOFFREY P

Actively tunable lightweight acoustic barrier materials

Methods for varying seal force in active seal assemblies for doors

ALEXANDER PAUL W

Vehicle energy harvesting device having a continuous loop of shape memory alloy

Energy harvesting system for a vehicle

GM GLOBAL TECH OPERATIONS LLC

Method of testing a shape memory alloy element, and a validation system therefor

Slack compensator

GM GOBAL TECHNOLOGY OPERATIONS

Discrete active seal assemblies

GEN MOTORS CORP

Adaptive head light and lens assemblies

HERRERA GUILLERMO A

Methods of determining mid-stroke positions of active material actuated loads

BARVOSA-CARTER WILLIAM

Reversible attachment mechanisms process

BOEING CO

Reflector system for a lighting assembly

HENRY CHRISTOPHER P

Morphing panel structure