| Patent Number |
Title Of Patent |
Date Issued |
| 5814816 |
System for monitoring surface stress and other conditions in structures |
September 29, 1998 |
| A system for monitoring a structure is built on a printed circuit board (PCB) mounted at the surface of the structure. A piece of single crystal silicon is mounted on the PCB and is in contact with the structure. An infrared source directly illuminates the silicon while an infrared d |
| 5728944 |
Photoelastic stress sensor |
March 17, 1998 |
| A stress detection apparatus is provided. A piece of semiconductor grade, ngle crystal silicon mounted on the material is illuminated by an infrared source with radiation having a wavelength in the range of 800-1100 nanometers. An infrared detector monitors the photoelastic effects of |
| 5693889 |
Method for monitoring surface stress |
December 2, 1997 |
| A piece of single crystal silicon is embedded in a material such that the licon is flush with the surface thereof. The silicon is illuminated with infrared radiation having a wavelength in the range of 800-1100 nanometers. Isochromatic fringe patterns projected from the silicon are m |
| 5433002 |
Fabrication process for complex composite parts |
July 18, 1995 |
| A method for manufacturing a composite part is provided. A polymer material s formed into a shape whose outer surface has a desired part configuration. A base coating is applied to substantially all of the outer surface leaving at least one access to the polymer material. The base coating |
| 5359574 |
Electromagnetically activated compliant wavy-wall |
October 25, 1994 |
| Electromagnets are disposed in an elastomeric coating affixed to a body esed to a fluid. Controllable magnetic forces created by the electromagnets produce a wavy-wall configuration in the surface of the coating which may be static, dynamic, or static in part and dynamic in part, an |
| 5235931 |
Inflatable undersea vehicle system of special utility as a daughter vessel to a mother vessel |
August 17, 1993 |
| The submersible vehicle system of the present invention comprises a unitary ndersea vehicle composed of a rigid hull submersible mated to an inflated auxiliary submersible. Both the rigid hull submersible and the auxiliary submersible may be initially stored aboard a mother vessel. The au |
| 5114104 |
Articulated control surface |
May 19, 1992 |
| An articulated control surface for flight control utilizes a moldable conl surface that is shaped by contracting and elongating shape memory alloys embedded within the control surface. The shape memory alloys contract when heated via an applied electric current and elongate when coo |
| 5050136 |
Super polyelectrolytic communication links |
September 17, 1991 |
| Apparatus and process for providing a communication link between separate submersibles and, in particularly, for providing communication between a launched submersible and a host submersible. A thread of polyelectrolytic material is provided in electrical communication with a launched |
| 4987844 |
System for reducing drag and noise of underwater vehicles |
January 29, 1991 |
| A means and method for simultaneously reducing drag and noise of a high-sd underwater vehicle is provided. Water is admitted through a water intake scoop in the nose of the vehicle and a polymer powder-gas combination is injected into the water stream in the scoop. The water, polyme |
