Abstract: An interchangeable fitting system generally involving a fitting, the fitting including a male connector and a female connector, the male and female connectors each having a forward portion and an aft portion, the male connector having a primary sealing structure and a secondary sealing structure, the female connector having a primary sealing structure and a secondary sealing structure, and the male primary sealing structure being interfaceable with the female primary sealing structure, and the male secondary sealing structure being interfaceable with the female secondary sealing structure.

Abstract: An interchangeable fitting system generally involving a fitting, the fitting including a male connector and a female connector, the male and female connectors each having a forward portion and an aft portion, the male connector being interfaceable with a plurality of non-system female connectors, and the female connector being interfaceable with a plurality of non-system male connectors, the male connector having a primary sealing structure and a secondary sealing structure, the female connector having a primary sealing structure and a secondary sealing structure, and the male primary sealing structure being interfaceable with the female primary sealing structure, and the male secondary sealing structure being interfaceable with the female secondary sealing structure.

Abstract: A tooling fixture that holds one or more electronic devices. The fixture has one or more cavities formed in the top surface of a substrate. Each cavity has a pair of spring fingers integrally formed in the substrate. The spring fingers bias the electronic device into a pair of locator edges of the cavity, insuring a repeatable accurate placement of the device. Forming the spring fingers within the substrate eliminates external parts and thus reduces the cost of producing the tool. Additionally, the integrally formed spring fingers allow minimal spacing between cavities and increase the number of devices that can be loaded onto a fixture.

Abstract: A method for temporarily marking a surface whose distance from a light beam source can substantially vary, without requiring focusing or refocusing of the light beam, commences with the step of coating a portion of the surface with a light reactant, color-forming chemical solution. The solution is soluble in a liquid solvent that is nonreactive with the surface. The coated portion of the surface is exposed to a collimated, non-focused laser beam exhibiting an airy disk pattern having central bright spot, the exposure occurring for a period of time that enables the central bright spot to expose the coating and to manifest a color change at points of incidence. The bright spot exhibits a diameter that does not exceed a predetermined diameter within an expected distance variations between the source of the laser beam and the surface.