Other

The Boeing Company

Hughes Aircraft Company

Nancy J Condon

John P Stafford

Florian J Zukas

Edward K Hoffman

A fuse/support assembly for attachment to an electrical bus includes a base plate having a substrate made of an insulator, a fastener bore extending through the substrate, and an electrically conductive path on the substrate. There is additionally an external connector structure. A fuse is supported on the substrate and has a first end in electrical communication with the external connector and a second end in electrical communication with the electrically conductive path.

Electrical fuse/support assembly

A face sheet is bonded to a porous core by contacting adhesive to the porous core at the bonding face, placing a screen stripping sheet overlying the adhesive, and pressing on the stripping sheet while heating the core and adhesive. The adhesive is thereby forced against the exposed portions of the cell walls at the bonding face and into the interstices of the stripping sheet. The excess adhesive not contacting the exposed cell walls is removed by cooling the stripping sheet and adhesive, and peeling the stripping sheet and excess adhesive from the core. A face sheet is bonded to the porous core with the remaining adhesive that adhered to the exposed cell walls.

Preparation of adhesively bonded sandwich structures

A resin system includes 100 parts by weight of an epoxy resin, from about 1/2 to about 10 parts by weight of an imidazole curing agent, and, optionally, an elastomeric material such as a rubber. The resin system without the elastomer is particularly useful as the matrix of a composite material or a potting compound, and the resin system with the elastomer is particularly useful as an adhesive. The resin system is cured at a low temperature and exhibits essentially no dimensional instability upon curing, and then is preferably post-cured at a higher temperature. The post-cured resin system has a softening temperature substantially higher than the normal post-cure temperature and has good mechanical properties.

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Redondo Beach, CA, United States of America

Nancy J Condon