Other

Toho Tenax Co., Ltd.

Musashino Tuko Co., Ltd.

Satoshi Saito

Isamu Ide

Yoshihiro Endoh

Shigehisa Ishihara

Hiroyasu Ogawa

Hideo Getto

Yoshiro Tochio

Hideo Konishi

Kazunori Taniguchi

Hiroshi Kuwabara

Shiro Kokura

Masaki Hiraide

A phenol resin-impregnated sheet formed by impregnating a porous resin sheet with a phenol resin having a degree of cure of from 70% to 95% is arranged on and lamininated to the surface of a carbon fiber-reinforced thermosetting resin sheet. The thickness of the phenol resin impregnated sheet is between 0.01 mm and 1.0 mm. A very even, strong and water-proof wood reinforcing material is obtained. The wood reinforcing material is intergrated and cured on the surface of the wood material by the phenol resin-impregnated sheet to reinforce wood material (single board or bonded board) to form a reinforced wood material. The wood reinforcing material adheres suitably with the wood material and does not cause environmental contamination.

Reinforcing material for wood and reinforced wood

Carbon fiber prepeg for wood reinforcement, wooden sheet laminated therewith, wood reinforcing composite comprising carbon fibers and the wooden sheet, and carbon fiber reinforced wood

A bobbin case for use in a transformer of the double-insulated type comprises an insulating member of tube-like shape, a partition wall disposed substantially normal to the axis of the insulating member so that the inner space of said insulating member is divided into two recesses for receiving primary and secondary winding assemblies, respectively, from the opposite directions along the axis of said insulating member, and a pair of insulating rims which extend from the outer end surfaces of the insulating member at the side of the recess for receiving the primary winding assembly. The pair of insulating rims are formed such that they are capable of being bent inwardly along the outer end surfaces so as to obtain a creeping distance between said primary winding and a core inserted into center holes in said winding assemblies. By using the bobbin case, the insertion of the primary and secondary winding assemblies can easily and efficiently be carried out. A bobbin case according to another aspect of the invention is provided integrally with protecting legs for soldering portions between connected pins and terminal portions of the winding assemblies. The protecting legs are also utilized in hanging a transformer having the bobbin case.

Double insulated transformer and bobbin case thereof

Growing community of inventors

Nagano, Japan

Satoshi Saito