Telefonaktiebolaget Lm Ericsson (publ)

Kaj Tommy Näsström

Stig A Arvidsson

Carl Rutger Bladh

Annette Malmros, Legal Representative

A sandwich structure is provided that includes a core formed of profiled metal sheet material and a metal face sheet secured to at least one side of the core. Protrusions are provided in a pattern on at least one side of the core and apertures are provided in a pattern in each face sheet. Dimensions of the protrusions and apertures are such that the protrusions extend at least partially through the apertures of the associated face sheet and are secured thereto. A method for producing such a sandwich structure is also provided.

Panel structure and production method

The present invention relates to a method of securing a reliable electrical contact between two adjacent surfaces by means of a contact spring () of a contact spring assembly (). The secure and reliable contact is achieved by providing excellent conditions for maintaining the contact spring fully operable at all times and is accomplished by providing a shelter () for the contact spring () on a carrier () therefore, thereby protecting the contact spring by eliminating the possibility of the contact spring being overloaded and plastically deformed during installation.

Growing community of inventors

Huddinge, Sweden

Kaj Tommy Näsström