Patents by Inventor Carl Rutger Bladh

Carl Rutger Bladh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7442880
    Abstract: The present invention relates to a method of securing a reliable electrical contact between two adjacent surfaces by means of a contact spring (30) of a contact spring assembly (1). 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 (12) for the contact spring (30) on a carrier (10) therefore, thereby protecting the contact spring by eliminating the possibility of the contact spring being overloaded and plastically deformed during installation.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: October 28, 2008
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Kaj Tommy Näsström, Stig Arvidsson, Carl Rutger Bladh, Annette Malmros, legal representative, Fini Lennart Malmros
  • Patent number: 3957222
    Abstract: The invention relates to safety belts of the wind-up type for vehicles. In these safety belts the belt strap, connected to a shaft rotatably mounted in a casing and tending to be reeled up on the shaft by the action of a spiral spring member tightened by the unwinding of the strap from the shaft when the strap is pulled out and laid across the chest of the strapped user, exerts an often unpleasant pressure on the chest of said user. The invention provides a means adapted to counterbalance this pressure when the strap approaches and is kept in the position of use across the chest of the user, but not to interfere with the retractive or reeling-up force exerted by the spiral spring member on the strap in positions outside said position of use.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: May 18, 1976
    Inventor: Carl Rutger Bladh