Patents Assigned to Industrie Pirelli
  • Device for replacing the filter of a gas mask in a polluted atmosphere without any contamination risk
    Patent number: 4932399
    Abstract: A device is provided for preventing the inflow of air into a gas mask during the substitution of its filter in the presence of a contaminated atmosphere. The device includes a small plate having a central stem which passes through the support for a check valve admitting air to the respiratory tract of the user and a spring which pushes the small plate against the diaphragm of the check valve when the filter is removed from the mask to prevent inflow of air into the mask.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: June 12, 1990
    Assignees: Industrie Pirelli, Ministero Della Difesa
    Inventors: Giulio Cappa, Romano Moscatelli
  • Building block for floors and walls of a building
    Patent number: 4432177
    Abstract: A building block for constructing a floor or wall has a plurality of tile blocks bonded to a single synthetic resin base. Pieces of acoustical insulating material are dispersed in the resinous base and a strip or sheet substantially impermeable to the resin is placed between the resin base and tile blocks bridging the interface between edges of adjacent tile blocks to regulate flow of the base material into interface between the tile blocks.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: February 21, 1984
    Assignee: Industrie Pirelli
    Inventors: Claudio Amesso, Paolo Donaggio
  • Tire
    Patent number: D270343
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: August 30, 1983
    Assignee: Industrie Pirelli
    Inventor: Renato Caretta