Patents by Inventor Jean-Paul Pietrzak

Jean-Paul Pietrzak 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: 7942289
    Abstract: The invention relates to a device for closing an opening, particularly a man hole. The inventive device comprises a frame (4) and a cover (6) which is articulated to the frame (4) around a first axis (X-X) by means of a hinge (14). The device also comprises a locking means (16) having a locked configuration, whereby the cover is held open in a first position, and an unlocked configuration, whereby said cover (6) is disposed in a second position in which it can be pivoted around the axis (X-X). The aforementioned hinge (14) is designed such that, while resting on the frame, the cover (6) can pivot around a second horizontal axis (Y-Y). Moreover, the cover is pivoted around said second axis (Y-Y) in order to move same between the two positions. The invention is suitable for cast iron man holes.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 17, 2011
    Assignee: Saint-Gobain Pam
    Inventors: Jean-Claude Hauer, Jean-Paul Pietrzak
  • Publication number: 20090080972
    Abstract: The invention relates to a device for closing an opening, particularly a man hole. The inventive device comprises a frame (4) and a cover (6) which is articulated to the frame (4) around a first axis (X-X) by means of a hinge (14). The device also comprises a locking means (16) having a locked configuration, whereby the cover is held open in a first position, and an unlocked configuration, whereby said cover (6) is disposed in a second position in which it can be pivoted around the axis (X-X). The aforementioned hinge (14) is designed such that, while resting on the frame, the cover (6) can pivot around a second horizontal axis (Y-Y). Moreover, the cover is pivoted around said second axis (Y-Y) in order to move same between the two positions. The invention is suitable for cast iron man holes.
    Type: Application
    Filed: September 26, 2008
    Publication date: March 26, 2009
    Applicant: Saint Gobain PAM
    Inventors: Jean-Claude HAUER, Jean-Paul PIETRZAK
  • Patent number: 7448512
    Abstract: A device for closing an opening, particularly a man hole. The device includes a frame and a cover articulated to the frame around a first axis by a hinge. The device also includes a locking mechanism having a locked configuration, whereby the cover is held open in a first position, and an unlocked configuration, whereby the cover is disposed in a second position in which the cover can be pivoted around the first axis. The hinge is designed such that, while resting on the frame, the cover can pivot around a second horizontal axis. Moreover, the cover is pivoted around the second axis to move between the two positions. The device is suitable, e.g., for cast iron man holes.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: November 11, 2008
    Assignee: Saint-Gobain Pam
    Inventors: Jean-Claude Hauer, Jean-Paul Pietrzak
  • Publication number: 20050175409
    Abstract: A device for closing an opening, particularly a man hole. The device includes a frame and a cover articulated to the frame around a first axis by a hinge. The device also includes a locking mechanism having a locked configuration, whereby the cover is held open in a first position, and an unlocked configuration, whereby the cover is disposed in a second position in which the cover can be pivoted around the first axis. The hinge is designed such that, while resting on the frame, the cover can pivot around a second horizontal axis. Moreover, the cover is pivoted around the second axis to move between the two positions. The device is suitable, e.g., for cast iron man holes.
    Type: Application
    Filed: May 20, 2003
    Publication date: August 11, 2005
    Inventors: Jean-Claude Hauer, Jean-Paul Pietrzak
  • Patent number: 6676332
    Abstract: This highway device includes a frame and an element (14) for covering the frame, the frame (12) including a peripheral border with two walls delimiting a groove and the covering element being equipped with a projecting peripheral lip (32) engaging in the groove in the frame-covering position. The covering element (14) includes at least one ramp (44) extending between the lip (32) and the internal surface of the element, the ramp or ramps being intended to bear on the end edge of the peripheral border of the frame and thus guiding the covering element during the displacement of the latter with respect to the frame, under the action of a force exerted on the element in a zone opposite the ramp or ramps (44).
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: January 13, 2004
    Assignee: Saint Gobain Pam
    Inventors: Jean-Claude Hauer, Jean-Paul Pietrzak