Patents by Inventor Marc Hartel

Marc Hartel 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: 6039420
    Abstract: A frame composed of horizontal and vertical frame members that form front and back frames, the frames being joined at their corners using depth struts. The invention achieves a simple construction by designing the horizontal and vertical frame members as extruded sections with continuous integral or molded-in fastening grooves and screw sockets, by designing the depth struts as angle sections whose sides together form a right angle and by using fastening screws to screw the frame members meeting at the corners to the sides of the depth struts.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: March 21, 2000
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Horst Besserer, Marc Hartel, Jurgen Zachrai
  • Patent number: 5899545
    Abstract: The invention pertains to a frame for a switchgear cabinet. The frame has horizontal and vertical frame members and depth struts; open sides of the frame can be closed by wall elements and at least one door. Mounting a door is simplified in that the depth members have extensions which project beyond the horizontal and vertical frame members at the front and/or back end of the frame and which have with vertically directed holes for hinge pins or closing bolts.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: May 4, 1999
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Horst Besserer, Marc Hartel, Jurgen Zachrai
  • Patent number: 5897276
    Abstract: A U-shaped clip-on slide nut with two parallel sliding limbs provided with notch elements and capable of being clipped onto an undercut ridge. One sliding limb has a bore and the other limb is provided with a threaded bore aligned with the bore and accommodating a clamping screw. The invention facilitates fixing of a component on the ridge in that the bore is a blind bore, the clamping screw is a countersunk screw, and at least one sliding limb also has a screw receptacle for a securing screw.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: April 27, 1999
    Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. KG
    Inventor: Marc Hartel
  • Patent number: 5772296
    Abstract: The invention relates to a switchgear cabinet with a frame which is composed of frame members and which can be closed by a cover plate, side panels, a rear wall, and a door. To fit both optical and functional elements easily to the corners of the frame, the horizontal depth struts are designed as sections open on the outside, and the cover plate and/or side panels have chamfers which at least partly overlap the outside of the sections so that the chamfer and the outer side form a holder into which a plug-in rod of a corner piece can be inserted.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: June 30, 1998
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Marc Hartel, Jurgen Zachrai
  • Patent number: 5584406
    Abstract: A rack frame with vertical supports, which can be partially closed by wall elements, wherein the wall elements are embodied as panel elements with beveled edges and are fastened or can be fastened by fasteners to respectively two adjoining supports. The wall elements can be fastened on the supports of the rack frame in a simple manner at an arbitrary height. The two supports each have a fastening bar extending parallel to the wall element, on which U-shaped fastening elements can be adjusted and fixed in place. The wall elements can be bolted together with the fastening elements, and the edges of the wall elements can be inserted into elongated slots of the supports.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: December 17, 1996
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Horst Besserer, Klaus-Dieter Bovermann, Marc Hartel
  • Patent number: 5513759
    Abstract: A rack frame having two front and two rear supports, which can be closed off by means of wall elements, except for the front, and into which structural units can be built. Holders, on which the structural units can be fastened, are attachable to both front supports. Wall elements can be simply attached at arbitrary heights. Structural units with different installation depths can be attached so that they terminate flush with each other either in the front or the rear. This is accomplished by perpendicular longitudinal slots for receiving beveled edges of the wall elements that are formed in the exteriors of the rear supports. The rear supports have fastening strips, which extend spaced apart and parallel to the wall elements. Adjustable U-shaped fastening elements can be attached to the fastening strips, and are used to fix the wall elements.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: May 7, 1996
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Horst Besserer, Klaus-Dieter Bovermann, Marc Hartel
  • Patent number: D387035
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: December 2, 1997
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Marc Hartel, Jurgen Zachrai, Horst Besserer
  • Patent number: D391232
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: February 24, 1998
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventors: Marc Hartel, Jurgen Zachrai, Horst Besserer
  • Patent number: D411985
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: July 13, 1999
    Assignee: Rittal-Werk Rudolf Loh GmbH & Co. KG
    Inventor: Marc Hartel