Patents Assigned to Kobra Formen GmbH
  • Publication number: 20230019683
    Abstract: In a device for producing concrete slabs, a mold lower part is inserted into a frame secured via retaining braces to receiving areas of guiding columns oriented along an insertion direction and having, above the mold lower part, a structural loading device movable along the guiding columns and having, on the side facing the mold lower part, a mold upper part with one or more pressure plates inserted or insertable into one or more recesses of the mold lower part, the structural loading device being connected to the pressure plates via pressure rams. An upper guide element arranged between the structural loading device and the pressure rams interacts with a lower guide element arranged on the retaining brace such that, during the production of concrete slabs, the structural loading device is constantly guided relative to the mold lower part on a plane perpendicular to the insertion direction.
    Type: Application
    Filed: December 15, 2020
    Publication date: January 19, 2023
    Applicant: KOBRA FORMEN GMBH
    Inventor: Holger STICHEL
  • Patent number: 9855676
    Abstract: An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having a pressure plate arrangement having multiple pressure plates, each facing an opening of a mold insert, wherein each of the pressure plates is screwed onto an intermediate plate, wherein the intermediate plate is connected with a punch plate on the upper mold part on the side facing the upper mold part, by way of at least one pressure punch. The intermediate plate is braced against the punch plate, in that at least one bolt that can be screwed on is passed through an accommodation on the intermediate plate, which bolt releasably engages into the punch plate and has a hollow body that encloses the bolt, between the intermediate plate and the punch plate.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: January 2, 2018
    Assignee: KOBRA Formen GmbH
    Inventors: Holger Stichel, Juergen Braungardt
  • Patent number: 9610708
    Abstract: An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having at least one pressure punch for transfer of a force to at least one pressure plate, wherein the pressure plate can be introduced into an opening of a mold insert in a lower mold part in the vertical direction, wherein the lower mold part is surrounded by a frame that has a guide connected with the upper mold part and configured so that, the lower mold part can be tilted from the vertical direction, relative to the upper mold part, during engagement of the pressure plates into the openings of the mold insert.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: April 4, 2017
    Assignee: KOBRA Formen GmbH
    Inventors: Holger Stichel, Juergen Braungardt
  • Publication number: 20160271829
    Abstract: An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having a pressure plate arrangement having multiple pressure plates, each facing an opening of a mold insert, wherein each of the pressure plates is screwed onto an intermediate plate, wherein the intermediate plate is connected with a punch plate on the upper mold part on the side facing the upper mold part, by way of at least one pressure punch. The intermediate plate is braced against the punch plate, in that at least one bolt that can be screwed on is passed through an accommodation on the intermediate plate, which bolt releasably engages into the punch plate and has a hollow body that encloses the bolt, between the intermediate plate and the punch plate.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Applicant: KOBRA Formen GmbH
    Inventors: Holger STICHEL, Juergen BRAUNGARDT
  • Publication number: 20160271828
    Abstract: An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having at least one pressure punch for transfer of a force to at least one pressure plate, wherein the pressure plate can be introduced into an opening of a mold insert in a lower mold part in the vertical direction, wherein the lower mold part is surrounded by a frame that has a guide connected with the upper mold part and configured so that, the lower mold part can be tilted from the vertical direction, relative to the upper mold part, during engagement of the pressure plates into the openings of the mold insert.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Applicant: KOBRA Formen GmbH
    Inventors: Holger STICHEL, Juergen BRAUNGARDT
  • Patent number: 9370873
    Abstract: The invention relates to a mold for producing molded concrete blocks with multiple molding cavities which are separated from one another by intersecting intermediate wall panels. The aim of the invention is an advantageous design of the intersection points of the intermediate wall panels with the additional lateral support of slot edges.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: June 21, 2016
    Assignee: KOBRA Formen GmbH
    Inventors: Holger Stichel, Joerg Rasbieler
  • Publication number: 20130234003
    Abstract: The invention relates to a mold for producing molded concrete blocks with multiple molding cavities which are separated from one another by intersecting intermediate wall panels. The aim of the invention is an advantageous design of the intersection points of the intermediate wall panels with the additional lateral support of slot edges.
    Type: Application
    Filed: November 9, 2011
    Publication date: September 12, 2013
    Applicant: KOBRA FORMEN GMBH
    Inventors: Holger Stichel, Joerg Rasbieler
  • Patent number: 8016584
    Abstract: A mold for the production of molded concrete bricks has mold recess bodies guided in openings in side walls of a mold insert, which openings are adapted to the contours of the recess bodies, in order to produce recesses in a molded concrete brick produced using this mold. The recesses reach all the way to the underside of a brick, and are supported on one or more sections of the edging of the opening. The wall thickness of the mold insert side wall can have a greater wall thickness in the region of the recess bodies. Preferably, the mold includes multiple mold inserts, and recess bodies that are similar in terms of position and movement direction are coupled mechanically with one another in their movement, and can be displaced together via common drive devices.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: September 13, 2011
    Assignee: KOBRA Formen GmbH
    Inventors: Rudolf Braungardt, Holger Stichel
  • Patent number: 7293977
    Abstract: The aim of the invention is to produce concrete moulded blocks, using a mould which is subjected to a vibrating process. Said mould comprises a frame (FR) and a moulding insert (FE) which is maintained therein. A device comprising receiving elements arranged in said moulding insert (FE) for receiving a displacement sensor (SE) is provided, in addition to an arrangement comprising said device and at least one sensor. The invention discloses advantageous embodiments and arrangements of said receiving elements. The arrangement of the sensor (SE) on the moulding insert (FE) is particularly advantageous and provides an additional displacement variable for relative displacement between the moulding insert and the frame by combining the displacement variables of a sensor (SE) on the moulding insert (FE) and a sensor (SE) on the frame (FR).
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: November 13, 2007
    Assignee: KOBRA Formen GmbH
    Inventors: Rudolf Braungardt, Erwin Schmucker
  • Patent number: 7172404
    Abstract: The invention relates to the production of multi-layered concrete moulded bodies in a moulding machine comprising a moulding insert having a plurality of mould cavities. Relief structures are arranged in the lateral walls of the mould cavities and are dimensioned in such a way that projections formed on the moulded body when the filled concrete material is compacted engage in the relief structures, thereby creating sufficient retaining force for compensating the net weight of the moulded body and enabling the moulded bodied to be extracted from the mould cavities as a result of additional demoulding forces and causing elastic deformation of the projections without any material being cut off from the projections.
    Type: Grant
    Filed: August 30, 2003
    Date of Patent: February 6, 2007
    Assignee: Kobra Formen GmbH
    Inventors: Rudolf Braungardt, Erwin Schmucker