Patents by Inventor Hans-Herlof Hardtke
Hans-Herlof Hardtke 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: 8251338Abstract: A constant bearer having a fastening part, a load-bearing part and a spring system which is arranged between the fastening part and the load-bearing part for generating a carrying force which remains constant over a carrying travel of the load-bearing part with respect to the fastening part, where the spring system has a suspension system for absorbing the load, a compensation device for compensating for changing spring forces of the suspension system over the carrying travel, and a prestressing device for setting a prestressing force of the suspension system.Type: GrantFiled: December 14, 2007Date of Patent: August 28, 2012Assignee: LISEGA AktiengesellschaftInventors: Hans-Herlof Hardtke, Heinz-Wilhelm Lange
-
Patent number: 8152126Abstract: The invention relates to a constant bearer for moving loads, especially pipelines and similar, comprising a fastening part, a load-bearing part, and a spring system located between the fastening part and the load-bearing part for generating a constant bearing force, where the spring system displays a main spring assembly absorbing the load and a compensating device to compensate for changing spring forces of the main spring assembly.Type: GrantFiled: January 19, 2011Date of Patent: April 10, 2012Assignee: Lisega AktiengesellschaftInventor: Hans-Herlof Hardtke
-
Patent number: 7971846Abstract: The invention relates to a constant bearer for moving loads, especially pipelines and similar, comprising a fastening part, a load-bearing part, and a spring system located between the fastening part and the load-bearing part for generating a constant bearing force, where the spring system displays a main spring assembly absorbing the load and a compensating device to compensate for changing spring forces of the main spring assembly.Type: GrantFiled: September 21, 2006Date of Patent: July 5, 2011Assignee: Lisega AktiensellschaftInventor: Hans-Herlof Hardtke
-
Publication number: 20110114816Abstract: The invention relates to a constant bearer for moving loads, especially pipelines and similar, comprising a fastening part, a load-bearing part, and a spring system located between the fastening part and the load-bearing part for generating a constant bearing force, where the spring system displays a main spring assembly absorbing the load and a compensating device to compensate for changing spring forces of the main spring assembly.Type: ApplicationFiled: January 19, 2011Publication date: May 19, 2011Applicant: LISEGA AKTIENGESELLSCHAFTInventor: Hans-Herlof Hardtke
-
Publication number: 20100108852Abstract: The invention relates to a constant bearer (1) for loads which are displaced, in particular for pipelines and the like, having a fastening part (2), a load-bearing part (3) and a spring system (4) which is arranged between the fastening part (2) and the load-bearing part (3) for generating a carrying force (T) which remains constant over a carrying travel of the load-bearing part with respect to the fastening part, where the spring system (4) has a suspension system (5) for absorbing the load, a compensation device (6) for compensating for changing spring forces of the suspension system (5) over the carrying travel (tw), and a prestressing device (7) for setting a prestressing force (V) of the suspension system (5).Type: ApplicationFiled: December 14, 2007Publication date: May 6, 2010Applicant: LISEGA AktiengesellschaftInventors: Hans-Herlof Hardtke, Heinz-Wilhelm Lange
-
Publication number: 20090065675Abstract: The invention relates to a constant bearer for moving loads, especially pipelines and similar, comprising a fastening part, a load-bearing part, and a spring system located between the fastening part and the load-bearing part for generating a constant bearing force, where the spring system displays a main spring assembly absorbing the load and a compensating device to compensate for changing spring forces of the main spring assembly.Type: ApplicationFiled: September 21, 2006Publication date: March 12, 2009Applicant: LISEGA AKTIENGESELLSCHAFTInventor: Hans-Herlof Hardtke
-
Patent number: 7320448Abstract: The invention relates to a pipe clip 1 for mounting pipes and the like, comprising a suspendable upper part 2 and a U-shaped lower part 3, the ends of which can be connected to upper part 2 by means of fastening elements and in which a pipe is mounted. Lower part 3 is manufactured in one piece by deformation of a creep-resistant flat steel bar or strip of sheet metal, where lower part 3 displays a cross-section with at least one wider, plane lateral surface 12, which is located on the inside and on which the pipe to be mounted rests, and upper part 2 displays a holding-down device 4 for holding down the pipe mounted in lower part 3.Type: GrantFiled: March 4, 2005Date of Patent: January 22, 2008Assignee: Lisega AktiengesellschaftInventor: Hans-Herlof Hardtke
-
Patent number: 7021855Abstract: In order to also be able to use a clamping device with structural components and girders with different dimensions or inclinations, a clamping device is proposed that comprises a tension element, to which a force can be applied, and a bearing element, which interacts with the tension element and is provided with a bearing surface that can rest against a girder or structural component. In order to ensure parallel contact of the bearing surface of the bearing element on a flange of the girder or a bearing surface of the structural component, the clamping device according to the invention further has means for coupling or connecting the tension element to the bearing element, which under the influence of the tension force or clamping force, enables the independent rotation and/or inclination of the bearing element relative to the tension element under the influence of the applied tension force, until the bearing surface of the bearing element is essentially parallel to the girder or structural component.Type: GrantFiled: April 12, 2002Date of Patent: April 4, 2006Assignee: Lisega GmbHInventors: Hans-Herlof Hardtke, Jorg Bernert
-
Publication number: 20050285389Abstract: The invention relates to a pipe clip 1 for mounting pipes and the like, comprising a suspendable upper part 2 and a U-shaped lower part 3, the ends of which can be connected to upper part 2 by means of fastening elements and in which a pipe is mounted. Lower part 3 is manufactured in one piece by deformation of a creep-resistant flat steel bar or strip of sheet metal, where lower part 3 displays a cross-section with at least one wider, plane lateral surface 12, which is located on the inside and on which the pipe to be mounted rests, and upper part 2 displays a holding-down device 4 for holding down the pipe mounted in lower part 3.Type: ApplicationFiled: March 4, 2005Publication date: December 29, 2005Inventor: Hans-Herlof Hardtke
-
Publication number: 20020182003Abstract: In order to also be able to use a clamping device with structural components and girders with different dimensions or inclinations, a clamping device is proposed that comprises a tension element, to which a force can be applied, and a bearing element, which interacts with the tension element and is provided with a bearing surface that can rest against a girder or structural component. In order to ensure parallel contact of the bearing surface of the bearing element on a flange of the girder or a bearing surface of the structural component, the clamping device according to the invention further has means for coupling or connecting the tension element to the bearing element, which, under the influence of the tension force or clamping force, enable the independent rotation and/or inclination of the bearing element relative to the tension element under the influence of the applied tension force, until the bearing surface of the bearing element is essentially parallel to the girder or structural component.Type: ApplicationFiled: April 12, 2002Publication date: December 5, 2002Inventors: Hans-Herlof Hardtke, Jorg Bernert
-
Patent number: 5018700Abstract: A suspension system for supporting pipes under generally constant tension comprises a main spring system including a main spring located between a suspension portion and a load-bearing portion for applying spring-biasing forces to the suspension portion. An additional spring system includes an additional spring which compensates for variations in the spring-biasing forces of the main spring through associated cam and cam followers. An auxiliary hydraulically operated mechanism is provided for applying a supplementary predetermined biasing force to increase or decrease the biasing forces of the main springs in response to detected value/parameters.Type: GrantFiled: May 15, 1989Date of Patent: May 28, 1991Assignee: Lisega GmbHInventor: Hans-Herlof Hardtke
-
Patent number: 5018607Abstract: A hydraulic dashpot for supporting pipes or similar loads comprises a cylinder having a piston mounted for displacement therein, the piston setting-off the cylinder chambers which are in fluid communication with a fluid storage chamber, and the piston having an inner chamber housing a valve seat body of a main control valve. The main control valve includes a pair of piston-type valve members reciprocally carried by the valve seat body and biased by a spring. The inner chamber and valve seat body have opposing peripheral surfaces and one of these surfaces is provided with a groove running the length thereof and at each end being merged with axial grooves which places the axial opposite ends of the inner chamber in fluid communication with each other to prevent blockage/locking-up during dashpot operation.Type: GrantFiled: May 15, 1989Date of Patent: May 28, 1991Assignee: Lisega GmbHInventors: Hans-Herlof Hardtke, Jorg Bernert
-
Patent number: 4930732Abstract: A yoke pipe clip for supporting pipes comprises a pair of generally parallel longitudinal plates in side-by-side spaced relationship, a pair of generally transverse plates disposed one at each opposite end of the longitudinal plates, a suspension bracket positioned between the opposite ends of the longitudinal plates, a yoke, and interlocked slot and lug connections for securing the suspension bracket to the longitudinal plates and also for securing the longitudinal and transverse plates to each other.Type: GrantFiled: May 15, 1989Date of Patent: June 5, 1990Assignee: Lisega GmbHInventor: Hans-Herlof Hardtke
-
Patent number: 4613119Abstract: A suspension device for suspendingly supporting loads under a generally constant spring-biasing support force defined by two relatively movable portions, a first of the portions being secured to a support and a second of the portions being secured to a load to be suspendingly supported thereby, a main spring for biasingly mounting the first and second portions relative to each other, the second portion being an elongated member having an upper end portion, at least one compensatory spring adjacent the upper end portion of the elongated member, a pivoted lever between the one spring and the elongated member upper end portion, and a cam and cam follower carried by the lever and its elongated member upper end portion which compensates the tension and/or compression forces of the main spring as the cam and cam follower operate relative to each other.Type: GrantFiled: August 5, 1985Date of Patent: September 23, 1986Assignee: LISEGA Kraftwerkstechnik GmbHInventor: Hans-Herlof Hardtke