Inventor
Karl-Heinz Helmstädter
Inventor
Heidelberg, DE
Overview
Patents· 39 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Fprimary
B41FPrinting machines or presses57%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables20%
B41PIndexing scheme relating to printing, lining machines, typewriters, and to stamps5%
F16DCouplings for transmitting rotation5%
Y10TTechnical subjects covered by former us classification5%
B62HCycle stands2%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges2%
F16KValves2%
G03GElectrography2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
8,042,465'Method and device for switching between single-sided or straight printing mode and perfecting or recto/verso printing mode in a sheet-processing machine and reversing drum having the device'20117,849,794'Device for transporting sheets in straight printing or perfecting operation by way of tongs grippers'20107,574,958'Printing material sheet gripper and method for producing the sheet gripper'20097,484,610'Apparatus for the actuation of clamping elements that can be controlled remotely'20097,481,429'Method for the cyclic conveyance of sheets through a printing machine'20097,412,925'Device for changing over gripper control in a turning configuration of a sheet-processing machine'20087,412,927'Printing machine with gripper retraction mechanism for safe operation of the printing machine'20087,325,493'Sheet-fed rotary printing press having a three-drum reversing device and method of transporting a sheet through a three-drum reversing device'20087,320,281'Method of varying a drum profile of a vario drum and vario drum for implementing the method'20087,287,750'Machine for processing printing material sheets, in particular sheet-fed printing press, and method of operating the machine'20077,219,889'Sheet-processing machine with a pneumatic sheet-guiding device'20077,207,265'Devices for turning sheets in a sheet-fed rotary printing machine'20077,150,456'Sheet transport drum for a machine processing printing-material sheets'20067,111,843'Sheet-processing machine having a suction air producing device'20067,000,540'Method of operating a machine processing printing material sheets'20067,000,917'Sheet-guiding device in a sheet-processing machine'20066,877,430'Gripper device in a sheet-processing machine'20056,857,364'Clutch for drive elements of a printing machine'20056,851,361'Reversing or turning assembly of a sheet-processing machine'20056,739,252'Method and apparatus for reversing sheet material in sheet-processing machines'20046,722,276'Devices for turning sheets in a sheet-fed rotary printing machine'20046,695,114'Multi-disk clutch'20046,691,611'Method and apparatus for guiding and transferring a sheet in a printing machine'20046,662,722'Machine for processing sheets having spring mounted throttled air nozzles'20036,663,550'Smoothing device for flat printing materials'20036,659,446'Guiding and carrying elements with throttled blowing air'20036,640,707'Device for guiding sheets in a sheet processing apparatus'20036,622,623'Method for conveying sheets in a printing machine and a device for carrying out the method'20036,619,199'Printing machine with torque compensation'20036,612,236'Sheet transport cylinder'20036,612,237'Method of operating a sheet-fed rotary printing machine, and sheet-fed rotary printing machine'20036,612,235'Sheet guiding device'20036,561,508'Device and method for transferring a sheet'20036,105,499'Transport drum in rotary printing presses'20006,038,976'Suction-air control device'20005,988,065'Device for controlling suction air or vacuum and method of actuating the device'19995,979,318'Method and apparatus for smear-free guidance of a printed sheet on a sheet-guiding cylinder of a printing press'19995,588,773'Device for connecting a machine element to a structural member movable about its longitudinal axis so that the machine element and the structural member are secured against relative rotation'19965,335,597'Method and device for starting and stopping a sheet turning operation and for format adjusting during sheet transport through a printing press'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2011Patents assigned to HEIDELBERGER DRUCKMASCH AG (39)· patent assignee history
1994Based in Sinsheim-Adersbach, DE· patent location history
1996–2003Based in Sinsheim, DE· patent location history
2003–2010Based in Heidelberg, DE· patent location history
2011Based in Kaiserslautern, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HEIDELBERGER DRUCKMASCH AG | 39 | 1994–2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Heidelberg, DE | 31 | 2003–2010 |
| Sinsheim, DE | 6 | 1996–2003 |
| Kaiserslautern, DE | 1 | 2011 |
| Sinsheim-Adersbach, DE | 1 | 1994 |