Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11891987 | Piston pump and method for operating a piston pump | Andreas Lehmann | 2024-02-06 |
| 9046086 | Method for feeding pasty masses and pump device for feeding pasty masses | Stefan Schwing | 2015-06-02 |
| 6871667 | Distribution device for thick matter, especially for concrete | Horst Heckmann | 2005-03-29 |
| 6463958 | Distributing device for thick substances, especially concrete | — | 2002-10-15 |
| 6450779 | Two-cylinder thick matter pump | — | 2002-09-17 |
| 6206662 | Two-cylinder slurry pump | — | 2001-03-27 |
| 5513911 | Vehicle mixer | — | 1996-05-07 |
| 5380174 | Pump for thick matter having delivery cylinders, in particular a two-cylinder concrete pump | — | 1995-01-10 |
| 5353684 | Hydraulic control device for working cylinders with unequal piston speeds | — | 1994-10-11 |
| 5325761 | Switching arrangement for controlling the speed of hydraulic drives | — | 1994-07-05 |
| 5316453 | Slurry pump with discharge cylinders, especially two-cylinder concrete pump | — | 1994-05-31 |
| 5263828 | Two-cylinder thick matter pump having a piston storage | Wolfgang Merten | 1993-11-23 |
| 4951806 | Double belt conveyor band | Gerhard Schwing | 1990-08-28 |
| 4852467 | Spool valve for concrete pumps | — | 1989-08-01 |
| 4799573 | Adjustable personnel platform | Andrej Simnovec, Bernhard Meinken | 1989-01-24 |
| 4776450 | Twin-belt band conveyor | Dipl.-Kfm. G. Schwing | 1988-10-11 |
| RE32719 | Multi-way valves for pumps for conveying heavy flowable materials | — | 1988-07-26 |
| RE32657 | Two-cylinder pump for heavy flowable materials, such as concrete | — | 1988-04-26 |
| 4681022 | Two-cylinder viscous liquid pump with pipe switch | — | 1987-07-21 |
| 4556370 | Twin cylinder pumps, more specially for concrete | — | 1985-12-03 |
| 4472118 | Multi-way valves for pumps for conveying heavy flowable materials | — | 1984-09-18 |
| 4465441 | Two-cylinder pump for heavy flowable materials, such as concrete | — | 1984-08-14 |
| 4373225 | Piping valve with a housing for the transfer of a wiper insertable in conduits that supply pressurized viscous material, preferably concrete | Karl-Ernst v.Eckardstein, Werner Fiala | 1983-02-15 |
| 4373875 | Viscous material pump, in particular for the conveyance of concrete | — | 1983-02-15 |
| 4343598 | Viscous material pump, particularly for concrete | Gerhard Schwing | 1982-08-10 |