Inventor

Karl Schlecht

Inventor

Filderstadt, DE

Overview

24→

Patents

1976–2009

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F04Bprimary

F04BPositive-displacement machines for liquids20%

Y10TTechnical subjects covered by former us classification17%

E04GScaffolding15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

E21DShafts7%

B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors5%

B66CCranes5%

F23GCremation furnaces5%

B63BShips or other waterborne vessels2%

B64FGround or aircraft-carrier-deck installations specially adapted for use in connection with aircraft2%

PatentTitleYear

7,478,834'Movable concrete pump comprising a distribution boom'2009 6,338,615'Pipe switch for two-cylinder thick-material pump'2002 6,158,313'Process for conveying thick matter containing preshredded scrap metal or similar solids'2000 6,068,025'Delivery line for cement'2000 5,988,028'Process for conveying thick matter containing preshredded scrap metal or similar solids'1999 5,823,218'Large manipulator, especially for self-propelled concrete pumps, and method for operating it'1998 5,746,247'Slide valve for a twin-cylinder pump for viscous fluids'1998 5,720,069'Arrangement for surface treatment, especially the cleaning of the surfaces of large objects'1998 5,640,996'Large manipulator, especially for self-propelled concrete pumps'1997 5,605,174'Device for conveying thick substances containing a great deal of solid material'1997 5,578,752'Process for measuring the flow rate of thick matter pumps'1996 5,535,780'Concrete-distribution rig'1996 5,522,677'Travelling concreting device'1996 5,302,094'Tube switch for a double-cylinder sludge pump'1994 5,183,356'Method and device for distributing pumpable thick matter into several delivery pipes'1993 5,127,429'Method and device for distributing pumpable thick matter into several delivery pipes'1992 5,037,275'Pipe junction switch for two-cylinder thick-material pump'1991 4,900,191'Method for removal of broken ground'1990 4,893,992'Two-cylinder thick-material pump'1990 4,653,990'Positive double-piston displacement pump conveying pasteous material'1987 4,418,713'Concrete pump tractor trailer assembly'1983 4,382,752'Twin-cylinder pump, in particular for pumping thick liquids'1983 3,982,857'Support means for movable connector in concrete pump arrangement'1976 3,947,194'Apparatus for damping the pressure increase of hydrostatic drives'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1991Patents assigned to SCHLECHT KARL (6)· patent assignee history

1976Patents assigned to PUTZMEISTER INTERHOLDING GMBH (1)· patent assignee history

1976Based in Bernhausen, DE· patent location history

1983–1993Based in Stuttgart, DE· patent location history

1990–1998Patents assigned to PUTZMEISTER MASCHF (11)· patent assignee history

1994–2009Based in Filderstadt, DE· patent location history

1998–2002Patents assigned to PUTZMEISTER AG (5)· patent assignee history

2009Patents assigned to PUTZMEISTER CONCRETE PUMPS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PUTZMEISTER MASCHF	11	1990–1998
SCHLECHT KARLself	6	1976–1991
PUTZMEISTER AG	5	1998–2002
PUTZMEISTER CONCRETE PUMPS	1	2009
PUTZMEISTER INTERHOLDING GMBH	1	1976

Locations

Location	Patents	Span
Filderstadt, DE	14	1994–2009
Stuttgart, DE	8	1983–1993
Bernhausen, DE	2	1976