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CPC
B28B21/765

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BPERFORMING OPERATIONS TRANSPORTING B28Stoneworking B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL B28B21/00Methods or machines specially adapted for the production of tubular articles

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B28B21/765Top or bottom rings

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing concrete pipes
- Patent number 11,724,417
- Issue date Aug 15, 2023
- Ulrich Schlüsselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Composite pallet for concrete pipe
- Patent number 9,469,053
- Issue date Oct 18, 2016
- Hawkeye Concrete Products Co.
- Claudio Subacchi
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Composite pallets for molding concrete pipe
- Patent number 9,139,333
- Issue date Sep 22, 2015
- Hawkeye Concrete Products Co.
- Claudio Subacchi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Apparatus and method for protecting lined concrete pipe during the...
- Patent number 7,832,703
- Issue date Nov 16, 2010
- Hawkeye Concrete Products Co.
- Jon A. Schmidgall
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Device for applying a release agent to a molding ring for a front c...
- Patent number 7,648,351
- Issue date Jan 19, 2010
- Johann Schluesselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Forming elements from concrete pipe
- Patent number 7,162,783
- Issue date Jan 16, 2007
- Harland D. Couillard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for pulling a molding ring off a neck of a concrete tubul...
- Patent number 6,754,941
- Issue date Jun 29, 2004
- Johann Schlüsselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method and apparatus for removing forming elements from concrete pipe
- Patent number 6,748,636
- Issue date Jun 15, 2004
- Harland D. Couillard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Pipe joint
- Patent number 5,280,972
- Issue date Jan 25, 1994
- Forsheda AB
- Joakim Andersson
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Mold insert for forming precast concrete modules
- Patent number 5,259,586
- Issue date Nov 9, 1993
- Arthur C. Miller
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Gripping device
- Patent number 4,799,724
- Issue date Jan 24, 1989
- Firma Dipl.-Ing. Karl Rekers Maschinenbau
- Karl Rekers
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Concrete manhole
- Patent number 4,592,674
- Issue date Jun 3, 1986
- Michael G. Baliva
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Supporting ring for use in the casting of concrete pipes
- Patent number 4,047,693
- Issue date Sep 13, 1977
- Pedershaab Maskinfabrik A/S
- Bent Melchior Karlsen Holme
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
3584356
- Patent number 3,584,356
- Issue date Jun 15, 1971
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
3201843
- Patent number 3,201,843
- Issue date Aug 24, 1965
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING CONCRETE PIPES
- Publication number 20180297234
- Publication date Oct 18, 2018
- Ulrich Schlüsselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
COMPOSITE PALLET FOR CONCRETE PIPE
- Publication number 20170001334
- Publication date Jan 5, 2017
- Hawkeye Concrete Products Co.
- Claudio SUBACCHI
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
COMPOSITE PALLETS FOR CONCRETE PIPE
- Publication number 20130291766
- Publication date Nov 7, 2013
- Hawkeye Concrete Products Co.
- Claudio SUBACCHI
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
METHOD FOR PRODUCING PREFABRICATED COMPOUND TOWER-SEGMENT UNITS FOR...
- Publication number 20120260591
- Publication date Oct 18, 2012
- Norbert Hölscher
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
APPARATUS AND METHOD FOR PROTECTING LINED CONCRETE PIPE DURING THE...
- Publication number 20100178373
- Publication date Jul 15, 2010
- Hawkeye Concrete Products Co.
- JON A. SCHMIDGALL
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Device for applying a release agent to a molding ring for a front c...
- Publication number 20080124417
- Publication date May 29, 2008
- Johann Schluesselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
ROUND RUBBER CHAMPHERING RING
- Publication number 20080006761
- Publication date Jan 10, 2008
- John Vitale
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Press head assembly for concrete pipe making machine
- Publication number 20050269747
- Publication date Dec 8, 2005
- Otto J. Wuelfing
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Forming elements from concrete pipe
- Publication number 20040187436
- Publication date Sep 30, 2004
- Harland D. Couillard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
METHOD AND APPARATUS FOR REMOVING FORMING ELEMENTS FROM CONCRETE PIPE
- Publication number 20030159263
- Publication date Aug 28, 2003
- Harland D. Couillard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Apparatus for pulling a molding ring off a neck of a concrete tubul...
- Publication number 20020095757
- Publication date Jul 25, 2002
- Johann Schlusselbauer
- B28 - WORKING CEMENT, CLAY, OR STONE

Top or bottom rings

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for producing concrete pipes

Composite pallet for concrete pipe

Composite pallets for molding concrete pipe

Apparatus and method for protecting lined concrete pipe during the...

Device for applying a release agent to a molding ring for a front c...

Forming elements from concrete pipe

Apparatus for pulling a molding ring off a neck of a concrete tubul...

Method and apparatus for removing forming elements from concrete pipe

Pipe joint

Mold insert for forming precast concrete modules

Gripping device

Concrete manhole

Supporting ring for use in the casting of concrete pipes

3584356

3201843

Patents Applicationslast 30 patents

METHOD FOR PRODUCING CONCRETE PIPES

COMPOSITE PALLET FOR CONCRETE PIPE

COMPOSITE PALLETS FOR CONCRETE PIPE

METHOD FOR PRODUCING PREFABRICATED COMPOUND TOWER-SEGMENT UNITS FOR...

APPARATUS AND METHOD FOR PROTECTING LINED CONCRETE PIPE DURING THE...

Device for applying a release agent to a molding ring for a front c...

ROUND RUBBER CHAMPHERING RING

Press head assembly for concrete pipe making machine

Forming elements from concrete pipe

METHOD AND APPARATUS FOR REMOVING FORMING ELEMENTS FROM CONCRETE PIPE

Apparatus for pulling a molding ring off a neck of a concrete tubul...