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Patent Searching and Data


Title:
MOULD CORE FOR A MOULD FOR PRODUCING HOLLOW CONCRETE BODIES AND A MOULDING DEVICE HAVING SUCH A MOULD CORE
Document Type and Number:
WIPO Patent Application WO/2021/204792
Kind Code:
A3
Abstract:
The present invention relates to a mould core (300) for use on a moulding device (1000) for producing hollow and/or in particular tubular concrete bodies (B), and to a moulding device (1000) comprising such a mould core (300). The mould core (300) comprises a core shell (310) that extends in a longitudinal direction and has a strip-like longitudinal opening extending in a longitudinal direction from one end of the core shell (310) to the other, an expansion device (400) for expanding and/or spreading and/or contracting and/or shrinking the mould core (300), and a sealing element (500) that seals off the longitudinal opening in the core shell (310) and deforms flexibly and/or elastically when the mould core contracts. Arranged on the side of the sealing element (500) that faces the interior of the mould core (300) are one or more guide elements (600A-600E), and the expansion device (400) is set up such that at least one driver portion (490) of the expansion device (400) comes into contact, during the transition from a first shrinking operation to a second, with at least one entrainment portion (603a) of the one or more guide elements (600A-600E) of the sealing element (500) in order to guide the sealing element (500) in the second shrinking operation.

Inventors:
SCHLÜSSELBAUER JOHANN (AT)
SCHLÜSSELBAUER ULRICH (AT)
Application Number:
PCT/EP2021/058924
Publication Date:
January 06, 2022
Filing Date:
April 06, 2021
Export Citation:
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Assignee:
SCHLUESSELBAUER JOHANN (AT)
SCHLUESSELBAUER ULRICH (AT)
International Classes:
B28B21/88
Foreign References:
JP2000084919A2000-03-28
JPS61177811U1986-11-06
JPS6228509U1987-02-20
JPH0650810U1994-07-12
JPH11254415A1999-09-21
JPH01171614U1989-12-05
Attorney, Agent or Firm:
LEOBLU PATENTANWÄLTE ROLINEC WINTER PARTG MBB (DE)
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