Concrete-block-making machine

Details Concrete-block-making machine Concrete-block-making machine

2007-10-09

2007-10-09

Gupta, Yogendra N (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to feed measured charge of fluent...

C425S253000, C425S260000, C425S447000, C425S448000

Reexamination Certificate

active

11050068

ABSTRACT:
The invention relates to a concrete-block-making machine having a part which is displaceable via a linear drive, the linear drive comprising a drive unit and a linear guide for guide rollers, the drive unit comprising at least one linear motor and the linear guide comprising at least one guide rod for the guide rollers, the at least one guide rod and the guide rollers movable relative thereto being hardened, and guide rollers and guide rod being arranged with slight play relative to one another.

REFERENCES:
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patent: 3822794 (1974-07-01), Fougea
patent: 4037730 (1977-07-01), Fetzer et al.
patent: 4063859 (1977-12-01), Halle et al.
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patent: 4421466 (1983-12-01), Heitzman
patent: 4934835 (1990-06-01), Albert
patent: 5687489 (1997-11-01), Tondorf et al.
patent: 7504296 (1975-06-01), None
patent: 19541281 (1997-02-01), None
patent: 2431361 (1978-06-01), None

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