Powered joint forming device for concrete or the like

Details Powered joint forming device for concrete or the like Powered joint forming device for concrete or the like

1979-08-13

1981-03-03

Hoag, W. E.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Surface deformation means only

404 74, 404 89, 404114, 425445, 425456, 425457, B28B 104, B28B 108, B29C 2300

Patent

active

042538165

ABSTRACT:
A powered jointer having a scoring undersurface for forming a stress joint in a wet concrete slab, followed by a reciprocating tamper foot which forms a stress joint while moving rock out of the joint and a smoothing tip following the formation of the stress joint for smoothing out the same, all in a single pass.

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patent: 1726665 (1929-09-01), Heltzel
patent: 1946972 (1934-02-01), Heltzel
patent: 1996153 (1935-04-01), Heltzel
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patent: 2486422 (1949-11-01), Kies
patent: 2617336 (1953-11-01), Brickler
patent: 2644378 (1953-07-01), Nelson
patent: 2949068 (1960-08-01), Griesham
patent: 3194130 (1965-07-01), Guntert
patent: 3286607 (1966-11-01), Middlestadt
patent: 3478655 (1969-11-01), Rasmussen
patent: 4027990 (1977-06-01), Merrill
patent: 4032249 (1977-06-01), De Vitis

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