Tractor-controlled hammer assembly

Details Tractor-controlled hammer assembly Tractor-controlled hammer assembly

1988-11-08

1989-12-26

Watts, Douglas D.

Tool driving or impacting

With indicating or signaling means

173 50, 173 46, 173 24, F21B 702

Patent

active

048891924

ABSTRACT:
An apparatus for supporting conventional hand-held pneumatic breakers in such a way as to break a concrete slab down to the desired precise depth. The slab can be a building floor, bridge deck, or other slab required to be broken to a predetermined depth. The apparatus comprises a mounting frame adapted to replace the bucket of a mini-loader such that the mounting frame can be positioned at an adjusted level and orientation by the hydraulically operated arms and rams of the mini-loader. The mounting frame has an upper flange from which depend U-shaped guiding brackets between which are guided the transverse handlebar of each breaker. A guide for each drill bit of the breakers is fixed to the mounting frame. The breakers are free to move between a top and a lower limit position relative to the mounting frame. In the lower position the handle bars are supported by the bight of the U-shaped brackets. During the concrete slab breaking work, the drill bit abuts on the slab solely under the bias of the hammer weight; this results in precise drilling.

REFERENCES:
patent: 494909 (1893-04-01), Wallis
patent: 1945322 (1934-01-01), Lafayette, Jr.
patent: 2228445 (1938-10-01), DeVelbiss
patent: 3231027 (1966-01-01), Viau
patent: 3584816 (1971-06-01), Salkeld
patent: 3635133 (1972-01-01), Stougnard
patent: 3757875 (1973-09-01), Gunning
patent: 4087010 (1978-05-01), Stormon
patent: 4087010 (1978-05-01), Stormon
patent: 4602821 (1986-07-01), Schneff

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