Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Patent
1988-12-05
1990-06-12
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
125 2301, 2411017, B02C 100
Patent
active
049325973
ABSTRACT:
To provide a portable demolition apparatus for concrete slabs, plates or the like, a clamping arch (1) having two end portions (12, 13) is equipped with pointed bolts (15, 16; 17, 18) at the ends; at least one (16, 18) of the pointed bolts is coupled to a cylinder-piston arrangement (21) which, upon application of high hydraulic pressure in the order of for example 800 bar, drives the pointed bolt towards the other, thus cracking the concrete plate, slab or the like between the points. Hydraulic pressure is obtained from a separately located pressure source, which permits construction of the arch of lightweight material, with an overall weight of 50 kg or less, with a jaw clearance opening of 45 cm or less, application of hydraulic force being controlled by a pilot valve-control slider arrangement (23, 24) located directly on the clamping arch and coupled to the remotely located pressure source by suitable pressure hoses.
REFERENCES:
patent: 2557098 (1951-06-01), Graham et al.
patent: 3980341 (1976-09-01), Musannie et al.
patent: 3998201 (1976-12-01), Miura et al.
patent: 4203414 (1980-05-01), McClain
Hydrostress AG
Rosenbaum Mark
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