Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent
1994-06-21
1995-11-28
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Floor-working
404 72, E01C 2309
Patent
active
054701317
ABSTRACT:
A self-propelled core-cutting apparatus is used to cut circular slots in pavement extending about manhole castings and the like to permit castings and surrounding cores of pavement to be removed quickly and easily for such purposes as elevating the level of manhole castings to align with new pavement. The apparatus has a transport carriage to which are connected 1) a large diameter, generally cylindrical core-cutting bit, 2) power-operated support and drive systems mounting the bit for vertical and rotary movement relative to the carriage along and about a vertically extending center axis, and 3) a power-operated stabilization system that makes use of the weight of the apparatus in maintaining desired positioning of the apparatus during cutting operations. Support for the core cutting bit is provided by a telescopically extensible array of cage-like structures that extend substantially concentrically about the center axis, including an outer cage that is rigidly connected to the carriage, and an inner cage that is movable vertically relative to both the outer cage and the bit. Job site positioning of the apparatus is effected by using lever or joystick controls to operate a fluid-motor-driven power-steerable wheel that also serves as one of three vertically movable components of the power-operated stabilization system. Preferred practice of the invention also makes use of other disclosed features.
REFERENCES:
patent: 799880 (1905-09-01), Tonge, Jr.
patent: 2088141 (1937-07-01), Royston
patent: 3097466 (1963-07-01), King
patent: 3217620 (1965-11-01), Mindrum et al.
patent: 3243924 (1966-04-01), Peters
patent: 3472555 (1969-10-01), Theermann et al.
patent: 3649071 (1972-03-01), Graff
patent: 3848687 (1974-11-01), Funakubo
patent: 3917426 (1975-11-01), Wohlweno et al.
patent: 4173836 (1979-11-01), Paurat
patent: 4262966 (1981-04-01), Bouplon
patent: 4287955 (1981-09-01), Anderson
patent: 4332299 (1982-06-01), Parks et al.
patent: 4458949 (1984-07-01), Jury
patent: 4668017 (1987-05-01), Peterson et al.
patent: 4723868 (1988-02-01), Ferguson
patent: 4761038 (1988-08-01), Hackmack
patent: 4896995 (1990-01-01), Simmons
patent: 4924951 (1990-05-01), Paulson
patent: 4968101 (1990-11-01), Bossow
patent: 5176426 (1993-01-01), Adamson
"Manholes Made Easy," Asphalt Contractor, pp. 62, 64--A Two Page Advertisement By RoadBadger, Inc. Burton, Ohio 44021 (1989).
"Manhole Master,"--A One Page Advertisement By RoadBadger, Inc, Burton, Ohio 44021 (1989).
"VACM-Vertical Asphalt Concrete Miller,"--A Four Page Brochure of RoadBadger, Inc., Burton, Ohio 44021 (1988).
Mahaffey Glenn L.
Nolan Brian J.
Svoboda, Sr. John M.
Americore Technologies, Inc.
Bagnell David J.
Burge David A.
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