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US 7,547,074 B2Granted
Overlapping pedestals for supporting a block secured to a rotating drum
AssigneeKennametal Inc.
InventorsWayne H. Beach, Stephen P. Stiffler, Eric Paul Helsel
Life of this patent
Estimating the term…
Abstract
A pedestal assembly for an asphalt cutter and/or a longwall shearer includes a cutting bit detachably secured in a tool body mounted within a block with the block fixedly secured to a pedestal. The first end of the pedestal has a recess to overlap the second end of an adjacent pedestal when the pedestals are mounted on the outer surface of a drum of the cutter. The first end of the pedestal further includes a lateral flat surface portion for deflecting material made loose by the cutting bit.
Claims21
A pedestal assembly for mounting to a rotary drum comprising;
- a) a pedestal having a bottom surface, an opposite top surface, a first side and an opposite second side, a first end having a recess with a downwardly facing surface, a second end having an upwardly facing surface, wherein the downwardly facing surface and the upwardly facing surface are substantially the same distance from the bottom surface, such that when mounted upon the rotary drum the downwardly facing surface of the first end of the pedestal overlaps and rests upon the upwardly facing surface of the second end of an adjacent identical pedestal, wherein the pedestal further comprises an upright member adjacent to the first end protruding from the top surface of the pedestal to provide a shoulder to protect the block and wherein the upright member further includes a lateral surface portion and a frontal surface portion adjacent to the lateral surface portion, wherein the lateral surface portion forms an obtuse angle with the frontal surface portion such that the lateral surface portion acts to provide a material conveying surface for moving material loosened by the cutting bit in a predetermined direction in response to rotation of the drum;
- and
- b) a block secured to the top surface of the pedestal, wherein the block has a passageway extending therethrough to accept a tool body for securing a cutting bit therein.
A drum assembly for a rotary cutter comprising:
- a) a drum with an elongated body having a first end, an opposite second end and an outer surface, the body being rotatable about an axis extending from the first end to the second end;
- b) a plurality of pedestals, each adapted to receive a block, wherein each pedestal has a bottom surface securely mounted on the outer surface of the elongated body and an opposite top surface, wherein for at least one pair of adjacent pedestals, one of the pedestals has a first end with a downwardly facing surface and the adjacent pedestal has a recess with an upwardly facing surface and, wherein the downwardly facing surface of one pedestal overlaps with and contacts the upwardly facing surface of the other pedestal of the pair;
- and
- c) wherein each pedestal further comprises an upright member adjacent to the first end protruding from the top surface of the pedestal to provide a shoulder to protect the block and wherein the upright member further includes a lateral surface portion and a frontal surface portion adjacent to the lateral surface portion, wherein the lateral surface portion forms an obtuse angle with the frontal surface portion such that the lateral surface portion acts to provide a material conveying surface for moving material loosened by the cutting bit in a predetermined direction in response to rotation of the drum.
1 more element
A pedestal adapted to be secured to a rotary drum used on a mining or construction machine, wherein the pedestal is adapted to support a block with a cutting bit therein and, wherein the pedestal is comprised of a body having:
- a) a bottom surface and an opposite top surface;
- b) a first side and an opposite second side;
- d) a first end having a recess with a downwardly facing surface and a second end having a protrusion with an upwardly facing surface, wherein the downwardly facing surface and the upwardly facing surface are substantially the same distance from the bottom surface, such that when mounted upon a rotary drum the downwardly facing surface of the first end of the pedestal overlaps and rests upon the upwardly facing surface of the second end of an adjacent identical pedestal;
- and
- e) an upright member adjacent to the first end protruding from the top surface of the pedestal to provide a shoulder to protect the block and wherein the upright member further includes a lateral surface portion and a frontal surface portion adjacent to the lateral surface portion, wherein the lateral surface portion forms an obtuse angle with the frontal surface portion such that the lateral surface portion acts to provide a material conveying surface for moving material loosened by the cutting bit in a predetermined direction in response to rotation of the drum.
2 more elements
A pedestal adapted to be secured to a rotary drum used on a mining or construction machine, wherein the pedestal is adapted to support a block with a cutting bit therein and, wherein the pedestal is comprised of a body having:
- a) a bottom surface and an opposite top surface;
- b) a first side and an opposite second side;
- d) a first end having a recess with a downwardly facing surface and a second end having a protrusion with an upwardly facing surface, wherein the downwardly facing surface and the upwardly facing surface are substantially the same distance from the bottom surface, such that when mounted upon a rotary drum the downwardly facing surface of the first end of the pedestal overlaps and rests upon the upwardly facing surface of the second end of an adjacent identical pedestal, wherein the upwardly facing surface further includes one of a projection or a cavity and, wherein the downwardly facing surface further includes the other of the projection or cavity, wherein the projection and cavity are mateable with one another such that when the two pedestals are overlapping, the projection and cavity mate to provide lateral support to the pedestals.
Dependencies are inferred from the claim text.