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US 12,601,159 B2Granted
Retention system for attaching tool bits to a blade assembly
AssigneeCaterpillar Inc.
InventorsDavid Bruno Parzynski, Jr., Thomas Marshall Congdon
Life of this patent
Estimating the term…
Abstract
An orientation plate comprises a rectangular body defining a top surface, a bottom surface, a front surface, a back surface, a first end surface, a second end surface, and a thickness that is the minimum dimension of the body, and a plurality of apertures extending through the thickness of the body, each aperture defining a perimeter having at least one orientation flat.
Claims20
An assembly, comprising:
- a tool bit, including:
- a first side region,
- a second side region,
- a front working region, forming a first draft angle with a longitudinal axis of the tool bit measured in a plane containing the longitudinal axis and a radial direction of the tool bit, comprising:
- a first flat angled surface, and
- a second flat angled surface forming a first included angle, with the first flat angled surface and projected along the longitudinal axis onto a plane perpendicular to the longitudinal axis, ranging from 130 degrees to less than 180 degrees,
- the first flat angled surface extending from the second flat angled surface to a first end of the first side region, and
- the second flat angled surface extending from the first flat angled surface to a first end of the second side region, and
- a rear working region, forming a second draft angle with the longitudinal axis measured in the plane containing the longitudinal axis and the radial direction, extending from a second end of the first side region to a second end of the second side region,
- the second draft angle being different from the first draft angle;
- an adapter board;
- and
- an orientation plate, configured to orient the tool bit relative to a centerline of the adapter board, comprising:
- a rectangular body defining a top surface, a bottom surface, a front surface, a back surface, a first end surface, a second end surface, and a thickness, and
- a plurality of apertures extending through the thickness.
12 more elements
An assembly, comprising:
- a tool bit, including:
- a shank portion, and
- a working portion, comprising:
- a first side region,
- a second side region,
- a front working region, forming a first draft angle with a longitudinal axis of the shank portion measured in a plane containing the longitudinal axis and a radial direction of the shank portion, comprising:
- a first flat angled surface, and
- a second flat angled surface forming a first included angle, with the first flat angled surface and projected along the longitudinal axis onto a plane perpendicular to the longitudinal axis, ranging from 130 degrees to less than 180 degrees,
- the first flat angled surface extending from the second flat angled surface to a first end of the first side region, and
- the second flat angled surface extending from the first flat angled surface to a first end of the second side region, and
- a rear working region, forming a second draft angle with the longitudinal axis measured in the plane containing the longitudinal axis and the radial direction, extending from a second end of the first side region to a second end of the second side region,
- the second draft angle being different from the first draft angle;
- and
- an orientation plate, comprising:
- a rectangular body defining a top surface, a bottom surface, a front surface, a back surface, a first end surface, a second end surface, and a thickness, and
- a plurality of apertures including at least one orientation flat configured to contact the shank portion of the tool bit of the assembly.
13 more elements
An assembly, comprising:
- a tool bit including:
- a shank portion, and
- a working portion, including:
- a first side region,
- a second side region,
- a front working region, forming a first draft angle with a longitudinal axis of the shank portion measured in a plane containing the longitudinal axis and a radial direction of the shank portion, comprising:
- a first angled surface, and
- a second angled surface forming a first included angle, with the first angled surface and projected along the longitudinal axis onto a plane perpendicular to the longitudinal axis, ranging from 130 degrees to less than 180 degrees,
- the first angled surface extending from the second angled surface to the first side region, and
- the second angled surface extending from the first angled surface to the second side region, and
- a rear working region, forming a second draft angle with the longitudinal axis measured in the plane containing the longitudinal axis and the radial direction, extending from a second end of the first side region to a second end of the second side region,
- the second draft angle being different from the first draft angle;
- and
- an orientation plate, configured to orient the tool bit, comprising:
- a rectangular body, and
- a plurality of apertures extending through the rectangular body.
13 more elements
Dependencies are inferred from the claim text.