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US 8,511,946 B2Granted
Stabilization of boring tools
AssigneeRotary Technologies Corporation
InventorsDouglas J. Woodruff, Gary W. Pennala, William J. Endres
Life of this patent
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Abstract
A boring tool including a body, at least a cutting element mounted to the body, and at least a pad spring mounted to the body.
Claims22
A boring tool comprising:
- a body having a longitudinal axis;
- a cutting element mounted to the body at a location radially from said longitudinal axis;
- and
- a pad mounted to said body for stabilizing said tool during boring, said pad extending radially from said body and being sprung relative to said body along a radial direction, said pad being spaced apart from said cutting element and comprising:
- a first section comprising a bull nose outer surface,
- a second section adjacent the first section, and
- a third section adjacent the second section, wherein the third section comprises an outer surface that extends radially beyond the first section and wherein the second section has an outer surface defining a transition from the first section to the third section outer surface.
4 more elements
A boring tool comprising:
- a body;
- a cutting element mounted to the body;
- a shim;
- a beam mounted on the body and over the shim, wherein a portion of the beam extends beyond the shim defining a gap with the body;
- and
- a pad mounted to said beam for stabilizing said tool during boring, said pad being spaced apart from said cutting element and comprising:
- a first section comprising a bull nose outer surface,
- a second section adjacent the first section, and
- a third section adjacent the second section, wherein the third section comprises an outer surface that extends radially beyond the first section and wherein the second section has an outer surface defining a transition from the first section to the third section outer surface.
6 more elements
A boring tool comprising:
- a body having a longitudinal axis;
- a cutting element mounted to the body at a location radially from said longitudinal axis;
- and
- a pad mounted to said body, said pad extending radially from said body and being sprung relative to said body along a radial direction, wherein the pad comprises,
- a first section comprising a bull nose outer surface,
- a second section adjacent the first section, and
- a third section adjacent the second section, wherein the third section comprises an outer surface that extends radially beyond the first section and wherein the second section has an outer surface defining a transition from the first section to the third section outer surface.
4 more elements
A boring tool comprising:
- a body;
- a cutting element mounted to the body;
- a pad mounted to said body for stabilizing said tool during boring, said pad being spaced apart from said cutting element and comprising:
- a first section comprising a bull nose outer surface,
- a second section adjacent the first section, and
- a third section adjacent the second section, wherein the third section comprises an outer surface that extends radially beyond the first section and wherein the second section has an outer surface defining a transition from the first section to the third section outer surface;
- a spring pack;
- a support body;
- and
- a fastener fastened through the support body to the tool body, said fastener penetrating the spring pack, wherein the pad is mounted on said support body, wherein said support body comprises at least one seat, and at least one fastener, wherein the pad is seated on said at least one seat and is urged in place against said at least one seat by said at least one fastener.
7 more elements
Dependencies are inferred from the claim text.