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US 8,408,845 B2Granted
Pedestal support for mine prop
AssigneeSwanson Industries, Inc.
InventorThomas L. Hutchinson
Life of this patent
Estimating the term…
Abstract
A pedestal support for a mine prop. The pedestal support includes a collar to dispose a mine prop at least partially therein and a yielding member extending from the collar. The yielding member includes a wall having a top edge and a bottom edge and having a thickness that tapers from the top edge to the bottom edge and that flares from the top edge to the bottom edge.
Claims21
A pedestal support for a mine prop, comprising:
- a collar to dispose a mine prop at least partially therein;
- and
- a yielding member extending from said collar and having a central longitudinal axis, said yielding member comprising a wall having an exterior surface, an interior surface, a top edge, and a bottom edge, said exterior surface extending from said top edge to said bottom edge with a pitch angled outward from said central longitudinal axis, said interior surface extending from said top edge to said bottom edge with a pitch angled outward from said central longitudinal axis, said pitch angle of said exterior surface less than said pitch angle of said interior surface.
A pedestal support for a mine prop, comprising:
- a collar to dispose a mine prop at least partially therein;
- and
- a yielding member extending from said collar and comprising a wall having a top edge and a bottom edge, said wall having a thickness that tapers from said top edge to said bottom edge.
A pedestal support for a mine prop comprising,
- a collar comprising a bottom edge;
- a ledge extending from said bottom edge of said collar;
- and
- a yielding member extending from said collar, the yielding member having an interior surface, an exterior surface, a top edge, and a bottom edge, said yielding member having a top edge thickness determined by the distance between said exterior surface and said interior surface, said yielding member having a bottom edge thickness determined by the distance between said exterior surface and said interior surface, said top edge thickness being greater than said bottom edge thickness, said top edge being a distance from said bottom edge such that the cross sectional area of said yielding member remains substantially constant between said top edge and said bottom edge.
1 more element
Dependencies are inferred from the claim text.