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US 6,146,056 AGranted
Channel and bearing plate assembly
AssigneeJennmar Corporation
InventorFrank Calandra, Jr.
Life of this patent
Estimating the term…
Abstract
A double ribbed bearing plate for use with a channel member in supporting a mine roof. The bearing plate includes a base with ribs in the bearing plate define recesses which receive flanges on the channel. The longitudinal edges of the bearing plate may extend below the plane of the base. When installed on a mine roof, the longitudinal edges may be spread apart upon changes in the load applied by the mine roof.
Claims23
A bearing plate comprising:
- a planar body portion positioned in a plane, said planar body portion having a contact surface for abutting a planar surface and an outer surface on an opposite side of said body portion, said body portion defining an opening through said bearing plate;
- a pair of spaced apart peripheral ribs formed in said body portion, each said peripheral rib extending outwardly from said outer surface and defining a recess;
- and
- a pair of legs, each said leg being integrally formed with one of each said peripheral ribs, wherein each said leg extends from each respective said peripheral rib in a direction away from said contact surface and each said leg passes in the same direction through the plane of said planar body portion.
1 more element
A mine roof support assembly comprising:
- a) an elongated member having (i) a base portion, and (ii) a pair of longitudinal flanges on opposite sides of said base portion, said base portion having a bearing surface and a receiving surface and defining an opening through said elongated member;
- b) a bearing plate having (i) a planar body portion, said body portion including a contact surface for abutting said elongated member receiving surface and an outer surface on an opposite side of said body portion, said body portion defining an opening through said bearing plate, said body portion opening aligned with said elongated member opening, (ii) a pair of spaced apart peripheral ribs formed in said body portion, each said peripheral rib extending outwardly from said outer surface and defining a recess configured to receive one of said elongated member flanges, and (iii) a pair of legs, each said leg integrally formed with one of said peripheral ribs;
- and
- c) an anchor extending through said aligned openings and configured to be inserted into a borehole in a rock formation for engaging said bearing plate and said elongated member with the rock formation to support a load applied by the rock formation.
1 more element
A method of supporting a rock formation comprising the steps of:
- positioning a bearing plate in overlying abutting relation with an elongated member, the bearing plate and the elongated member each having an aligned opening therethrough and the bearing p late having a pair of peripheral ribs formed therein, the ribs each defining a recess;
- positioning longitudinal flanges on opposing sides of the elongated member within the recesses in the bearing plate;
- and
- extending an anchor through the aligned openings in the bearing plate and urging the elongated member into engagement with the rock formation thereby urging the bearing plate into contact with a surface of the rock formation.
1 more element
A method of indicating the amount of load applied by a supported rock formation comprising the steps of:
- positioning a bearing plate in overlying abutting relation with an elongated member, the bearing plate having a pair of peripheral ribs formed therein, the peripheral ribs each defining a recess and being integrally formed with a pair of bearing surfaces for engaging a rock formation, the elongated member having a bearing surface for engaging the rock formation and a pair of opposing longitudinal flanges, the bearing plate and the elongated member each having an aligned opening therethrough;
- positioning the longitudinal flanges within the recesses in the bearing plate;
- extending an anchor through the aligned openings in the bearing plate and the elongated member into engagement with the rock formation thereby urging the bearing surfaces of the bearing plate and the bearing surface of the elongated member into contact with a surface of the rock formation;
- determining a first configuration of the bearing plate recesses;
- allowing the load of the rock formation to shift thereby inducing a second configuration of the bearing plate recesses;
- and
- comparing the change between the first recess configuration and the second recess configuration to a predetermined standard for a load required to affect the change.
4 more elements
A bearing plate comprising:
- a planar body portion having a contact surface for abutting a planar surface and an outer surface on an opposite side of said body portion;
- a pair of spaced apart peripheral ribs formed in said body portion, each said peripheral rib extending outwardly from said outer surface and defining a recess;
- a central rib formed in said body portion and positioned between said pair of peripheral ribs, wherein said central rib defines an opening through said bearing plate and said peripheral ribs each extend a greater distance from said outer surface than said central rib extends from said outer surface;
- and
- a pair of legs, each leg being integrally formed with one of said peripheral ribs.
2 more elements
A bearing plate comprising:
- a planar body portion having a contact surface for abutting a planar surface and an outer surface on an opposite side of said body portion, said body portion defining an opening through said bearing plate;
- a pair of spaced apart peripheral ribs formed in said body portion, each said peripheral rib extending outwardly from said outer surface and defining a recess;
- a plurality of inner ribs formed in said body portion in spaced apart positions between said peripheral ribs, such that said opening is defined in said body portion at a position between said inner ribs;
- and
- a pair of legs, each leg being integrally formed with one of said peripheral ribs, wherein said peripheral ribs each extend a greater distance from said outer surface than each said inner rib extends from said outer surface.
2 more elements
Dependencies are inferred from the claim text.