Breakable hangers
First Claim
Patent Images
1. A hanger for carrying an overhead cable used in a mine, the hanger designed to intentionally break and release the cable from the hanger with remote retraction of the cable from the mine, the hanger comprising:
- an upper hook that securely hangs from a ceiling of the mine;
at least one lower hook that carries and supports the cable; and
a connecting member, which connects the upper hook to the at least one lower hook;
wherein the at least one lower hook and the connecting member have a gauge that is less than the gauge size of the upper hook and wherein the at least one lower hook has a lower gauge size than the gauge size of the connecting member;
such that the lower hook and the connecting member have strength and composition sufficient to support the cable in normal use, but which, when tension or pressure is applied to the lower hook by remote retraction of the cable from the mine, break to release the cable and facilitate safe removal of the cable from the mine.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention comprises a collapsible hanger and a method for using the same for supporting, among other things, cables from the ceiling of mines. The collapsible hangers of the present invention allow the cables to fall to the floor when tension, pressure, and/or weight is applied to the hangers, either directly or indirectly.
-
Citations
54 Claims
-
1. A hanger for carrying an overhead cable used in a mine, the hanger designed to intentionally break and release the cable from the hanger with remote retraction of the cable from the mine, the hanger comprising:
-
an upper hook that securely hangs from a ceiling of the mine; at least one lower hook that carries and supports the cable; and a connecting member, which connects the upper hook to the at least one lower hook;
wherein the at least one lower hook and the connecting member have a gauge that is less than the gauge size of the upper hook and wherein the at least one lower hook has a lower gauge size than the gauge size of the connecting member;such that the lower hook and the connecting member have strength and composition sufficient to support the cable in normal use, but which, when tension or pressure is applied to the lower hook by remote retraction of the cable from the mine, break to release the cable and facilitate safe removal of the cable from the mine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. A hanger for releasably carrying overhead cable used in a mine, the hanger designed to purposefully bend or break and release the overhead cable, the hanger comprising:
-
an upper hook that securely hangs down from a ceiling of the mine; at least one lower hook that carries and supports the cable; a connecting member, which connects the upper hook to the at least one lower hook; and
,wherein the at least one lower hook and the connecting member are manufactured from a single piece of material; wherein the at least one lower hook has a strength and composition sufficient to the cable in normal use, but which, when tension or pressure of at least about 50 pounds is applied by remote retraction of the cable from the mine, the lower hook of the hanger will intentionally break, under a weight in the range of 50 to 100 pounds, to release the cable to facilitate removal of the cable from the mine. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
-
51. A breakable hanger for carrying an overhead cable until the hanger breaks with an intentionally applied tension or pressure of at least 50 pounds for facilitating cable removal, the breakable hanger comprising:
-
an upper hook that securely attaches to and hangs down from an overhead structure; at least one lower cable-carrying hook; and a connecting member, wherein the at least one lower hook has a lower gauge size than the gauge size of the connecting member which connects the upper hook to the at least one lower hook until the tension or pressure is intentionally applied to cause the hanger to break and facilitate cable removal. - View Dependent Claims (52)
-
-
53. A breakable hanger for carrying overhead cable in a mine, the breakable hanger comprising:
-
an upper hook that securely hangs down from a ceiling of the mine; a lower hook that carries and supports the cable near the mine ceiling when in normal use; and a connecting member, which connects the upper hook to the lower hook;
wherein the at least one lower hook has a lower gauge size than the gauge size of the connecting member and, wherein the at least one lower hook and the connecting member has a weight-bearing capacity less than the weight-bearing capacity of the upper hook and also have a strength and composition sufficient to support the cable in normal use, but which, when tension or pressure is applied by remote retraction of the cable from the mine, after which the lower hook or the connecting member intentionally breaks to release the cable and facilitate its safe removal from the mine. - View Dependent Claims (54)
-
Specification