End seal for splice closure
AssigneeMinnesota Mining and Manufacturing Company
InventorRussell P. Smith
Life of this patent
Estimating the term…
Abstract
Splice closures can be readily sealed by wrapping the cables with a mastic and then forming an end for a performed closure by placing the halves of a split ring about the mastic and drawing the halves closed by a toggle fastener including an arcuate leg connected at one end to one half and joined intermediate the fulcrum and handle of a lever supported on the other half to squeeze the mastic about the cables as the halves are drawn together. The closure may be sealed to the ring by a rolling O-ring.
Claims11
An end seal for an end of a splice closure formed as a hollow tubular member which is elliptical in cross section and has at least one open end for receiving cables to be spliced together, said seal comprising:
- collar means adapted to be placed about the cables in a location corresponding to a said end of the closure, said collar means having an elliptical shape in transverse cross section and having means defining a peripheral groove about the outside perimeter of said collar means, and
- an O-ring placed in said groove, said O-ring having an inside diameter to fit snugly against the bottom of said groove and
- said groove having a width sufficient to accommodate one rotation of said O-ring.
A sealing collar for use about a pair of cables which have been wrapped convolutely with a mastic tape material, said collar comprising:
- a pair of shells which when placed together define a ring, each said shell having a body portion with an inner surface formed to engage a mastic surface, means on each shell for aligning each said shell with the other of said shells, and each shell having at least one end, and
- toggle means affixed to said at least one end of each of said shells for drawing said ends into engagement with each other.
A sealing collar for use about a pair of cables which have been wrapped convolutely with a wide mastic tape material which wrapping has resulted in an elliptically shaped volume of mastic material, said collar comprising:
- a pair of shells which when placed together define an elliptical ring, each said shell having a body portion with an inner surface formed to engage a mastic surface, a base portion on one side of said body portion having means for aligning said shell with the other of said shells, an end portion on the other side of said body portion, and opposite ends, and
- toggle fastener means joined to said ends of said shells for urging said ends of one shell into engagement with the ends of the other shell.
Dependencies are inferred from the claim text.