Inductive clamp for applying signal to buried utilities
First Claim
Patent Images
1. An inductive clamp, comprising:
- a pair of jaws configured to surround a conductor;
a pair of handles, each connected to a corresponding jaw;
a pivotal connection that allows the jaws to close around the conductor;
a ferromagnetic core mounted in each jaw;
a coil surrounding at least one of the cores; and
means mounted in at least one of the jaws or handles for indicating to a user that a signal has been applied to at least one of the cores through the coil.
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Abstract
An inductive clamp includes a pair of jaws configured to surround a conductor, and a pair of handles, each connected to a corresponding jaw. A pivotal connection is provided that allows the jaws to close around a conductor. The jaws are optionally biased to hold them closed around the conductor. A ferromagnetic core is mounted in each jaw and a coil surrounds at least one of the cores. An indicator is provided that tells a user that a signal has been applied to at least one of the cores.
47 Citations
18 Claims
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1. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a pair of handles, each connected to a corresponding jaw; a pivotal connection that allows the jaws to close around the conductor; a ferromagnetic core mounted in each jaw; a coil surrounding at least one of the cores; and means mounted in at least one of the jaws or handles for indicating to a user that a signal has been applied to at least one of the cores through the coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a ferromagnetic core mounted in each jaw; a pair of handles, each connected to a corresponding jaw; a floating pivotal connection that allows the jaws to close around the conductor and ensures that a pair of flat opposing ends of the cores are mated; at least one leaf spring mounted in the handles for biasing the jaws to hold them closed around the conductor; and a coil surrounding at least one of the cores. - View Dependent Claims (11, 12)
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13. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a pair of handles, each connected to a corresponding jaw; a pivotal connection that allows the jaws to close around the conductor; a ferromagnetic core mounted in each jaw; a coil surrounding one of the cores; and a cable spool dimensioned and configured to be releasably held between jaws for having an electric cord wrapped around the cable spool. - View Dependent Claims (14, 15)
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16. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a pair of handles, each connected to a corresponding jaw; a pivotal connection that allows the jaws to close around the conductor; a ferromagnetic core mounted in each jaw; a coil surrounding one of the cores; and means mounted in at least one of the jaws or handles for indicating to a user that the jaws are fully closed.
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17. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a pair of handles, each connected to a corresponding jaw; a pivotal connection that allows the jaws to close around the conductor; a ferromagnetic core mounted in each jaw; a coil surrounding at least one of the cores; and an indicator mounted in at least one of the jaws or handles capable of telling a user that a signal has been applied to at least one of the cores through the coil.
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18. An inductive clamp, comprising:
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a pair of jaws configured to surround a conductor; a pair of handles, each connected to a corresponding jaw; a pivotal connection that allows the jaws to close around the conductor; a ferromagnetic core mounted in each jaw; a coil surrounding one of the cores; and an indicator mounted in at least one of the jaws or handles capable of telling a user that the jaws are fully closed.
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Specification