Coaxial electrical connector for hazardous locations
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United States of America Patent
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Nov 14, 2006
Issued Date -
N/A
app pub date -
Mar 27, 2006
filing date -
May 14, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed are two embodiments of a coaxial electrical connector designed for use in hazardous locations. Mating connectors are connected coaxially, and coupled together by means of a threaded connection. When the mating connectors are connected, they cannot be disconnected manually. Rather, a tool is necessary to disconnect the connectors. In one embodiment, each connector includes a generally cylindrical coupler member having integral, axial fingers or tines spaced circumferentially. The couplers are rotatably mounted to inserts in which the connecting elements are embedded. A ratchet assembly permits the couplers to be threaded together to make a connection but is overridden in the unconnecting direction, requiring a tool to be placed in the space between adjacent tines to connect the coupler to an associated outer housing which may then be turned to disconnect the connectors. In a second embodiment, coupling members are provided with a ratchet interface surface having interlocking, yieldable teeth so that when the coupling members are secured by hand, a retaining force secures the coupling members together and prevents disconnection by manual force alone, requiring tools to deform the teeth and disconnect the connectors.
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