Electrical connectors – With coupling movement-actuating means or retaining means in... – Including lock for retaining means
Reexamination Certificate
2006-11-14
2006-11-14
Dinh, Phuong (Department: 2839)
Electrical connectors
With coupling movement-actuating means or retaining means in...
Including lock for retaining means
Reexamination Certificate
active
07134894
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.
REFERENCES:
patent: 1998129 (1935-04-01), Fullman
patent: 3861770 (1975-01-01), Horak
patent: 3953097 (1976-04-01), Graham
Janowiak Brandon
Murphy Joseph F.
Dinh Phuong
Emrich & Dithmar LLC
Woodhead Industries Inc.
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