Geometrical instruments
Patent
1985-02-13
1986-08-05
Weidenfeld, Gil
Geometrical instruments
339186M, H05K 100
Patent
active
046039295
ABSTRACT:
A back plane for a shelf of electronic circuit modules includes back plane connectors for providing signal and power connections with circuit module connectors near a front face of the back plane and for providing connection with bus or cable connectors near a back face of the back plane. A connector shroud includes a body or base portion and side walls extending from the base portion for guiding the bus or cable connector in alignment with pins of the back plane connector. The base portion includes apertures for accepting the pins which protrude therethrough. Most of the apertures are of sufficient size to freely accept the pins and the remainder of the apertures are of a size to provide an interference fit with corresponding ones of the pins. A key member extends normal to the base portion in a direction opposite of the side walls. In assembly with the back plane, the key member extends through part of an elongated opening in the back plane adjacent the back plane connector. The key member is positioned to cooperate with a complementary structure in an electronic circuit module of a type acceptable for connection to the back plane connector. A keyway defined in one of the side walls of the shroud is of a predetermined position in relation to a particular position of the key member and defines which of the bus and/or cable connectors are connectable with the back plane connector. The key member also includes a releasable latch for retaining the connector shroud in assembly with the back plane.
REFERENCES:
patent: 3500288 (1970-03-01), Startin et al.
patent: 3753212 (1973-08-01), Yamada et al.
patent: 3848951 (1974-11-01), Michaels et al.
patent: 3897131 (1975-07-01), Stauffer
patent: 3963301 (1976-06-01), Stark
patent: 4350409 (1982-09-01), Kato et al.
patent: 4376565 (1983-03-01), Bird et al.
patent: 4426123 (1984-01-01), Ritchie et al.
patent: 4448471 (1984-05-01), Berry et al.
Northern Telecom Limited
Pirlot David L.
Weidenfeld Gil
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