Programmable logic controller seismic support bracket for nuclea

Details Programmable logic controller seismic support bracket for nuclea Programmable logic controller seismic support bracket for nuclea

1998-02-02

2000-10-03

Gaffin, Jeffrey

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

Support brackets

361800, 361801, 361825, 361756, 439341, 439342, 439527, 439534, H02B 101

Patent

active

061282022

ABSTRACT:
To prevent damage to the electrical connections between PLC modules and a backplane during seismic and other vibrational disturbances, a bracket is used having two parallel side members attached to the backplane and a lower support bar connected between the side members to support the PLC modules in the vertical direction. An upper support bar may also be provided between the side plates to hold the PLC modules in the bracket and further prevent vertical movement. The upper and lower support bars may also provide vertical members or a rest in contact with the PLC modules and having a high coefficient of friction to prevent lateral movement of the PLC modules with respect to the backplane.

REFERENCES:
patent: 4866576 (1989-09-01), Umetsu et al.
patent: 4899892 (1990-02-01), Rheault
patent: 5140501 (1992-08-01), Takahashi et al.
patent: 5209356 (1993-05-01), Chaffee
patent: 5216578 (1993-06-01), Zenitani et al.
patent: 5740011 (1998-04-01), Kobayashi et al.
patent: 5760998 (1998-06-01), Berberich et al.
patent: 5825616 (1998-10-01), Howell et al.
International Preliminary Examination Report of Apr. 1, 1999.

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