Structure of shelf to be fixed to frame of communications appara

Details Structure of shelf to be fixed to frame of communications appara Structure of shelf to be fixed to frame of communications appara

1988-05-31

1989-09-12

Thompson, Gregory D.

Electricity: electrical systems and devices

Miscellaneous

211 41, 361415, H02B 102, H05K 718

Patent

active

048665762

ABSTRACT:
An improved mounting apparatus of a shelf housing printed circuit boards in a frame is provided. The shelf is designed to prevent mechanical damage to itself and to the printed circuit boards inside the shelf in the event of deformation of the frame due to vibration during transportation or earthquakes. Guide members which enclose the printed circuit boards are fastened to supporting members in such a manner that the guide members can shift position lengthwise along the supporting members. Thus, mechanical stress causing the frame to deform from a rectangle into a parallelogram does not also deform the guide members holding the printed circuit boards. Accordingly, damage to soldered connections or circuit components on printed circuit boards is prevented.

REFERENCES:
patent: 3231785 (1966-01-01), Calabro
patent: 3640399 (1972-02-01), Hartman
patent: 4013928 (1977-03-01), Sarinopoulos et al.
patent: 4574332 (1986-03-01), Calabro
Harrod, William, et al., "The Bellpac Packaging System"; The Engineer Western Electric, (Third Issue, 1983), pp. 5-15.

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