04215386 is referenced by 24 patents and cites 8 patents.

By providing a plurality of input/output housings which are removably connected to a controller interconnecting duct, with each input/output housing accommodating a plurality of input/output modules that are quickly and easily removably connected thereto, an input/output assembly for a programmable controller is achieved capable of rapid field assembly and field dis-assembly for removal or replacement of any necessary parts. In the preferred embodiment, all connectors in the programmable controller assembly are solderless connections, thereby allowing complete removal and replacement of connectors in the field without soldering. Furthermore, the input/output modules are lightweight and easily handled for quick insertion or removal from the plugged-in housing connections.

Title
Modular panel construction for programmable controller
Application Number
5/883277
Publication Number
4215386
Application Date
March 3, 1978
Publication Date
July 29, 1980
Inventor
Roman Y Gonzales
Andover
MA, US
Thomas A Boissevain
Bedford
MA, US
John E Farrand
Nashua
NH, US
Joseph F Sadlow
North Reading
MA, US
Jay M Prager
Hudson
NH, US
Agent
Mattern Ware Davis & Stoltz
Assignee
Modicon Division Gould
MA, US
IPC
H05K 5/00
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