US 5,475,260 AGranted

Electronic read-only module

AssigneeFrama AG

InventorWerner Haug

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Abstract

The electronic read-only memory has an inner and an outer casing. The inner casing is located on a secondary circuit board, from whose edge projecting laterally from the inner casing project contact elements for producing a plug contact with the contact counterelements, which are located on a circuit board of a device, which is to be equipped with the ROM. The outer casing has lateral, outwardly open gaps, which protectively receive the contact elements. Due to the fact that the free end of the contact elements is set back with respect to the opening edge of the cap-like, outer casing, the contact elements are protected against harmful contact. This also greatly simplifies the loading of a device with the ROM, because as a result of a simple plugging movement numerous contact elements can be brought into reliable contact with the contact counterelements.

Claims14

Dependent claims

An electronic read-only memory module electrically connectable to a primary electrical circuit board, said module comprising:

a casing having a base;
a memory unit enclosed in said casing and having a plurality of connecting leads extending to the exterior of said casing and from said base;
a secondary electrical circuit board having a side positioned adjacent said casing base;
a plurality of secondary contact elements projecting perpendicularly from said side of said secondary circuit board, said plurality of secondary contact elements having free ends connectable with mating primary contact elements on the primary circuit board, said plurality of secondary contact elements being electrically connected to corresponding ones of said connecting leads of said memory unit;
a casing cap having an open end, a closed end, and walls encompassing and fixedly holding said secondary circuit board, said casing, and said secondary contact elements, such that said free ends of said secondary contact elements are set back inwardly with respect to a plane containing the open end of said casing cap, and such that said secondary contact elements project toward the open end of said casing cap;
and
a closure wall contained within and attached to said casing cap, said closure wall being located between said casing and the open end of said casing cap, such that a gap is provided laterally between said closure wall and said casing cap for clear passage of said secondary contact elements.

4 more elements

An electronic read-only memory module electrically connectable to a primary electrical circuit board, said module comprising:

a casing having a base;
a memory unit enclosed in said casing and having a plurality of connecting leads extending to the exterior of said casing and from said base;
a secondary electrical circuit board, said casing base being positioned adjacent said secondary circuit board;
a plurality of secondary contact elements projecting from said secondary circuit board and having free ends connectable with mating primary contact elements on the primary circuit board, said plurality of secondary contact elements being electrically connected to corresponding ones of said connecting leads of said memory unit;
a casing cap having an open end and walls encompassing and fixedly holding said secondary circuit board, said casing, and said secondary contact elements, such that said free ends of said secondary contact elements are set back inwardly with respect to a plane containing said casing cap open end;
wherein said casing cap has resilient tongues with ends projecting internally of said casing cap, whereby said secondary circuit board is held locked behind the ends of said resilient tongues;
and
a closure wall contained within and attached to said casing cap, such that said casing is located between said casing cap and said closure wall, and such that a gap is provided laterally and between said casing cap and said closure wall for clear passage of said secondary contact elements;
wherein
said closure wall comprises depending side edges to define a U-shaped cross section for said closure wall, said gap being defined by said casing cap and said side edges of said closure wall.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/316,206Filed 30 Sep 1994 · continuation
Priority: CH 00757/9210 Mar 1992
Granted: 12 Dec 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H05K 1/141
Structural association of two or more printed circuits: one or more single auxiliary printed circuits mounted on a main printed circuit, e.g.…
H05K 3/368
Assembling printed circuits with other printed circuits: parallel to each other
H05K 2201/049
Assemblies of printed circuits: pCB for one component, e.g. for mounting onto mother PCB
H05K 2201/10303
Metallic connector elements partly mounted in a hole of the PCB: pin-in-hole mounted pins