US5610368A — Clip plate bulkhead mounting for EMI filters

Claim 1

Independent Claim 281 words

A bulkhead mounting plate having a plurality of electromagnetic interference (EMI) filter units mounted therein; said bulkhead mounting plate having a first edge, a second edge, a third edge and a fourth edge; said bulkhead mounting plate having fingers integrally attached to said first edge, said second edge and said third edge; said fingers attached to said second edge being first alternate fingers and second alternate fingers; said second alternate fingers being bent so that a gap is disposed between said first alternate fingers and said second alternate fingers; said first alternate fingers and said second alternate fingers being adapted to receive and grip inside and outside surfaces of edges of an edge port or notch in a shielding box; said edges of said edge port or notch in said shielding box being substantially the same thickness as the width of said gap; said bulkhead mounting plate being stiffened by folding said fourth edge inwardly at a right angle to said bulkhead mounting plate; said bulkhead mounting plate being perforated with precision mounting holes adapted to be used for a particular application; said fingers being dimpled to concentrate spring pressure between said fingers and said shielding box to improve the electrical contact and, therefore, the efficiency of said EMI filter units; predetermined spacing for said mounting holes between said EMI filter units to be mounted on said bulkhead mounting plate for flat ribbon cable terminations and connectors to connect external and internal portions of a circuit through said EMI filter units; a rib embossed in said bulkhead mounting plate parallel to said EMI filter units thereby increasing resistance to filter and solder joint damage by flexure of said bulkhead mounting plate.

Claim 2

Dependent Claim 281 words

A bulkhead mounting plate having a plurality of electromagnetic interference (EMI) filter units mounted therein; said bulkhead mounting plate having a first edge, a second edge, a third edge and a fourth edge; said bulkhead mounting plate having fingers integrally attached to said first edge, said second edge and said third edge; said fingers attached to said second edge being first alternate fingers and second alternate fingers; said second alternate fingers being bent so that a gap is disposed between said first alternate fingers and said second alternate fingers; said first alternate fingers and said second alternate fingers being adapted to receive and grip inside and outside surfaces of edges of an edge port or notch in a shielding box; said edges of said edge port or notch in said shielding box being substantially the same thickness as the width of said gap; said bulkhead mounting plate being stiffened by folding said fourth edge inwardly at a right angle to said bulkhead mounting plate; said bulkhead mounting plate being perforated with precision mounting holes adapted to be used for a particular application; said fingers being dimpled to concentrate spring pressure between said fingers and said shielding box to improve the electrical contact and, therefore, the efficiency of said EMI filter units; predetermined spacing for said mounting holes between said EMI filter units to be mounted on said bulkhead mounting plate for flat ribbon cable terminations and connectors to connect external and internal portions of a circuit through said EMI filter units; a rib embossed in said bulkhead mounting plate parallel to said EMI filter units thereby increasing resistance to filter and solder joint damage by flexure of said bulkhead mounting plate.

Claim 3

Dependent Claim 82 words

For multiple EMI filter units, a bulkhead mounting plate perforated with precision spaced ports appropriate to a predetermined circuit application, and whose periphery is divided into a number of alternate fingers, half of which are bent to fit within a mating port, in a shielding box, and are further bent with a latching ledge conforming to wall thickness of the shielding box, and taper inward below the latching ledge to permit easy automatic insertion into the mating port in the shielding box.

Claim 4

Dependent Claim 82 words

For multiple EMI filter units, a bulkhead mounting plate perforated with precision spaced ports appropriate to a predetermined circuit application, and whose periphery is divided into a number of alternate fingers, half of which are bent to fit within a mating port, in a shielding box, and are further bent with a latching ledge conforming to wall thickness of the shielding box, and taper inward below the latching ledge to permit easy automatic insertion into the mating port in the shielding box.

Claim 5

Dependent Claim 36 words

A bulkhead mounting plate as specified in claim 2 and provided with mounted EMI filters precision spaced so that their interior and exterior leads are compatible with a predetermined flat ribbon cable termination and associated sockets.

Claim 6

Dependent Claim 39 words

A bulkhead mounting plate as specified in claim 2 and provided with mounted EMI filters whose precision spaced filter leads are bent in a method that terminates in a manner capable of being mounted on a printed circuit board.

Claim 7

Dependent Claim 70 words

A bulkhead mounting plate, as specified in claim 3, whose unbent fingers are dimpled toward the bent fingers, and the edges of the latching ledge of said bent fingers are bent slightly upward, so that the dimples and bent edges combine to increase the contact pressure between the bulkhead plate and the shielding box to ensure the continuous electrical contact which is required for proper functioning of the EMI filters.

Claim 8

Dependent Claim 21 words

A bulkhead mounting plate, as specified in claim 5 formed of thin spring stock to prevent permanent deformation of the fingers.

Claim 9

Dependent Claim 23 words

A bulkhead mounting plate, as specified in claim 6 which is stiffened by embossing a portion of the plate adjacent to the filters.

Claim 10

Dependent Claim 14 words

A bulkhead mounting plate, as specified in claim 5 which is stiffened by coining.

Claim 11

Dependent Claim 24 words

A bulkhead mounting plate, as specified in claim 6 which is stiffened by the addition of a small second plate on said mounting plate.

Claim 12

Dependent Claim 16 words

The plate recited in claim 2 which is stiffened by a rib attached to said plate.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2000-03-10	2000-09-09	2001-03-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2004-03-10	2004-09-09	2005-03-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2008-03-10	2008-09-09	2009-03-11	$7700.00	Window Closed / Lapsed

Clip plate bulkhead mounting for EMI filters

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