US5647748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit board ground clip
Assignee: Dell USA LP
•
Filing: 1995-07-14
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Granted: 1997-07-15
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Expires: 2015-07-14
Abstract
Abstract A printed circuit board ground clip is provided having upwardly extending retainers and downwardly extending legs. The legs are designed to insert within plated-through holes of a variable thickness printed circuit board. The upwardly extending retainers terminate as a spaced pair of flanges which frictionally receive and electrically couple with a hook. The hook extends from the chassis of an electronic device, through a slot within the printed circuit board and between the spaced flanges. Accordingly, the hook and ground clip form an electrical conduit between a ground supply connected to the electronic device chassis and a ground conductor formed within the printed circuit board. Chassis-to-ground conductor attachment is performed during assembly of the board to the chassis backplane. Attachment can be quickly and easily reversed to allow board re-work, without requiring placement of heat upon the board. The present attachment mechanism further avoids user-inserted fasteners and the reliability problems they present.
Inventors
- 👤 R. Steven Mills
- 👤 Jerry D. Gandre
- 👤 Steve L. Sands
- 👤 Gita P. Khadem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:50
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/50; H01R12/51; H01R12/55; H01R12/58; H01R13/00; H01R13/648; H01R13/658; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0039; Y; Y10; Y10S; Y10S439/00; Y10S439/947
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
138 words
A printed circuit board ground clip, comprising: an elongated base having two end portions which are bent to extend substantially parallel to each other at a spaced distance from each other; at least one leg extending from a first side of each said two end portions; a retainer extending from a second side opposite the first side of each said two end portions, wherein said retainer terminates as a flange; and a ground supply bearing hook dimensioned to extend through said ground clip so as to frictionally engage with said flanges of said ground clip, and additionally frictionally engage with a printed circuit board supporting said ground clip by laterally moving said printed circuit board relative to said hook so that a groove in said hook embraces a top and a bottom surface of said printed circuit board.
Claim 2
Dependent Claim
138 words
A printed circuit board ground clip, comprising: an elongated base having two end portions which are bent to extend substantially parallel to each other at a spaced distance from each other; at least one leg extending from a first side of each said two end portions; a retainer extending from a second side opposite the first side of each said two end portions, wherein said retainer terminates as a flange; and a ground supply bearing hook dimensioned to extend through said ground clip so as to frictionally engage with said flanges of said ground clip, and additionally frictionally engage with a printed circuit board supporting said ground clip by laterally moving said printed circuit board relative to said hook so that a groove in said hook embraces a top and a bottom surface of said printed circuit board.
Claim 3
Dependent Claim
37 words
The printed circuit board ground clip as recited in claim 1, wherein the flange of one said retainer is adapted to separate from the flange of the other said retainer upon ingress of said hook placed therebetween.
Claim 4
Dependent Claim
39 words
The printed circuit board ground clip as recited in claim 2, wherein said hook comprises a pair of opposed side surfaces upon which the flange of one said retainer and the flange of the other said retainer frictionally abut.
Claim 5
Dependent Claim
27 words
The printed circuit board ground clip as recited in claim 3, wherein said frictional abutment comprises an electrically conductive path between said ground clip and said hook.
Claim 6
Dependent Claim
33 words
The printed circuit board ground clip as recited in claim 1, wherein the leg extending from said two portions is configured for placement into a plated hole formed within a printed circuit board.
Claim 7
Dependent Claim
71 words
The printed circuit board ground clip as recited in claim 1, further comprising a key extending from the first side of each said two portions, wherein a distance between the key extending from one of said two portions and one terminal end of said elongated base is equal to a distance between the key extending from the other of said two portions and the other terminal end of said elongated base.
Claim 8
Dependent Claim
34 words
The printed circuit board ground clip as recited in claim 6, wherein said key extending from each said two portions is configured for placement into a plated hole formed within a printed circuit board.
Claim 9
Dependent Claim
29 words
The printed circuit board ground clip as recited in claim 1, wherein said ground clip is a metal selected from the group consisting of Be, Cu, C and steel.
Claim 10
Dependent Claim
207 words
An assembly for electrically connecting a ground supply to a ground conductor of a printed circuit board, comprising: a printed circuit board having an elongated slot extending through the board between opposed planar surfaces of the board, said board further having plated holes extending as two rows across a portion of said board wherein said rows are spaced substantially parallel to each other and each of the plated holes is electrically connected to a ground conductor configured across a portion of said board; a ground clip having a spaced plurality of legs and a pair of retainers extending from the ground clip toward one another, said legs are adapted for solder retention within respective said plated holes and flanges at terminal ends of said retainers are adapted to separate and bear against sides of a ground supply bearing hook; and said ground supply bearing hook dimensioned to extend through said elongated slot so as to frictionally engage with said flanges of said ground clip, and additionally frictionally engage with a printed circuit board supporting said ground clip by laterally moving said printed circuit board relative to said hook so that a groove of said hook embraces a top and a bottom surface of said printed circuit board.
Claim 11
Dependent Claim
207 words
An assembly for electrically connecting a ground supply to a ground conductor of a printed circuit board, comprising: a printed circuit board having an elongated slot extending through the board between opposed planar surfaces of the board, said board further having plated holes extending as two rows across a portion of said board wherein said rows are spaced substantially parallel to each other and each of the plated holes is electrically connected to a ground conductor configured across a portion of said board; a ground clip having a spaced plurality of legs and a pair of retainers extending from the ground clip toward one another, said legs are adapted for solder retention within respective said plated holes and flanges at terminal ends of said retainers are adapted to separate and bear against sides of a ground supply bearing hook; and said ground supply bearing hook dimensioned to extend through said elongated slot so as to frictionally engage with said flanges of said ground clip, and additionally frictionally engage with a printed circuit board supporting said ground clip by laterally moving said printed circuit board relative to said hook so that a groove of said hook embraces a top and a bottom surface of said printed circuit board.
Claim 12
Dependent Claim
22 words
The assembly as recited in claim 9, wherein said ground conductor extends across a portion of one of said opposed planar surfaces.
Claim 13
Dependent Claim
28 words
The assembly as recited in claim 9, wherein said ground conductor extends along an intermediate planar region arranged parallel to and insulatively spaced between said opposed planar surfaces.
Claim 14
Dependent Claim
27 words
The assembly as recited in claim 9, wherein said hook comprises an electrically conductive material connected to a chassis upon which said printed circuit board is attached.
Claim 15
Dependent Claim
30 words
The assembly as recited in claim 9, wherein said hook extends from and is electrically coupled to a chassis, and wherein the chassis is electrically coupled to a ground supply.
Claim 16
Dependent Claim
24 words
The assembly as recited in claim 9, wherein said flanges are made of electrically conductive material which electrically contacts the sides of said hook.
Claim 17
Dependent Claim
53 words
The assembly as recited in claim 9, wherein each of said plurality of legs are bent from a substantially straight position to an arcuate position, and wherein a first set of said legs are bent at a location closer to the end of said respective legs than a second set of said legs.
Claim 18
Dependent Claim
78 words
The assembly as recited in claim 15, wherein said first set of legs are bent at a location which abuts, during placement of said legs into said plated holes, against one of the opposed planar surfaces of a board of first thickness, and wherein said second set of legs are bent at a location which abuts, during placement of said legs into said plated holes, against one of the opposed planar surfaces of a board of second thickness.
Claim 19
Independent Claim
147 words
A method for applying a ground potential to a ground conductor of a printed circuit board, comprising: providing a ground potential to a hook extending upward from a computer chassis; forming a ground conductor across a printed circuit board having a slot formed through the board and a row of plated holes arranged on opposing sides of the slot; providing a ground clip having a plurality of legs extending downward and a pair of retainers extending upward connected to the legs; inserting the legs of said ground clip into said plated holes and soldering said legs to said plated holes; placing the slot over the hook to electrically couple the hook between the pair of retainers; and moving the board in a lateral direction relative to the hook to frictionally dispose an inward facing surface of the hook upon the board at one end of said slot.
Claim 20
Independent Claim
147 words
A method for applying a ground potential to a ground conductor of a printed circuit board, comprising: providing a ground potential to a hook extending upward from a computer chassis; forming a ground conductor across a printed circuit board having a slot formed through the board and a row of plated holes arranged on opposing sides of the slot; providing a ground clip having a plurality of legs extending downward and a pair of retainers extending upward connected to the legs; inserting the legs of said ground clip into said plated holes and soldering said legs to said plated holes; placing the slot over the hook to electrically couple the hook between the pair of retainers; and moving the board in a lateral direction relative to the hook to frictionally dispose an inward facing surface of the hook upon the board at one end of said slot.
Claim 21
Dependent Claim
17 words
The method as recited in claim 17, wherein the step of soldering said legs comprises wave soldering.
Claim 22
Dependent Claim
24 words
The method as recited in claim 17, wherein the step of providing the ground potential comprises connecting a ground supply to the computer chassis.
Claim 23
Dependent Claim
32 words
The method as recited in claim 17, wherein the step of moving the board occurs simultaneous with inserting an edge of the board into connectors configured upon a backplane of said chassis.
References Cited (Backward Citations)
US2869107A
Cited
US4640561A
Cited
US4755147A
Cited
US4907975A
Cited
US4921431A
Cited
US5080597A
Cited
US5391098A
Cited
US5267125A
Cited
US5451167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-14 | 2001-01-13 | 2001-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-14 | 2005-01-13 | 2005-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-14 | 2009-01-13 | 2009-07-15 | $7700.00 | Window Closed / Lapsed |