US3863113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular formed wire cardcage
Assignee: Individual
•
Filing: 1974-01-04
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Granted: 1975-01-28
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Expires: 1994-01-04
Abstract
Abstract A modular printed circuit board cardcage of formed wire card guide and retainer members fastened to transverse support rods within a semi-enclosure structure. Cardcage modules of different sizes and shapes are configured to accommodate various printed circuit board size and quantity requirements. Each printed circuit board is securely mounted to withstand shock and vibration forces but is readily accessible and removable for maintenance in a modular cardcage structure with optiminally high printed circuit board packaging density and minimal obstruction to the flow of component cooling air.
Inventors
- 👤 Llyd G Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:07
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1422; H05K7/1424; H05K7/1425
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
84 words
A board edge guide for use in a modular cardcage structure with board edge guides used in aligned pairs with: said board edge guide formed from a single length of wire; said single length of wire being bent back upon itself at a midregion to form two parallel legs open at one end and joined with the midregion forming a closed end; and intermediate transversely aligned bends in said parallel legs to facilitate mounting of said board edge guide in a modular cardcage structure.
Claim 2
Dependent Claim
84 words
A board edge guide for use in a modular cardcage structure with board edge guides used in aligned pairs with: said board edge guide formed from a single length of wire; said single length of wire being bent back upon itself at a midregion to form two parallel legs open at one end and joined with the midregion forming a closed end; and intermediate transversely aligned bends in said parallel legs to facilitate mounting of said board edge guide in a modular cardcage structure.
Claim 3
Dependent Claim
21 words
The board edge guide of claim 1, wherein said parallel legs are spaced apart to guide and retain a board edge.
Claim 4
Dependent Claim
22 words
The board edge guide of claim 2, wherein said parallel leg open ends are straight for insertion in alignment guide holder holes.
Claim 5
Dependent Claim
23 words
The board edge guide of claim 2, wherein said parallel leg open ends are bent at angles forming a board reverse insertion guide.
Claim 6
Dependent Claim
85 words
A modular cardcage having: a plurality of board edge guides used in pairs with each formed from a single length of wire; said single length of wire being bent back upon itself at a midregion to form two parallel legs open at one end and joined with the midregion forming a closed end, a plurality of transverse support members; structural interconnecting means for said transverse members; and intermediate bends in said parallel legs for mounting of said board edge guide on said transverse support members.
Claim 7
Dependent Claim
85 words
A modular cardcage having: a plurality of board edge guides used in pairs with each formed from a single length of wire; said single length of wire being bent back upon itself at a midregion to form two parallel legs open at one end and joined with the midregion forming a closed end, a plurality of transverse support members; structural interconnecting means for said transverse members; and intermediate bends in said parallel legs for mounting of said board edge guide on said transverse support members.
Claim 8
Dependent Claim
55 words
The modular cardcage of claim 5, wherein a plurality of pairs of said circuit board guides are mounted on transverse support members; and each said pair of guides are spaced apart and facing one another in mirror-image fashion to guide and hold a circuit board between said two circuit board edge guides forming a pair.
Claim 9
Dependent Claim
28 words
The modular cardcage of claim 6, wherein said closed end is bent at an angle to said parallel legs to form an insertion guide for said circuit board.
Claim 10
Dependent Claim
41 words
The modular cardcage of claim 7, wherein said angle bent closed end overlaps a tab projection on a corner of said board when the board is fully inserted to retain said board fully inserted in said pair of circuit board guides.
Claim 11
Dependent Claim
55 words
The modular cardcage of claim 7, wherein one of each pair of said board guides having said angle bent closed ends is also bent to cause said angle bent closed end to overlap a board right angled corner and act as a retainer holding said board fully inserted in said pair of circuit board guides.
Claim 12
Dependent Claim
34 words
The modular cardcage of claim 7, wherein said cardcage is coated with a thermosetting protective coating having adhesive properties to aid in holding said board guides in assembled contact with said transverse support members.
Claim 13
Dependent Claim
27 words
The modular cardcage of claim 5, wherein said board guides are held in assembled positions of contact with said transverse support members by longitudinally extended resilient clips.
Claim 14
Dependent Claim
27 words
The modular cardcage of claim 5, wherein said board guides are held in assembled positions of contact with said transverse support members by bands of heat-shrunk material.
Claim 15
Dependent Claim
27 words
The modular cardcage of claim 5, wherein saiD board guides are fastened in assembled positions of contact with said transverse support members by a metal bonding process.
References Cited (Backward Citations)
US3269547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |