US3673669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making side entry card guides
Assignee: Unisys Corp
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Filing: 1970-11-19
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Granted: 1972-07-04
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Expires: 1990-11-19
Abstract
Abstract A method of forming a device for guiding and supporting a plurality of printed circuit cards incorporating electronic circuitry is disclosed. The device is formed of two sheet members having a series of tabs formed therefrom. The tabs of the two sheet members are oriented with the tabs of one sheet member extending through corresponding openings in the second sheet member forming pairs of opposing tabs between which printed circuit cards are compressively restrained. The sheet members may be of heat conductive and/or electrically conductive materials to function as a heat sink coupling means and/or as a ground/voltage bus for side entry of printed circuit cards.
Inventors
- 👤 Woodrow O Edstrom
- 👤 Charles H Norling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1417; H05K7/1418; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
The method of forming a side-entry card guide, comprising: forming a first series of spaced apart tabs and associated openings from and in a first sheet member; forming a second series of spaced apart tabs and associated openings from and in a second sheet member; reversing the orientation of said first and second series of tabs in a superposed manner; passing the individual tabs of said first series of tabs through corresponding individual ones of said openings in said second sheet member; forming a plurality of pairs of opposing tabs from corresponding tabs of said first and second series of tabs; and, forming a plurality of fixed opposing tabs from said plurality of pairs of opposing tabs by affixing said first and second sheet members to each other.
Claim 2
Independent Claim
128 words
The method of forming a side-entry card guide, comprising: forming a first series of spaced apart tabs and associated openings from and in a first sheet member; forming a second series of spaced apart tabs and associated openings from and in a second sheet member; reversing the orientation of said first and second series of tabs in a superposed manner; passing the individual tabs of said first series of tabs through corresponding individual ones of said openings in said second sheet member; forming a plurality of pairs of opposing tabs from corresponding tabs of said first and second series of tabs; and, forming a plurality of fixed opposing tabs from said plurality of pairs of opposing tabs by affixing said first and second sheet members to each other.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which said first and second series of tabs are identical in pattern.
Claim 4
Dependent Claim
22 words
The method of claim 1 in which said first and second sheet members are formed of a heat and electrically conductive material.
Claim 5
Dependent Claim
22 words
The method of claim 1 in which said tabs are formed from said first and second sheet members by a punching process.
Claim 6
Dependent Claim
25 words
The method of claim 1 in which said tabs are bent up from the planes of said first and second sheet members at approximately 77*.
Claim 7
Dependent Claim
22 words
The method of claim 1 in which the sides of said tabs are formed with flanges extending away from the opposing tab.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |