US3851222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed wiring card stiffener bracket
Assignee: AG Communication Systems Corp
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Filing: 1973-12-17
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Granted: 1974-11-26
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Expires: 1993-12-17
Abstract
Abstract A printed wiring card stiffener bracket including a handle portion and two extending arms having novel tab arrangements that engage and secure both sides of the printed wiring card for preventing card distortion and for assisting in the insertion of the card in a card file.
Inventors
- 👤 B Michalak
- 👤 A Bertellotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1461; H05K1/00; H05K1/02; H05K1/0271
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
256 words
A printed wiring card stiffener bracket, comprising: a handle portion extending along the edge of the printed circuit card to be stiffened that is exposed when the card is inserted into a card file, said handle portion including means for mounting the handle portion to the printed wiring card, the printed wiring card including appropriate apertures formed therein in alignment with said mounting means; and blade arm portions extending substantially perpendicular from each end of said handle portion and along the edges of the printed circuit card that adjoins the handle portion edge, said blade arm portions including tab means for engaging said printed wiring card being disposed along said blade arm portions at intervals suitable to stiffen said printed circuit card and prevent warpage and linear distortion, said engaging tab means including a rectangular portion extending from said blade arm edge being adjacent the printed wiring card and an Lshaped portion extending from said rectangular tab portion so as to form a slot between said rectangular and L-shaped tab portions, said L-shaped portion adapted to extend through slots in the printed wiring card being of larger dimension that said L-shaped portions with said stiffener bracket being moved in a direction such that the printed wiring board is engaged by said engaging tab means with the printed wiring card portion adjacent the slot moving into said slot formed between said tab portions, said handle portion being mounted to said printed wiring board after said tab engaging means are in engagement with said printed wiring card surfaces.
Claim 2
Dependent Claim
256 words
A printed wiring card stiffener bracket, comprising: a handle portion extending along the edge of the printed circuit card to be stiffened that is exposed when the card is inserted into a card file, said handle portion including means for mounting the handle portion to the printed wiring card, the printed wiring card including appropriate apertures formed therein in alignment with said mounting means; and blade arm portions extending substantially perpendicular from each end of said handle portion and along the edges of the printed circuit card that adjoins the handle portion edge, said blade arm portions including tab means for engaging said printed wiring card being disposed along said blade arm portions at intervals suitable to stiffen said printed circuit card and prevent warpage and linear distortion, said engaging tab means including a rectangular portion extending from said blade arm edge being adjacent the printed wiring card and an Lshaped portion extending from said rectangular tab portion so as to form a slot between said rectangular and L-shaped tab portions, said L-shaped portion adapted to extend through slots in the printed wiring card being of larger dimension that said L-shaped portions with said stiffener bracket being moved in a direction such that the printed wiring board is engaged by said engaging tab means with the printed wiring card portion adjacent the slot moving into said slot formed between said tab portions, said handle portion being mounted to said printed wiring board after said tab engaging means are in engagement with said printed wiring card surfaces.
Claim 3
Dependent Claim
55 words
The printed wiring card stiffener bracket as recited in claim 1 wherein said rectangular tab portions and said L-shaped portions of said tab engaging means are adapted to be engagement with said printed wiring card such that the entire length of said rectangular tab portions engage the directly adjacent services of said printed wiring card.
Claim 4
Dependent Claim
37 words
The printed wiring card stiffener bracket as recited in claim 2 wherein said handle portion includes cut away portions at each end of said handle portion adapted to receive the extractor arms of a conventional extractor tool.
Claim 5
Dependent Claim
46 words
The printed wiring card stiffener bracket as recited in claim 2 wherein said mounting means are rivets and said handle portion includes apertures aligned with the apertures of said printed wiring card, said printed wiring card and said handle portion being joined by a riveting operation.
Claim 6
Dependent Claim
30 words
The printed wiring card stiffener bracket as recited in claim 2 further characterized in that said handle portions and said arm portions are formed from a continuous piece of material.
Claim 7
Dependent Claim
16 words
The printed wiring card stiffener bracket as recited in claim 5 wherein said material is aluminum.
Claim 8
Dependent Claim
45 words
The printed wiring card stiffener bracket as recited in claim 2 further characterized by connecting means and wherein said handle portion and said arm portions are formed from separate pieces of material, said handle portion and said arm portions being joined by said connecting means.
Claim 9
Dependent Claim
17 words
The printed wiring card stiffener bracket as recited in claim 7 wherein said connecting means are screws.
Claim 10
Dependent Claim
17 words
The printed wiring card stiffener bracket as recited in claim 7 wherein said connecting means are rivets.
Claim 11
Dependent Claim
23 words
The printed wiring card stiffener bracket as recited in claim 7 wherein said connecting means are twist tabs carried by said arm portions.
Claim 12
Dependent Claim
43 words
The printed wiring card stiffener bracket as recited in claim 2 further including magnetic shield means adapted to attach to said handle portion and said arm portions, said magnetic shield means including a flat metal plate covering substantially the entire printed wiring cArd.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |