Patent US3924918A successfully refreshed from Google Patents.
US3924918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Daughter board contact
Assignee: FCI Americas Technology LLC
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Filing: 1973-10-09
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Granted: 1975-12-09
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Expires: 1993-10-09
Abstract
Abstract An electrical connection between spaced and parallel mother and daughter boards including terminals secured to the mother board and projecting toward the daughter board having a pivot link arm with a daughter board-engaging member at the free end of the link arm and a daughter board spring contact. A number of terminals are secured to the mother board all facing in the same direction so that upon movement of the daughter board in a direction parallel to the mother board the links pivot the daughter board down toward the mother board and bring contact pads on the daughter board in engagement with the spring contacts.
Inventors
- 👤 Lindsay Carlton Friend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:55
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/70; H01R12/71; H01R12/712; H01R12/714; H05; H05K; H05K3/00; H05K3/36; H05K3/368; H05K2201/00; H05K2201/03; H05K2201/0302; H05K2201/0311; H05K2201/10; H05K2201/10613; H05K2201/10742; H05K2201/1075; H05K2201/10871; H05K3/30; H05K3/32; H05K3/325; H05K3/34; H05K3/3447
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A daughter board contact system comprising a mother board, a number of terminals secured to the mother board in spaced relation and extending from one side thereof with each terminal including a link-arm and a daughter-board engaging hook at the free end of the arm, a number of spring contacts extending outwardly of said side of the mother board, a daughter board having a number of hook-receiving openings thereon and contact pads on one side thereof for forming electrical connections with said spring contacts, the hooks engaging said openings so that the arms space the mother and daughter board relative to one another and said spring contacts being biased against said pads to form electrical connections between the mother and daughter boards, and means holding the mother and daughter boards together against the spring force of the spring contacts.
Claim 2
Dependent Claim
139 words
A daughter board contact system comprising a mother board, a number of terminals secured to the mother board in spaced relation and extending from one side thereof with each terminal including a link-arm and a daughter-board engaging hook at the free end of the arm, a number of spring contacts extending outwardly of said side of the mother board, a daughter board having a number of hook-receiving openings thereon and contact pads on one side thereof for forming electrical connections with said spring contacts, the hooks engaging said openings so that the arms space the mother and daughter board relative to one another and said spring contacts being biased against said pads to form electrical connections between the mother and daughter boards, and means holding the mother and daughter boards together against the spring force of the spring contacts.
Claim 3
Dependent Claim
26 words
A daughter board contact system as in claim 1 wherein said means comprises flexible latches mounted on the mother board and engagable with the daughter board.
Claim 4
Dependent Claim
24 words
A daughter board contact system as in claim 2 wherein said link arms normally extend away from the mother board at an acute angle.
Claim 5
Dependent Claim
19 words
A daughter board contact system as in claim 2 including a spring contact arm integral with each link arm.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |