Patent US4515425A successfully refreshed from Google Patents.
US4515425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IC socket with IC package pressing means
Assignee: Yamaichi Electronics Co Ltd
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Filing: 1984-02-28
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Granted: 1985-05-07
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Expires: 2004-02-28
Abstract
Abstract An IC socket with IC package pressing means comprises a socket substrate, an IC package pressing plate having one end thereof pivotally link-connected to one end of the socket substrate, and an operative lever having one end thereof pivotally link-connected to the other end of the IC package pressing plate and provided with engaging claw pieces which collide against the other end of the socket substrate, lead the IC package pressing plate and the operative lever to their respective laid-down positions relative to the socket substrate and engage with the aforementioned other end of the socket substrate.
Inventors
- 👤 Hidetaka Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/10; H05K7/1053; H05K7/1061; H05K7/1069
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
350 words
An IC socket with IC package pressing means, which comprises: a socket substrate provided therein with contact accommodation grooves, on the upper surface thereof with an attachment portion for attaching an IC package thereto, and on opposite sides of one end thereof with a pair of receiving portions; an IC package pressing plate having one end thereof link-connected pivotally to the other end of said socket substrate with first pivots as fulcrums to be rotated about said first pivots and raised and laid down relative to the upper surface of said socket substrate, and an operative lever having one end thereof link-connected pivotally to the other end of said IC package pressing plate with second pivots as fulcrums to be rotated about said second pivots and raised and laid down relative to the upper surface of said IC package pressing plate, and having a pair of engaging claw pieces disposed on the side of said second pivots to extend in a direction opposite to the other end of said operative lever and adapted to collide against and engage with the lower surfaces of said pair of receiving portions of said socket substrate, whereby said operative lever is rotated about said second pivots in a state wherein the upper surfaces of said pair of engaging claw pieces are brought into collision with the lower surfaces of said pair of receiving portions to be laid down on the upper surface of said IC package pressing plate, and said other end of said IC package pressing plate is given downward force by the rotation of said operative lever to allow said IC package pressing plate to be rotated about said first pivots and laid down on the upper surface of said socket substrate, and thereby said operative lever and said IC package pressing plate are laid down on the upper surface of said socket substrate as overlapping each other with said pair of engaging claw pieces brought into engagement with said pair of receiving portions to press the upper surface of said IC package attached to said attachment portion of said socket substrate.
Claim 2
Dependent Claim
350 words
An IC socket with IC package pressing means, which comprises: a socket substrate provided therein with contact accommodation grooves, on the upper surface thereof with an attachment portion for attaching an IC package thereto, and on opposite sides of one end thereof with a pair of receiving portions; an IC package pressing plate having one end thereof link-connected pivotally to the other end of said socket substrate with first pivots as fulcrums to be rotated about said first pivots and raised and laid down relative to the upper surface of said socket substrate, and an operative lever having one end thereof link-connected pivotally to the other end of said IC package pressing plate with second pivots as fulcrums to be rotated about said second pivots and raised and laid down relative to the upper surface of said IC package pressing plate, and having a pair of engaging claw pieces disposed on the side of said second pivots to extend in a direction opposite to the other end of said operative lever and adapted to collide against and engage with the lower surfaces of said pair of receiving portions of said socket substrate, whereby said operative lever is rotated about said second pivots in a state wherein the upper surfaces of said pair of engaging claw pieces are brought into collision with the lower surfaces of said pair of receiving portions to be laid down on the upper surface of said IC package pressing plate, and said other end of said IC package pressing plate is given downward force by the rotation of said operative lever to allow said IC package pressing plate to be rotated about said first pivots and laid down on the upper surface of said socket substrate, and thereby said operative lever and said IC package pressing plate are laid down on the upper surface of said socket substrate as overlapping each other with said pair of engaging claw pieces brought into engagement with said pair of receiving portions to press the upper surface of said IC package attached to said attachment portion of said socket substrate.
Claim 3
Dependent Claim
102 words
The IC socket with IC package pressing means according to claim 1, wherein said IC package pressing plate is provided with engaging means which are brought into frictional engagement with the lateral sides of said socket substrate when being laid down on the upper surface of said socket substrate, and said operative lever is provided with engaging means which are brought into frictional engagement with said engaging means of said IC package pressing plate when being laid down on the upper surface of said IC package pressing plate, whereby said IC package pressing plate and said operative lever are pevented from rising.
Claim 4
Dependent Claim
89 words
The IC socket with IC package pressing means according to claim 1, further comprising a convex formed on one of said IC package pressing plate and said operative lever, and a concave formed in the other of said IC package pressing plate and said operative lever, said convex and said concave being brought into snap engagement with each other when said operative lever is laid down on the upper surface of said IC package pressing plate, thereby preventing said IC package pressing plate and said operative lever from rising.
Claim 5
Dependent Claim
90 words
The IC socket with IC package pressing means according to claim 1, wherein the upper surfaces of said pair of engaging claw pieces are flat engaging surfaces and the lower surfaces of said pair of receiving portions are flat engaging surfaces, and said flat engaging surfaces of said pair of engaging claw pieces and said pair of receiving portions being brought to surface joint in a substantially horizontal state when said IC package pressing plate and said operative lever overlap each other on the upper surface of said socket substrate.
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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |