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US4717346A Expired / Lapsed US ⏱️ 0.0 years remaining

IC socket

Assignee: Fujitsu Ltd
•
Filing: 1986-12-12
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Granted: 1988-01-05
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Expires: 2006-12-12
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Abstract

Abstract An integrated circuit (IC) socket comprising: a socket body of molded resin having a plurality of recesses for receiving a leadless chip carrier (LCC) type of IC device; and a cover which commonly covers the plurality of recesses for receiving an LCC type of IC device and presses said LCC type of IC device.

Inventors

  • 👤 Tsutomu Yoshizaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 20:39
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/10; H05K7/1015; H05K7/1023

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 357 words
An IC socket for leadless chip carrier type IC device, said IC socket comprising: a socket body of molded resin having a plurality of recesses for receiving a plurality of said IC devices; a cover which commonly covers said plurality of recesses for receiving said IC devices and which biases said IC devices toward said socket body; a plurality of springy contacts arranged in said socket body, each contact resiliently contacting corresponding electrodes of the IC device from the bottom side thereof; said cover being pivotally mounted on said socket body at an end thereof and including, (a) a first spring biasing said cover to the open position (b) a locking lever having a hook on a tip thereof and being pivotally mounted on said cover at the end opposite from said first spring, said hook being engaged with a latching recess in said socket body for securing said cover in the closed position and (c) a second spring biasing said hook to the closed position for engagement with said latching recess, said hook having a tapered surface which abuts said socket body during closing to force said locking lever and hook against the biasing force of said second spring, away from said latching recess to allow said hook to latch with said latching recess; and an opening in the bottom each said recess of said socket body, such that an IC device in said recess may be pushed outward from said recess by an object inserted through said opening; wherein said socket body includes grooves in which said springy contacts are disposed, said grooves being positioned at the sides of each of said recesses on an upper surface thereof, each of said grooves opening at an upper edge of a side surface of said socket body, and wherein each of said springy contacts comprise a U-shaped springy portion having an upward projection formed at an end of one leg of said U-shaped springy portion, and an integral pin-like lead terminal projection perpendicularly from the bottom surface of said socket body, said lead terminal being formed on the other leg of leg of said U-shaped springy portion.
Claim 2
Dependent Claim 357 words
An IC socket for leadless chip carrier type IC device, said IC socket comprising: a socket body of molded resin having a plurality of recesses for receiving a plurality of said IC devices; a cover which commonly covers said plurality of recesses for receiving said IC devices and which biases said IC devices toward said socket body; a plurality of springy contacts arranged in said socket body, each contact resiliently contacting corresponding electrodes of the IC device from the bottom side thereof; said cover being pivotally mounted on said socket body at an end thereof and including, (a) a first spring biasing said cover to the open position (b) a locking lever having a hook on a tip thereof and being pivotally mounted on said cover at the end opposite from said first spring, said hook being engaged with a latching recess in said socket body for securing said cover in the closed position and (c) a second spring biasing said hook to the closed position for engagement with said latching recess, said hook having a tapered surface which abuts said socket body during closing to force said locking lever and hook against the biasing force of said second spring, away from said latching recess to allow said hook to latch with said latching recess; and an opening in the bottom each said recess of said socket body, such that an IC device in said recess may be pushed outward from said recess by an object inserted through said opening; wherein said socket body includes grooves in which said springy contacts are disposed, said grooves being positioned at the sides of each of said recesses on an upper surface thereof, each of said grooves opening at an upper edge of a side surface of said socket body, and wherein each of said springy contacts comprise a U-shaped springy portion having an upward projection formed at an end of one leg of said U-shaped springy portion, and an integral pin-like lead terminal projection perpendicularly from the bottom surface of said socket body, said lead terminal being formed on the other leg of leg of said U-shaped springy portion.
Claim 3
Dependent Claim 19 words
The IC socket of claim 1, wherein said cover is longitudinally corrupgated between said first spring and said hook.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-01-04 1991-07-06 1992-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-01-04 1995-07-06 1996-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-01-04 1999-07-06 2000-01-05 $7700.00 Window Closed / Lapsed

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