US4804172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixture for mounting a heat sink
Assignee: Advanced Micro Devices Inc
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Filing: 1987-11-24
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Granted: 1989-02-14
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Expires: 2007-11-24
Abstract
Abstract A fixture for mounting and aligning a heat sink to a PGA chip package disposed in a Murphy-type carrier includes a substantially flat, rectangularly-shaped plate (51), a first end portion (53a), and a second end portion (53b). The plate member (51) has a top surface (54) and a bottom surface (52). The plate member (51) further includes a top side edge (44), a bottom side edge (46), a left side edge (48) and a right side edge (50). Retaining means are formed in a central portion of the bottom surface (52) of the plate member (51) to releasably hold the heat sink. The first and second end portions (53a, 53b) are pivotally connected on opposite sides of two of the four side edges (44-50) of the plate member (51) and include hooked portions (70a, 70b) for releasably engaging a bottom surface of the Murphy-type carrier. The first and second end portions (53a, 53 b) further include actuating members (66a, 66b) for moving outwardly the hooked portions (70a, 70b) away from the center of the plate member (51) when they are squeezed toward each other so as to permit mounting or removal of the fixture to the Murphy-type carrier.
Inventors
- 👤 Paul J. Sokolovsky
- 👤 Chuck Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:00
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/641
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
310 words
A fixture for mounting and aligning a heat sink to a PGA chip package disposed in a Murphy-type carrier, said fixture comprising: a substantially flat, rectangular-shaped plate member (51) having a top surface (54) and a bottom surface (52), said plate member (51) being formed of a top side edge (44), bottom side edge (46), left side edge (48) and a right side edge (50); a first end portion (53a) being formed of a rectangular shape and joined at its intermediate area to the left side edge (48) of said plate member (51); a second end portion (53b) being formed of a rectangular shape and joined at its intermediate area to the right side edge (50) of said plate member (51); retaining means being formed in a central portion of the bottom surface (52) for releasably holding the heat sink; said first end portion (53a) including a first member (66a) extending vertically above the top surface (54) of said plate member (51) and a second member (68a) extending vertically below the bottom surface (52) of said plate member (51); said second member (68a) of said first end portion (53a) having a hooked portion (70a) disposed at its lower end; said second end portion (53b) including a first member (66b) extending vertically above the top surface (54) of said plate member (51) and a second member (68b) extending vertically below the bottom surface (52) of said plate member (51); said second member (68b) of said second end portion (53b) having a hooked portion (70b) disposed at its lower end; and said hooked portions (70a, 70b) being moved outwardly away from the central portion of the fixture when said first members (66a, 66b) of the respective first and second end portions (53a, 53b) are squeezed toward each other so as to permit mounting or removal of the fixture to the Murphy-type carrier.
Claim 2
Dependent Claim
310 words
A fixture for mounting and aligning a heat sink to a PGA chip package disposed in a Murphy-type carrier, said fixture comprising: a substantially flat, rectangular-shaped plate member (51) having a top surface (54) and a bottom surface (52), said plate member (51) being formed of a top side edge (44), bottom side edge (46), left side edge (48) and a right side edge (50); a first end portion (53a) being formed of a rectangular shape and joined at its intermediate area to the left side edge (48) of said plate member (51); a second end portion (53b) being formed of a rectangular shape and joined at its intermediate area to the right side edge (50) of said plate member (51); retaining means being formed in a central portion of the bottom surface (52) for releasably holding the heat sink; said first end portion (53a) including a first member (66a) extending vertically above the top surface (54) of said plate member (51) and a second member (68a) extending vertically below the bottom surface (52) of said plate member (51); said second member (68a) of said first end portion (53a) having a hooked portion (70a) disposed at its lower end; said second end portion (53b) including a first member (66b) extending vertically above the top surface (54) of said plate member (51) and a second member (68b) extending vertically below the bottom surface (52) of said plate member (51); said second member (68b) of said second end portion (53b) having a hooked portion (70b) disposed at its lower end; and said hooked portions (70a, 70b) being moved outwardly away from the central portion of the fixture when said first members (66a, 66b) of the respective first and second end portions (53a, 53b) are squeezed toward each other so as to permit mounting or removal of the fixture to the Murphy-type carrier.
Claim 3
Dependent Claim
43 words
A fixture as claimed in claim 1, wherein said retaining means comprises a plurality of vertical projections (56) disposed on the bottom surface (52) of said plate member (51) and being spaced apart at equal distances from the center portion of the fixture.
Claim 4
Dependent Claim
26 words
A fixture as claimed in claim 2, wherein said vertical projections (56) are positioned adjacent at least two oppositely disposed sides of said plate member (51).
Claim 5
Dependent Claim
19 words
A fixture as claimed in claim 3, wherein the number of said vertical projections (56) is at least two.
Claim 6
Dependent Claim
32 words
A fixture as claimed in claim 1, further comprising first support means extending downwardly from the bottom surface (52) of said plate member (51) for engaging a top surface of said carrier.
Claim 7
Dependent Claim
34 words
A fixture as claimed in claim 5, wherein said first support means comprises a plurality of legs (58a-58d) disposed adjacent said second members (68a, 68b) of said first and second end portions (53a, 53b).
Claim 8
Dependent Claim
36 words
A fixture as claimed in claim 6, further comprising second support means extending vertically from the top surface (54) of said plate member (51) for engaging a bottom edges of another carrier which is stacked thereabove.
Claim 9
Dependent Claim
34 words
A fixture as claimed in claim 7, wherein said second support means comprises a plurality of second legs (60) disposed diametrically opposite said first legs (58a-58d) on the bottom surface (52) of the fixture.
Claim 10
Dependent Claim
35 words
A fixture as claimed in claim 8, wherein said second legs (60) each has a cut-out (62) at its free end so as to receive the bottom edges of said another carrier, thereby facilitating stacking.
Claim 11
Dependent Claim
17 words
A fixture as claimed in claim 1, wherein said fixture is formed of a single-piece molded configuration.
Claim 12
Dependent Claim
16 words
A fixture as claimed in claim 10, wherein said fixture is molded from a thermoplastic material.
Claim 13
Dependent Claim
127 words
A fixture for mounting and aligning a heat sink to a PGA chip package disposed in a Murphy-type carrier, said fixture comprising: plate member means (51) being formed of four sides, a top surface, and a bottom surface; retaining means being formed on the bottom surface of said plate member means for receiving the heat sink therein; end member means pivotally connected on opposite sides of two of said four sides of said plate member means and including hooked portion for releasably engaging a bottom surface of said carrier; and said end member means further including actuating means for moving outwardly said hooked portions away from the center of said plate member means so as to permit the mounting or removal of the fixture to the carrier.
Claim 14
Dependent Claim
127 words
A fixture for mounting and aligning a heat sink to a PGA chip package disposed in a Murphy-type carrier, said fixture comprising: plate member means (51) being formed of four sides, a top surface, and a bottom surface; retaining means being formed on the bottom surface of said plate member means for receiving the heat sink therein; end member means pivotally connected on opposite sides of two of said four sides of said plate member means and including hooked portion for releasably engaging a bottom surface of said carrier; and said end member means further including actuating means for moving outwardly said hooked portions away from the center of said plate member means so as to permit the mounting or removal of the fixture to the carrier.
Claim 15
Dependent Claim
44 words
A fixture as claimed in claim 12, wherein said retaining means comprises a plurality of vertical projections (56) disposed in the bottom surface (52) of said plate member means (51) and being spaced apart at equal distances from the center portion of the fixture.
Claim 16
Dependent Claim
27 words
A fixture as claimed in claim 13, wherein said vertical projections (56) are positioned adjacent at least two oppositely disposed sides of said plate member means (51).
Claim 17
Dependent Claim
19 words
A fixture as claimed in claim 14, wherein the number of said vertical projections (56) is at least two.
Claim 18
Dependent Claim
33 words
A fixture as claimed in claim 12, further comprising first support means extending downwardly from the bottom surface (52) of said plate member means (51) for engaging a top surface of said carrier.
Claim 19
Dependent Claim
37 words
A fixture as claimed in claim 16, further comprising second support means extending vertically from the top surface (54) of said plate member means (51) for engaging a bottom edges of another carrier which is stacked thereabove.
Claim 20
Dependent Claim
17 words
A fixture as claimed in claim 12, wherein said fixture is formed of a single-piece molded configuration.
Claim 21
Dependent Claim
16 words
A fixture as claimed in claim 18, wherein said fixture is molded from a thermoplastic material.
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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |