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US4933746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-legged clip
Assignee: LaSalle Business Credit LLC
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Filing: 1988-09-12
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Granted: 1990-06-12
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Expires: 2008-09-12
Abstract
Abstract A resilient spring clip for attaching a semiconductor to a heat sink comprising a first surface having a first edge with a first leg projecting from a central portion of the first edge, and a second edge, parallel to the first edge and spaced apart therefrom with second and third legs projecting from the second edge, the legs being offset from each other and having heels on their ends opposite the first surface so that by flexing the legs inwardly, the heels can fit completely through slots on a heat sink, the clip being held in place when the legs unflex so that the heels engage the heat sink and cannot pass through the slots.
Inventors
- 👤 Robert D. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:00
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/641
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
262 words
A clip for attaching a semiconductor to a heat sink comprising: a first surface, a first leg means, said first leg means being connected to a first portion of said first surface, a second leg means, said second leg means being connected to a second portion of said first surface, said second portion being spaced apart from said first portion, said first surface, said first leg means and said second leg means defining three sides of an opening which is adapted to receive the semiconductor when said heat sink is in use with the semiconductor contacting said first surface, said first leg means and said second leg means being somewhat resilient and able, when force is applied, to temporarily flex in a first direction towards said semiconductor opening, said first leg means and said second leg means being offset so that they are not aligned in the direction of their flex towards said opening, said first leg means and said second leg means having a first attachment means and a second attachment means respectively, said first attachment means and said second attachment means being disposed opposite said first surface, whereby the semiconductor is attached to the heat sink by placing the semiconductor in said opening and flexing said first leg means and said second leg means in the first direction so that said first attachment means and said second attachment means pass through slots in the heat sink whereupon said first and second leg means are allowed to return to their unflexed position thereby holding said clip and the semiconductor in place.
Claim 2
Dependent Claim
262 words
A clip for attaching a semiconductor to a heat sink comprising: a first surface, a first leg means, said first leg means being connected to a first portion of said first surface, a second leg means, said second leg means being connected to a second portion of said first surface, said second portion being spaced apart from said first portion, said first surface, said first leg means and said second leg means defining three sides of an opening which is adapted to receive the semiconductor when said heat sink is in use with the semiconductor contacting said first surface, said first leg means and said second leg means being somewhat resilient and able, when force is applied, to temporarily flex in a first direction towards said semiconductor opening, said first leg means and said second leg means being offset so that they are not aligned in the direction of their flex towards said opening, said first leg means and said second leg means having a first attachment means and a second attachment means respectively, said first attachment means and said second attachment means being disposed opposite said first surface, whereby the semiconductor is attached to the heat sink by placing the semiconductor in said opening and flexing said first leg means and said second leg means in the first direction so that said first attachment means and said second attachment means pass through slots in the heat sink whereupon said first and second leg means are allowed to return to their unflexed position thereby holding said clip and the semiconductor in place.
Claim 3
Dependent Claim
13 words
The clip of claim 1 wherein said first surface has a metal plate.
Claim 4
Dependent Claim
11 words
The clip of claim 1 wherein said first surface is indented.
Claim 5
Dependent Claim
28 words
The clip of claim 1 wherein said first surface comprises a flat section bounded at opposite ends by angled sections so that said first surface is generally indented.
Claim 6
Dependent Claim
15 words
The clip of claim 1 wherein said first leg means comprises a single first leg.
Claim 7
Dependent Claim
25 words
The clip of claim 5 wherein said first leg is generally rectangular and is attached at one of its narrow sides to said first surface.
Claim 8
Dependent Claim
23 words
The clip of claim 5 wherein said first leg is attached to a central portion of a first edge of said first surface.
Claim 9
Dependent Claim
31 words
The clip of claim 7 wherein said first attachment means comprises a first projecting heel, said first heel being disposed near the end of said first leg opposite said first surface.
Claim 10
Dependent Claim
14 words
The clip of claim 8 wherein said first heel projects away from said opening.
Claim 11
Dependent Claim
31 words
The clip of claim 9 wherein a first toe piece is angled from said first heel, said first toe piece comprising the end of said first leg opposite said first surface.
Claim 12
Dependent Claim
27 words
The clip of claim 1 wherein said second leg means comprises a second leg and a third leg, said legs being separate legs which are spaced apart.
Claim 13
Dependent Claim
28 words
The clip of claim 11 where said second and third legs are generally rectangular, and both are attached at one of their narrow sides to said first surface.
Claim 14
Dependent Claim
48 words
The clip of claim 11 wherein said second leg and said third leg are attached to the ends of a second edge of said first surface, said second edge being generally parallel to and spaced apart from a first edge to which said first leg means is attached.
Claim 15
Dependent Claim
34 words
The clip of claim 13 wherein said first leg means comprises a single leg which is generally rectangular and attached at one of its narrow sides to a central portion of said first edge.
Claim 16
Dependent Claim
47 words
The clip of claim 13 wherein said second attachment means comprises a second projecting heel disposed on said second leg and a third projecting heel disposed on said third leg, said heels being disposed near the end of said second and third legs opposite said first surface.
Claim 17
Dependent Claim
48 words
The clip of claim 15 wherein said first leg means comprises a first leg attached to a central portion of a first edge of said first surface, said first attachment means comprising a first projecting heel disposed near the end of said first leg opposite said first surface.
Claim 18
Dependent Claim
16 words
The clip of claim 15 wherein said second and third heels project away from said opening.
Claim 19
Dependent Claim
43 words
The clip of claim 17 wherein a second toe piece and a third toe piece are angled from said second heel and said third heel respectively, said two toe pieces comprising the end of said second and third legs opposite said first surface.
Claim 20
Dependent Claim
46 words
The clip of claim 16 wherein said first second and third legs are disposed to fit into a pair of slots on heat sink leaving space in the slots for the legs of a similar clip to be inserted into those slots from the opposite side.
References Cited (Backward Citations)
US4509839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |