US4030657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire lead bonding tool
Assignee: RCA Corp
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Filing: 1972-12-26
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Granted: 1977-06-21
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Expires: 1992-12-26
Abstract
Abstract A bonding tool for ultrasonically bonding wire leads is provided with a bonding tip having a pitted bonding surface thereby providing improved tool gripping action with respect to the lead that is being bonded.
Inventors
- 👤 Harvey Dow Gibson Scheffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:29
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/002; B23K20/004; B23K20/005; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/50; H10W72/531; H10W72/5363
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A wire bonding tool for ultrasonically bonding a lead to a contact comprising: an elongated shank portion extending in a first direction, a tip portion disposed at one end of said shank portion, said tip portion having a forward edge, a rearward edge and a planar bottom surface for engaging said lead during said bonding, said bottom surface tapering toward said shank portion in a second direction from said forward edge to said rearward edge such that said bottom surface forms an angle of less than 90° with said first direction.
Claim 2
Dependent Claim
91 words
A wire bonding tool for ultrasonically bonding a lead to a contact comprising: an elongated shank portion extending in a first direction, a tip portion disposed at one end of said shank portion, said tip portion having a forward edge, a rearward edge and a planar bottom surface for engaging said lead during said bonding, said bottom surface tapering toward said shank portion in a second direction from said forward edge to said rearward edge such that said bottom surface forms an angle of less than 90° with said first direction.
Claim 3
Dependent Claim
17 words
The tool of claim 1 wherein said angle is in the range of 85° to 89° .
References Cited (Backward Citations)
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US3627192A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |