US3700156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding head for bonding beam leaded devices to a substrate
Assignee: Mech-El Ind Inc
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Filing: 1970-05-20
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Granted: 1972-10-24
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Expires: 1990-05-20
Abstract
Abstract An improved beam leaded bonding method and head wherein a bonding surface is caused to individually and successively contact and bond each of a plurality of electrical leads projecting from around the periphery of a beam leaded device onto a substrate. A particular mechanical bonding head is illustrated for moving a bonding tool in a complex ''''wobbling'''' fashion to produce the desired individual and successive automatic lead bonding.
Inventors
- 👤 Leonard S Hermanns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:18
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0446; B; B23; B23K; B23K20/00; B23K20/10; B23K20/106; H05; H05K; H05K13/00; H05K13/04; H05K13/046; H05K13/0465; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
An apparatus for bonding electrical leads projecting from a beam leaded device onto mating conductive surfaces on a substrate using a bonding surface disposed substantially about the periphery of one end of a bonding tool, said apparatus comprising: mounting means for mounting said tool in radial fashion with the longitudinal axis of said tool perpendicular to the longitudinAl axis of said mounting means, said mounting means permitting predetermined adjustable wobbling movements of said tool whereby said bonding surface may sequentially make a bonding contact with said electrical leads, while compensating for lateral displacement of the beam leaded device and the individual leads and while compensating for unequal distances of the point of bond from the center point of the beam leaded device; and driving means for causing said mounting means to undertake said predetermined adjustable wobbling movements thereby permitting each of said electrical leads to be substantially individually and sequentially bonded to said substrate.
Claim 2
Independent Claim
154 words
An apparatus for bonding electrical leads projecting from a beam leaded device onto mating conductive surfaces on a substrate using a bonding surface disposed substantially about the periphery of one end of a bonding tool, said apparatus comprising: mounting means for mounting said tool in radial fashion with the longitudinal axis of said tool perpendicular to the longitudinAl axis of said mounting means, said mounting means permitting predetermined adjustable wobbling movements of said tool whereby said bonding surface may sequentially make a bonding contact with said electrical leads, while compensating for lateral displacement of the beam leaded device and the individual leads and while compensating for unequal distances of the point of bond from the center point of the beam leaded device; and driving means for causing said mounting means to undertake said predetermined adjustable wobbling movements thereby permitting each of said electrical leads to be substantially individually and sequentially bonded to said substrate.
Claim 3
Dependent Claim
53 words
An apparatus as in claim 1 including: a transducer mount in radial alignment with said bonding tool for mounting and wobbling an ultrasonic transducer, the longitudinal axis of said transducer mount perpendicular to the longitudinal axis of said bonding tool, for supplying bonding energy to said tool at least during said wobbling movements.
Claim 4
Dependent Claim
82 words
An apparatus as in claim 2 wherein said radial mounting means comprises: a supporting shaft for holding said bonding tool; a transducer mounting block connected to one end of said supporting shaft in radial alignment with said bonding tool; an ultrasonic transducer mounted on said transducer mounting block; a beam having two ends; an unsupported universal pivot effectively connected to said supporting shaft at one end of said beam; and a rotatably supported universal pivot at the other end of said beam.
Claim 5
Dependent Claim
51 words
An apparatus as in claim 3 wherein said driving means comprises: a self-aligning universally pivoted bearing; a bearing support attached to said supporting shaft and to said unsupported pivot; and rotating means for moving the center of said bearing along a substantially circular path which is substantially transverse to said beam.
Claim 6
Dependent Claim
107 words
An apparatus as in claim 4 wherein said rotating means is driven by an electric motor having a rotatable shaft and wherein said rotating means further includes: a driving shaft for slidable connection to the center of said bearing; and a coupling for angularly coupling said drive shaft to the said electric motor shaft thereby causing said drive shaft to generate a generally conical surface of revolution upon rotation of said electric motor shaft, and causing said bearing to move in a predetermined path generally corresponding to the wobbling movement of the bonding tool about the periphery of the beam leaded device as it bonds each lead.
Claim 7
Dependent Claim
22 words
An apparatus as in claim 5 wherein said coupling effects a preset angle between said drive shaft and said electric motor shaft.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |