US3669333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding with a compliant medium
Assignee: AT&T Inc
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Filing: 1970-02-02
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Granted: 1972-06-13
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Expires: 1990-02-02
Abstract
Abstract A plurality of independently displaceable pins are employed to apply bonding pressure to a compliant medium at widely spaced bonding sites. The pins permit compensation for workpiece irregularities between the bonding sites such as substrate waviness, warpage, lack of parallelism, etc., while the compliant medium compensates for localized workpiece irregularities such as variations in the thickness of leads and/or land areas.
Inventors
- 👤 Alexander Coucoulas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:00
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0446; B; B23; B23K; B23K20/00; B23K20/002; B23K20/004; B23K20/005; B23K20/007; B23K20/10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/20; H10W72/251; H10W72/252
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
95 words
A jig for clamping a multi-leaded device to a substrate for bonding thereto comprising: an apertured plate, the apertures of said plate corresponding in number and position to the leads of said device; a pin slidably mounted in each said aperture for transmitting a clamping force to retain one of said leads; spring means engaging each said pin and said plate and tending to force each said pin in a direction axially along the associated aperture to provide said clamping force; and means associated with each said pin for retaining said pin in said aperture.
Claim 2
Dependent Claim
95 words
A jig for clamping a multi-leaded device to a substrate for bonding thereto comprising: an apertured plate, the apertures of said plate corresponding in number and position to the leads of said device; a pin slidably mounted in each said aperture for transmitting a clamping force to retain one of said leads; spring means engaging each said pin and said plate and tending to force each said pin in a direction axially along the associated aperture to provide said clamping force; and means associated with each said pin for retaining said pin in said aperture.
Claim 3
Independent Claim
92 words
A device for compliant bonding at least two first workpieces to widely spaced bonding sites on a second workpiece, said device comprising: a compliant medium associated with each bonding site for engaging said workpieces, and means for simultaneously applying bonding pressure to said compliant medium at aLl of the bonding sites with the pressure applied at each individual bonding site being independent of the pressure applied at each other bonding site so as to compensate for workpiece irregularities between said bonding sites while compliantly bonding each first workpiece to said second workpiece.
Claim 4
Independent Claim
92 words
A device for compliant bonding at least two first workpieces to widely spaced bonding sites on a second workpiece, said device comprising: a compliant medium associated with each bonding site for engaging said workpieces, and means for simultaneously applying bonding pressure to said compliant medium at aLl of the bonding sites with the pressure applied at each individual bonding site being independent of the pressure applied at each other bonding site so as to compensate for workpiece irregularities between said bonding sites while compliantly bonding each first workpiece to said second workpiece.
Claim 5
Dependent Claim
12 words
The device of claim 2 wherein the first workpieces are beam-lead devices.
Claim 6
Dependent Claim
24 words
The device of claim 3 wherein the means for independently applying bonding pressure to each bonding site is a plurality of individually displaceable pins.
Claim 7
Dependent Claim
12 words
The device of claim 2 wherein the first workpieces are discrete leads.
Claim 8
Dependent Claim
24 words
The device of claim 5 wherein the means for independently applying bonding pressure to each bonding site is a plurality of individually displaceable pins.
Claim 9
Independent Claim
96 words
A device for compliantly bonding at least two first workpieces to widely spaced bonding sites on a second workpiece, said device comprising: a compliant medium associated with each bonding site for engaging each first workpiece; a plurality of individually mounted pins, each pin being associated with a bonding site on said second workpiece; and means for applying sufficient energy independently through each of said individually mounted pins and said compliant medium to each respective associated bonding site to compliantly bond each first workpiece to said second workpiece while compensating for workpiece irregularities between said bonding sites.
Claim 10
Independent Claim
96 words
A device for compliantly bonding at least two first workpieces to widely spaced bonding sites on a second workpiece, said device comprising: a compliant medium associated with each bonding site for engaging each first workpiece; a plurality of individually mounted pins, each pin being associated with a bonding site on said second workpiece; and means for applying sufficient energy independently through each of said individually mounted pins and said compliant medium to each respective associated bonding site to compliantly bond each first workpiece to said second workpiece while compensating for workpiece irregularities between said bonding sites.
Claim 11
Dependent Claim
26 words
The device of claim 7 wherein each pin is spring biased to permit individual displacement of each pin to compensate for workpiece irregularities between bonding sites.
Claim 12
Dependent Claim
14 words
The device of claim 8 wherein a compliant medium is secured to each pin.
Claim 13
Dependent Claim
21 words
The jig of claim 1, further comprising: a compliant medium engaging the extremity of each pin furthest along said axial direction.
Claim 14
Dependent Claim
14 words
The jig of claim 10 wherein the compliant medium is secured to each pin.
Claim 15
Dependent Claim
25 words
The jig of claim 10 wherein each of a plurality of independent members composed of the compliant medium engages an extremity of a different pin.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |