Patent US3700155A successfully refreshed from Google Patents.
US3700155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for improving alignment of beam leaded bonding tools
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 bonding tool and method permitting improved accurate relative alignment of a bonding tool, a beam leaded device and a substrate onto which electrical leads from the beam leaded device are to be welded or bonded. Particular use is made of a unique reference area or point provided on the tool itself to aid in the alignment processes and in the preferred embodiment, a mirror surface is utilized to support the beam leaded device during alignment of this device with a reference point on the tool thus further facilitating detection of minor relative misalignments which can then be corrected by an operator.
Inventors
- 👤 Leonard S Hermanns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:56
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0446; B; B23; B23K; B23K20/00; B23K20/02; B23K20/023; B23K20/025; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53087; Y10T29/5313; Y10T29/532; Y10T29/53209
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
An improvement for a bonding tool used in bonding electrical leads from a beam leaded device onto mating conductive surfaces on a substrate, wherein said tool includes a main body portion having a longitudinal axis and an end surface substantially transverse thereto, a recessed holding area within said end surface for receiving and holding at least part of said beam leaded device, a bonding surface disposed near the periphery of said holding area for bonding said leads to said mating conductive surfaces on said substrate, a base member having a surface for positioning of said beam leaded device and said substrate substantially transverse to said longitudinal axis of said bonding tool and means for attaching said base member and positioning surface substantially under the end portion of said bonding tool, wherein said improvement comprises: at least one easily distinguishable reference mark on the bonding tool disposed near the periphery of said bonding surface for aid in visually aligning said bonding surface of said bonding tool with respect to said electrical leads and also with respect to said mating conductive surfaces on said substrate wherein said surface of said base member for positioning of said beam leaded device and said substrate is a mirror surface for further facilitating the visual alignment of said electrical leads, mating conductive surfaces and substrate.
Claim 2
Dependent Claim
219 words
An improvement for a bonding tool used in bonding electrical leads from a beam leaded device onto mating conductive surfaces on a substrate, wherein said tool includes a main body portion having a longitudinal axis and an end surface substantially transverse thereto, a recessed holding area within said end surface for receiving and holding at least part of said beam leaded device, a bonding surface disposed near the periphery of said holding area for bonding said leads to said mating conductive surfaces on said substrate, a base member having a surface for positioning of said beam leaded device and said substrate substantially transverse to said longitudinal axis of said bonding tool and means for attaching said base member and positioning surface substantially under the end portion of said bonding tool, wherein said improvement comprises: at least one easily distinguishable reference mark on the bonding tool disposed near the periphery of said bonding surface for aid in visually aligning said bonding surface of said bonding tool with respect to said electrical leads and also with respect to said mating conductive surfaces on said substrate wherein said surface of said base member for positioning of said beam leaded device and said substrate is a mirror surface for further facilitating the visual alignment of said electrical leads, mating conductive surfaces and substrate.
Claim 3
Dependent Claim
36 words
An improvement for a bonding tool as in claim 1 wherein said bonding surface is substantially rectangularly shaped and wherein said reference mark comprises a notch located substantially midway along one side of said bonding surface.
Claim 4
Dependent Claim
36 words
An improvement for a bonding tool as in claim 2 wherein said bonding surface is substantially rectangularly shaped and wherein said reference point comprises a notch in at least two adjacent corners of said bonding surface.
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 |