Patent US5038101A successfully refreshed from Google Patents.
US5038101A
Expired / Lapsed
US
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Carriers for electrical components in transistor outline packages
Assignee: R H MURPHY Co Inc A Corp OF NH
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Filing: 1990-03-15
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Granted: 1991-08-06
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Expires: 2010-03-15
Abstract
Abstract Carriers for electronic components in transistor outline packages with terminals arranged in circular or rectangular arrays. The carrier has a conductive frame including a planar portion, side rails and a housing section disposed along an axis transverse to the planar section. The housing contains an insert of insulating material with apertures disposed in an array corresponding to the terminal array thereby to grip at least some of the terminals and electrically isolate those terminals from each other. The insert has a length along the transverse axis that is at least coextensive with the terminals thus to isolate the terminals completely. A portion of the insert extends along the planar surface and the insert is open to receive the terminal test leads or other mechanisms for testing the component. Specific embodiments for TO packages with a different terminal arrays are disclosed.
Inventors
- 👤 Robert H. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:33
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; G01R1/04; G01R1/0408; G01R1/0433
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A carrier for electronic components housed in a transistor outline package with a predetermined array of terminals of a given size, said carrier comprising: A. a conductive frame having a planar transverse support at a predetermined location thereon and centered on a transverse axis through said conductive frame, and B. a resilient insulating insert extending along the transverse axis and integral with said planar transverse support for supporting the transistor outline package, said insert having a plurality of apertures therethrough in register with the terminal array, the size of certain said apertures corresponding to the size of the terminals whereby an interference fit exists between the terminals and the material adjacent the apertures, and said insert having a plurality of open segment means for partially surrounding individual terminals thereby to isolate electrically the terminals from each other and from said conductive frame, said carrier thereby simultaneously minimizing electrostatic charges while simultaneously insulating the terminals from each other.
Claim 2
Dependent Claim
157 words
A carrier for electronic components housed in a transistor outline package with a predetermined array of terminals of a given size, said carrier comprising: A. a conductive frame having a planar transverse support at a predetermined location thereon and centered on a transverse axis through said conductive frame, and B. a resilient insulating insert extending along the transverse axis and integral with said planar transverse support for supporting the transistor outline package, said insert having a plurality of apertures therethrough in register with the terminal array, the size of certain said apertures corresponding to the size of the terminals whereby an interference fit exists between the terminals and the material adjacent the apertures, and said insert having a plurality of open segment means for partially surrounding individual terminals thereby to isolate electrically the terminals from each other and from said conductive frame, said carrier thereby simultaneously minimizing electrostatic charges while simultaneously insulating the terminals from each other.
Claim 3
Dependent Claim
44 words
A carrier system as recited in claim 1 wherein said conductive frame is composed of a high temperature rigid conductive material comprising a moldable material taken from the group consisting of polyether sulfones, polyether imides, polyaeryl sulfones and polyesters filled with a conductive filler.
Claim 4
Dependent Claim
29 words
A carrier system as recited in claim 2 wherein said conductive frame is composed of polyether sulfone having a filler taken from the group consisting of carbon and aluminum.
Claim 5
Dependent Claim
143 words
A carrier system as recited in claim 2 wherein the terminal array defines a square of a predetermined size, said insert comprising a hollow body portion aligned along the transverse axis and a top portion having a plurality of apertures therethrough corresponding to the array of the terminals for supporting the package, said body portion depending below said conductive frame means with a plurality of grooves extending parallel to the transverse axis formed in the sides thereof for defining said open segment means, said body portion having a length along the axis at least coextensive with the terminals, said conductive frame means additionally having a plurality of depending legs engaging corners of said body portion and a hollow housing portion spaced from said leg portions and coextensive with at least a portion of the length thereof for internally supporting said insert body portion.
Claim 6
Dependent Claim
33 words
A carrier system as recited in claim 4 wherein said insert is composed of a high-temperature moldable insulating material taken from the group consisting of polyether sulfones, polyether imides, polyaeryl sulfones and polyesters.
Claim 7
Dependent Claim
16 words
A carrier system as recited in claim 5 wherein said insert is composed of polyether sulfone.
Claim 8
Dependent Claim
123 words
A carrier system as recited in claim 2 wherein the terminal array of the transistor package is a circle, said insert comprising a cylindrical central core means coaxial with the transverse axis for supporting the package and said open segment means comprising a plurality of fins equal to the number of terminals radiating from said transverse axis and said central core thereby defining a plurality of open segments, cylindrical shell means surrounding said terminations of said fins over a portion of the axial length of said insert, and web means for interconnecting said fins, said central core means and said shell means, said web means having a plurality of apertures therethrough parallel to the transverse axis and intermediate adjacent ones of said fins.
Claim 9
Dependent Claim
34 words
A carrier system as recited in claim 7 wherein said insert is composed of a high temperature moldable insulating material taken from the group consisting of polyether sulfones, polyether imides, polyaeryl sulfones and polyesters.
Claim 10
Dependent Claim
16 words
A carrier system as recited in claim 8 wherein said insert is composed of polyether sulfone.
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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |