US4141075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electronic calculator
Assignee: Texas Instruments Inc
•
Filing: 1977-11-08
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Granted: 1979-02-20
•
Expires: 1997-11-08
Abstract
Abstract Electronic calculators are manufactured by affixing conductors on an insulated substrate, by attaching tape-mounted semiconductor logic and display devices to selected conductors and by interconnecting the conductors with a keyboard. By using the method disclosed, the number of holes provided in the insulated substrate can be reduced or the use of such holes eliminated. Various embodiments of methods of manufacturing calculators are disclosed, along with the structure of such calculators.
Inventors
- 👤 James B. Taylor, Jr.
- 👤 Galen F. Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/702; H05; H05K; H05K1/00; H05K1/18; H05K1/181; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3421; H05K3/3426; H01H2207/00; H01H2229/00; H01H2229/022; H01H2231/00; H01H2231/002; H01H2239/00; H01H2239/01; H05K2201/00; H05K2201/10; H05K2201/10431; H05K2201/10507; H05K2201/10522; H05K2201/10537; H05K2201/10613; H05K2201/10621; H05K2201/10681; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49133
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
54 words
A method of manufacturing an electronic calculator comprising; forming a pattern of conductors on an insulative substrate; forming a keyboard on said substrate; attaching the leads from a tape-mounted semiconductive logic device to selected conductors formed on said substrate; and attaching the leads from tape-mounted display devices to selected conductors formed on said substrate.
Claim 2
Independent Claim
54 words
A method of manufacturing an electronic calculator comprising; forming a pattern of conductors on an insulative substrate; forming a keyboard on said substrate; attaching the leads from a tape-mounted semiconductive logic device to selected conductors formed on said substrate; and attaching the leads from tape-mounted display devices to selected conductors formed on said substrate.
Claim 3
Dependent Claim
31 words
The method according to claim 1, wherein said leads from said logic device and said display devices are attached to selected conductors formed on said substrate using an electrically conductive cement.
Claim 4
Dependent Claim
45 words
The method according to claim 1 wherein the leads from one of said logic device and display devices are attached by electrically conductive cement, and wherein the leads from at least one other of said logic device and said display devices are attached by solder.
Claim 5
Dependent Claim
28 words
The method according to claim 1, wherein said leads from said logic device and said display device are attached to selected conductors formed on said substrate using solder.
Claim 6
Dependent Claim
38 words
The method according to claim 1 wherein said tape-mounted display device comprises a matrix of light emitting diodes, said matrix being electrically connected to a pattern of conductive leads formed on an insulative tape mounting said display device.
Claim 7
Dependent Claim
46 words
The method according to claim 1, wherein said keyboard is formed by forming key switch contacts on said substrate and by attaching lead framed switches to selected conductors formed on said substrate, and disposing the discs of said lead framed switches over said key switch contacts.
Claim 8
Dependent Claim
14 words
The method according to claim 1, wherein said substrate has no holes formed therein.
Claim 9
Independent Claim
87 words
A method of manufacturing an electronic calculator comprising: forming a pattern of conductors on an insulative substrate; forming a plurality of holes along a margin of said substrate, at least two of said holes intersecting selected conductors formed on said substrate; interconnecting at least two of said holes with conductors emanating from a keyboard; attaching leads from a tape-mounted semiconductive logic device to selected conductors formed on said substrate; and attaching the leads from at least one tape-mounted display device to selected conductors formed on said substrate.
Claim 10
Independent Claim
87 words
A method of manufacturing an electronic calculator comprising: forming a pattern of conductors on an insulative substrate; forming a plurality of holes along a margin of said substrate, at least two of said holes intersecting selected conductors formed on said substrate; interconnecting at least two of said holes with conductors emanating from a keyboard; attaching leads from a tape-mounted semiconductive logic device to selected conductors formed on said substrate; and attaching the leads from at least one tape-mounted display device to selected conductors formed on said substrate.
Claim 11
Dependent Claim
31 words
The method according to claim 8, wherein said leads from said logic device and said display device are attached to selected conductors formed on said substrate using an electrically conductive cement.
Claim 12
Dependent Claim
45 words
The method according to claim 8, wherein said leads from one of said logic device and display device are attached by electrically conductive cement, and wherein the leads from at least one other of said logic device and said display device are attached by solder.
Claim 13
Dependent Claim
28 words
The method according to claim 8, wherein said leads from said logic device and said display device are attached to selected conductors formed on said substrate using solder.
Claim 14
Dependent Claim
38 words
The method according to claim 11, wherein said tape-mounted displayed device comprises a matrix of light emitting diodes, said matrix being electrically connected to a pattern of conductive leads formed on an insulative tape mounting said display device.
Claim 15
Dependent Claim
67 words
An electronic calculator comprising a keyboard having conductive means for effecting electrical connections thereto, a substrate having an insulative surface and a plurality of electrical conductors affixed to said surface, a tape-mounted logic element attached to selected ones of said conductors, at least one display device electrically connected to selected ones of said conductors, and means for connecting said conductive means and selected ones of said conductors.
Claim 16
Dependent Claim
67 words
An electronic calculator comprising a keyboard having conductive means for effecting electrical connections thereto, a substrate having an insulative surface and a plurality of electrical conductors affixed to said surface, a tape-mounted logic element attached to selected ones of said conductors, at least one display device electrically connected to selected ones of said conductors, and means for connecting said conductive means and selected ones of said conductors.
Claim 17
Dependent Claim
14 words
The electronic calculator according to claim 13, wherein said substrate comprises a plastic sheet.
Claim 18
Dependent Claim
29 words
The electronic calculator according to claim 14, wherein said plastic substrate comprises a sheet of flexible plastic selected from the group consisting of a polyester plastic and polyimide plastic.
Claim 19
Dependent Claim
22 words
The electronic calculator according to claim 13, wherein the said conductive means comprises a plurality of electrical conductors eminating from said keyboard.
Claim 20
Dependent Claim
49 words
The electronic calculator according to claim 16, wherein the said connecting means comprises a plurality of pads affixed to said surface of said substrate which intersect selected conductors affixed to said surface of said substrate and solder for attaching the electrical conductors eminating from said keyboard to said pads.
Claim 21
Dependent Claim
27 words
The electronic calculator according to claim 17, wherein said substrate and said pads affixed thereto are provided with apertures for receiving the conductors eminating from said keyboard.
Claim 22
Dependent Claim
14 words
The electronic calculator according to claim 18, wherein said substrate comprises a plastic sheet.
Claim 23
Independent Claim
59 words
A method of manufacturing electronic calculator comprising the steps of: (a) forming a pattern of conductors on a substrate, (b) forming a keyboard on said substrate, (c) attaching the leads from a tape-mounted semiconductive logic device to selected conductors on said substrate, and (d) coupling the contacts of at least one display device to selected conductors on said substrate.
Claim 24
Independent Claim
59 words
A method of manufacturing electronic calculator comprising the steps of: (a) forming a pattern of conductors on a substrate, (b) forming a keyboard on said substrate, (c) attaching the leads from a tape-mounted semiconductive logic device to selected conductors on said substrate, and (d) coupling the contacts of at least one display device to selected conductors on said substrate.
Claim 25
Dependent Claim
19 words
The method according to claim 20, wherein the leads from said logic device are attached by electrically conductive cement.
Claim 26
Dependent Claim
24 words
The method according to claim 20, wherein the leads from said logic device are attached to selective conductors formed on said substrate using solder.
Claim 27
Dependent Claim
23 words
The method according to claim 20, wherein said substrate comprises a plastic material selected from the group consisting of polyimide and polyester plastics.
Claim 28
Independent Claim
84 words
A method of manufacturing electronic calculator comprising the steps of: (a) forming a pattern of conductors on a substrate, (b) forming a plurality of pads on said substrate, said pads intersecting selected conductors formed on said substrate, (c) interconnecting at least two said pads with conductors eminating from a keyboard, (d) attaching leads from a tape-mounted semiconductive logic device to selected condutors formed on said substrate, and (e) coupling the contacts of at least one display device to selected conductors formed on said substrate.
Claim 29
Independent Claim
84 words
A method of manufacturing electronic calculator comprising the steps of: (a) forming a pattern of conductors on a substrate, (b) forming a plurality of pads on said substrate, said pads intersecting selected conductors formed on said substrate, (c) interconnecting at least two said pads with conductors eminating from a keyboard, (d) attaching leads from a tape-mounted semiconductive logic device to selected condutors formed on said substrate, and (e) coupling the contacts of at least one display device to selected conductors formed on said substrate.
Claim 30
Dependent Claim
27 words
The method according to claim 24, wherein the leads from said logic device are attached to selected conductors formed on said substrate using an electrically conductive cement.
Claim 31
Dependent Claim
24 words
The method according to claim 24, wherein the leads from said logic device are attached to selected conductors formed on said substrate by solder.
Claim 32
Dependent Claim
23 words
The method according to claim 26, wherein said conductors eminating from said keyboard are interconnected with said at least two pads using solder.
Claim 33
Dependent Claim
41 words
The method according to claim 27 further including the steps of: (a) forming apertures in said substrate, said apertures being formed in way of said at least two pads, and (b) inserting the conductors eminating from said keyboard into said apertures.
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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) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |