US4084213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable keyboard/display terminal
Assignee: Modern Controls Inc
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Filing: 1977-02-22
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Granted: 1978-04-11
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Expires: 1997-02-22
Abstract
Abstract Apparatus for housing the electronic components, keyboard and display screen for a portable communications terminal wherein the terminal is completely self-contained, and the apparatus may be closed into a case for carrying and opened into a plurality of operable positions, having power and heat dissipation features for safe operation in any of these positions. The heat dissipation system includes air circulation channels for conveying air flow over all internal components from a single source of air.
Inventors
- 👤 Richard K. Kirchner
- 👤 Nicholas Cleanthis Andreadakis
- 👤 William Norman Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:56
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/16; G06F1/20; G06F1/203; G06F1/1613; G06F1/1615; G06F1/1616; G06F1/1633; G06F1/1656
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
165 words
A portable electronic keyboard and display terminal for self-contained housing of a visual display panel and alphanumeric keyboard, comprising: a. a hinged case having a bottom portion and an openable cover, said bottom portion housing said keyboard and said cover housing said display panel; b. a plurality of spaced apart circuit boards beneath said keyboard, said circuit boards having air flow paths therebetween and having a common air flow communication zone adjacent said cover hinge side of said case; c. an air blower adjacent one end of said spaced apart circuit boards; d. at least one spaced apart circuit board inside said cover relative to said visual display panel, forming an air flow channel therebetween; and e. a flexible membrane having one end attached to said cover and another end attached to said bottom portion, said membrane extending along the hinged edge of said case to form an air flow communication path between said common air flow communication zone and said cover air flow channel.
Claim 2
Dependent Claim
165 words
A portable electronic keyboard and display terminal for self-contained housing of a visual display panel and alphanumeric keyboard, comprising: a. a hinged case having a bottom portion and an openable cover, said bottom portion housing said keyboard and said cover housing said display panel; b. a plurality of spaced apart circuit boards beneath said keyboard, said circuit boards having air flow paths therebetween and having a common air flow communication zone adjacent said cover hinge side of said case; c. an air blower adjacent one end of said spaced apart circuit boards; d. at least one spaced apart circuit board inside said cover relative to said visual display panel, forming an air flow channel therebetween; and e. a flexible membrane having one end attached to said cover and another end attached to said bottom portion, said membrane extending along the hinged edge of said case to form an air flow communication path between said common air flow communication zone and said cover air flow channel.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1, further comprising air holes in said bottom portion of said case adjacent said air blower.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2, further comprising air holes in said cover in flow communication with said cover air flow channel.
Claim 5
Dependent Claim
22 words
The apparatus of claim 3, wherein said hinged case includes a piano hinge extending along substantially the entire length of said case.
Claim 6
Dependent Claim
153 words
A keyboard and display terminal for portable connection to telephone line communications systems, comprising: a. a carrying case having a base storage volume and a cover storage volume and wherein said cover is hinged to said base along an edge; b. a plurality of electronic circuit boards mounted in spaced apart attachment in said base storage volume, and including a keyboard as a topmost circuit board, all of said circuit boards spaced away from contact with the base edge having the cover hinge attachment; c. at least one circuit board and a display screen mounted in spaced apart attachment in said cover storage volume, said display screen being spaced away from contact with the cover edge having the base hinge attachment; and d. a flexible membrane extending the length of said cover and base edge hinge and having a side attached to said display screen and an opposite side attached to said keyboard.
Claim 7
Dependent Claim
153 words
A keyboard and display terminal for portable connection to telephone line communications systems, comprising: a. a carrying case having a base storage volume and a cover storage volume and wherein said cover is hinged to said base along an edge; b. a plurality of electronic circuit boards mounted in spaced apart attachment in said base storage volume, and including a keyboard as a topmost circuit board, all of said circuit boards spaced away from contact with the base edge having the cover hinge attachment; c. at least one circuit board and a display screen mounted in spaced apart attachment in said cover storage volume, said display screen being spaced away from contact with the cover edge having the base hinge attachment; and d. a flexible membrane extending the length of said cover and base edge hinge and having a side attached to said display screen and an opposite side attached to said keyboard.
Claim 8
Dependent Claim
31 words
The apparatus of claim 5, further comprising an air blower mounted in said base storage volume adjacent an end of said plurality of electronic circuit boards mounted in spaced apart attachment.
Claim 9
Dependent Claim
21 words
The apparatus of claim 6, further comprising ventilator openings in said base in the air flow coupling with said air blower.
Claim 10
Dependent Claim
23 words
The apparatus of claim 7, further comprising ventilator openings in said cover along edges perpendicular to the cover edge hinged to said base.
Claim 11
Dependent Claim
20 words
The apparatus of claim 8, further comprising ventilator openings in said base at a point opposite said air blower mounting.
Claim 12
Dependent Claim
16 words
The apparatus of claim 9, wherein said cover and base hinge further comprises a piano hinge.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |