Patent US5021922A successfully refreshed from Google Patents.
US5021922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable personal computer
Assignee: Lenovo Singapore Pte Ltd
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Filing: 1989-11-22
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Granted: 1991-06-04
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Expires: 2009-11-22
Abstract
Abstract The computer is adapted to be used and stored on its narrow bottom surface (24), which has an area which is less than the area of the front surface (25) of the computer. A keyboard (4) is pivotally mounted to the back of a cover on the front surface. A floppy disk drive (3) is pivotally mounted behind the cover and the drive can be operated in the open or closed positions. A movable flat display (2) is positioned parallel to the front surface of the computer when the display is in the retracted position. A frictional mechanism (FIG. 5A) permits the display to be positioned at any angle.
Inventors
- 👤 Myron F. Davis
- 👤 Randall W. Martin
- 👤 Hideo Nomura
- 👤 Richard F. Pollitt
- 👤 Ernest Wittner
- 👤 Wataru Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:22
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F1/00; G06F1/16; G06F1/1613; G06F1/1633; G06F1/1656; G06F1/1615; G06F1/1616; G06F1/1662; G06F1/1669; G06F1/1675; G06F1/1681; Y; Y10; Y10S; Y10S248/00; Y10S248/917; Y10S248/919; Y10S248/92
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
A display assembly for a computer, comprising in combination: a display device; a first member having a first pivot point, said first member being pivotally attachable to a frame of a computer at said first pivot point; a second member having a second pivot point, said second member being pivotally attached to said first member a said second pivot point, said second member being attached to said display device; a frictional mechanism attached to said first and second members, said frictional mechanism including: a cam surface provided on said second member; a shoe movably attached to said first member; and a first spring having one end fixed to said first member and the other end engaged on said shoe, such that said shoe is frictionally engaged with said cam surface.
Claim 2
Dependent Claim
130 words
A display assembly for a computer, comprising in combination: a display device; a first member having a first pivot point, said first member being pivotally attachable to a frame of a computer at said first pivot point; a second member having a second pivot point, said second member being pivotally attached to said first member a said second pivot point, said second member being attached to said display device; a frictional mechanism attached to said first and second members, said frictional mechanism including: a cam surface provided on said second member; a shoe movably attached to said first member; and a first spring having one end fixed to said first member and the other end engaged on said shoe, such that said shoe is frictionally engaged with said cam surface.
Claim 3
Dependent Claim
29 words
The display assembly of claim 1, further comprising a second spring attached to said first member, such that said first member is biased to move in a first direction.
Claim 4
Dependent Claim
166 words
A computer, comprising in combination: a case enclosing a computer, said computer including a supporting frame, a keyboard and a disk drive; a display device movable between a retracted position and a pulled-out position; a first member having a first pivot point, said first member being pivotally attached to said frame at said first pivot point; a second member having a second pivot point, said second member being pivotally attached to said first member at said second pivot point, said second member being attached to said display device; and a frictional mechanism attached to said first and second members such that said display device can be positioned at variable angles with respect to said case, said frictional mechanism including: a cam surface provided on said second member; a shoe movably attached to said first member; and a first spring having one end fixed to said first member and the other end engaged on said shoe, such that said shoe is frictionally engaged with said cam surface.
Claim 5
Dependent Claim
166 words
A computer, comprising in combination: a case enclosing a computer, said computer including a supporting frame, a keyboard and a disk drive; a display device movable between a retracted position and a pulled-out position; a first member having a first pivot point, said first member being pivotally attached to said frame at said first pivot point; a second member having a second pivot point, said second member being pivotally attached to said first member at said second pivot point, said second member being attached to said display device; and a frictional mechanism attached to said first and second members such that said display device can be positioned at variable angles with respect to said case, said frictional mechanism including: a cam surface provided on said second member; a shoe movably attached to said first member; and a first spring having one end fixed to said first member and the other end engaged on said shoe, such that said shoe is frictionally engaged with said cam surface.
Claim 6
Dependent Claim
39 words
The computer of claim 3, further comprising a second spring having one end attached to said first member, and the other end attached to said frame, such that said first member is biased to move in a first direction.
Claim 7
Dependent Claim
17 words
The computer of claim 4, further comprising means for latching said display device in a retracted position.
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |