Patent US4113373A successfully refreshed from Google Patents.
Patent US4958889A successfully refreshed from Google Patents.
US4958889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-position closure panel
Assignee: Unisys Corp
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Filing: 1989-03-06
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Granted: 1990-09-25
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Expires: 2009-03-06
Abstract
Abstract A portable computer includes a plate mounted to the chassis for pivotal movement between a position covering the connector terminals in the chassis rear wall to a position angularly spaced therefrom wherein the plate extends below the lower surface of the chassis thereby supporting the rear of the chassis in raised relation with respect to the front thereof. Cam surfaces consisting of angularly spaced flats are engageable with cooperating spring-biased followers for retaining the plate in its various angularly spaced positions.
Inventors
- 👤 Dennis J. Boyle
- 👤 Craig F. Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1632
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A portable computer comprising: a chassis having a housing formed of oppositely spaced upper and lower panels having generally rectangularly disposed front, rear and side edges and a peripheral wall extending between and interconnecting said front, rear and side edges of said panels; a plate mounted on said housing for pivotal movement from a position substantially overlying a rear portion of said peripheral wall that extends between said panel rear edges to a position extending said plate below the level of said lower panel for raising the rear of said housing with respect to the front thereof; and means for mounting said plate on said housing including oppositely extending pivot pins in said plate adjacent a longitudinal edge of said plate, journal openings in said peripheral wall rear portion mounting said pins for pivotal movement, position-determining cam means including angularly spaced flats formed on said plate, and follower means mounted on said housing cooperable with said cam means for retaining said plate in selected angularly spaced positions.
Claim 2
Dependent Claim
167 words
A portable computer comprising: a chassis having a housing formed of oppositely spaced upper and lower panels having generally rectangularly disposed front, rear and side edges and a peripheral wall extending between and interconnecting said front, rear and side edges of said panels; a plate mounted on said housing for pivotal movement from a position substantially overlying a rear portion of said peripheral wall that extends between said panel rear edges to a position extending said plate below the level of said lower panel for raising the rear of said housing with respect to the front thereof; and means for mounting said plate on said housing including oppositely extending pivot pins in said plate adjacent a longitudinal edge of said plate, journal openings in said peripheral wall rear portion mounting said pins for pivotal movement, position-determining cam means including angularly spaced flats formed on said plate, and follower means mounted on said housing cooperable with said cam means for retaining said plate in selected angularly spaced positions.
Claim 3
Dependent Claim
49 words
The computer according to claim 1 in which said follower means comprises a plunger body mounted in said housing for extended and retracted movement with respect thereto; a spring engaging between said housing and said body for biasing said body to its extended position in engagement with said flats.
Claim 4
Dependent Claim
34 words
The computer according to claim 2 in which said rear portion of said peripheral wall contains connector terminals 46, 48, 25, 52, 54 and said plate covers said connector terminals in said wall-overlying position.
Claim 5
Dependent Claim
32 words
The computer according to any one of claims 2 or 1 in which said cam and follower means are disposed at opposite ends of said plate adjacent each of said pivot pins.
Claim 6
Dependent Claim
32 words
The computer according to claim 2 in which said flats are disposed on substantially right-angular spacing with respect to each other for determining plate positions of upstanding, horizontal and vertically downturned, respectively.
Claim 7
Dependent Claim
58 words
The computer according to claim 5 including surface portions between said flats, said surface portion between that effective to dispose said plate in its horizontal position and that effective to dispose said plate in its downturned position extending radially outwardly from said pivot pins an amount greater than the radial extend of the other of said surface portions.
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |