Patent US5557288A successfully refreshed from Google Patents.
US5557288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna housing with extendable drawer for a portable computer
Assignee: Lenovo Singapore Pte Ltd
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Filing: 1995-09-07
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Granted: 1996-09-17
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Expires: 2015-09-07
Abstract
Abstract A drawer (70) and antenna (e.g., 78) can be extended from a computer for wireless communications, and retracted when not in use. The antenna and its circuit board (56) are slidably attached to the drawer, which is slidably attached to an antenna housing (30) located within the computer. A door (74) is pivotally attached to a bottom plate (60) of the drawer to cover a slot (40) in the side of the computer. For wireless communications, the antenna, circuit board and drawer are extended through the slot and project out the side of the computer. The bottom plate, door and a cover over the circuit board function as a ground plane for the antenna. The effective dimensions of the ground plane can be varied by sliding the circuit board relative to the drawer.
Inventors
- 👤 Naotaka Kato
- 👤 Katsutoshi Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:42
CPC Classifications
G; G06; G06F; G06F1/00; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/2258; G06F1/16; G06F1/1613; G06F1/1615; G06F1/1616; G06F1/1633; G06F1/1656; G06F1/1684; G06F1/1698
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A computer having a wireless communication system, said computer comprising in combination: a computer housing having an opening; a drawer slidably attached to said computer housing, said drawer having an extended position projecting outwardly from said computer housing, and having a retracted position within said housing, said drawer passing through said opening in said housing when said drawer is moved from said retracted to said extended position; and an antenna attached to said drawer, said antenna being positioned exterior to said computer housing when said drawer is in said extended position, and said antenna being positioned within said computer housing when said drawer is in said retracted position, said antenna being positionable in an operating position when said drawer is in said extended position.
Claim 2
Dependent Claim
124 words
A computer having a wireless communication system, said computer comprising in combination: a computer housing having an opening; a drawer slidably attached to said computer housing, said drawer having an extended position projecting outwardly from said computer housing, and having a retracted position within said housing, said drawer passing through said opening in said housing when said drawer is moved from said retracted to said extended position; and an antenna attached to said drawer, said antenna being positioned exterior to said computer housing when said drawer is in said extended position, and said antenna being positioned within said computer housing when said drawer is in said retracted position, said antenna being positionable in an operating position when said drawer is in said extended position.
Claim 3
Dependent Claim
147 words
A computer having a wireless communication system, said computer comprising in combination: a computer housing having an opening; a drawer slidably attached to said computer housing, said drawer having an extended position projecting outwardly from said computer housing, and having a retracted position within said housing, said drawer passing through said opening in said housing when said drawer is moved from said retracted to said extended position, said drawer having a conductive ground plane surface; a circuit board slidably attached to said drawer; and an antenna attached to said circuit board, said antenna being positioned exterior to said computer housing when said drawer is in said extended position, and said antenna being positioned within said computer housing when said drawer is in said retracted position; said antenna being tunable by sliding said circuit board relative to said drawer, thereby varying the effective dimensions of said ground plane.
Claim 4
Dependent Claim
147 words
A computer having a wireless communication system, said computer comprising in combination: a computer housing having an opening; a drawer slidably attached to said computer housing, said drawer having an extended position projecting outwardly from said computer housing, and having a retracted position within said housing, said drawer passing through said opening in said housing when said drawer is moved from said retracted to said extended position, said drawer having a conductive ground plane surface; a circuit board slidably attached to said drawer; and an antenna attached to said circuit board, said antenna being positioned exterior to said computer housing when said drawer is in said extended position, and said antenna being positioned within said computer housing when said drawer is in said retracted position; said antenna being tunable by sliding said circuit board relative to said drawer, thereby varying the effective dimensions of said ground plane.
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) | 1999-09-17 | 2000-03-18 | 2000-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-17 | 2004-03-18 | 2004-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-17 | 2008-03-18 | 2008-09-17 | $7700.00 | Window Closed / Lapsed |