Patent US4623247A successfully refreshed from Google Patents.
US4623247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document scanners
Assignee: British Library
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Filing: 1984-12-17
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Granted: 1986-11-18
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Expires: 2004-12-17
Abstract
Abstract A document scanner includes a wedge-shaped scanner housing (16, 18), vertically movable on a main housing (10) to locate an inclined scanned window against a document resting on a trough-like document support (14) beneath the scanner housing. The scanner housing is manually movable up and down for location against and removal from a document to be copied, and counterbalancing means are provided within the main housing to facilitate such vertical housing movement.
Inventors
- 👤 Hugh Wilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:58
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/60; G03G15/605; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03B27/62; G03B27/6207; G03B27/6221; H; H04; H04N; H04N1/00; H04N1/04; H04N1/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
212 words
In a document scanner which has a housing having a window through which a document can be illuminated and scanned to produce a photocopy of the document, the improvement comprising: said housing having a wedge-shaped section having at least two faces and a window being provided in at least one face of said wedge-shaped section; a V-shaped trough being disposed vertically below said wedge shaped section of the housing and having two opposing sides to form a book support in which a book will rest, the angle formed by said sides at least generally corresponding to the included angle of the wedge-shaped section of the housing; and positioning means comprising: guide means for constraining the wedge-shaped section to movement generally in vertical direction; manually operable means for vertically moving the wedge-shaped section relative to the V-shaped trough, along the guide means and between at least a raised position, in which the wedge-shaped section is spaced apart from the V-shaped trough, and a lowered position, in which the window of the wedge-shaped section is brought closely adjacent an open book resting in said V-shaped trough; and counterbalance means to compensate for the weight of said housing to facilitate said manual vertical movement of the housing's wedge-shaped section relative to the said book support.
Claim 2
Dependent Claim
212 words
In a document scanner which has a housing having a window through which a document can be illuminated and scanned to produce a photocopy of the document, the improvement comprising: said housing having a wedge-shaped section having at least two faces and a window being provided in at least one face of said wedge-shaped section; a V-shaped trough being disposed vertically below said wedge shaped section of the housing and having two opposing sides to form a book support in which a book will rest, the angle formed by said sides at least generally corresponding to the included angle of the wedge-shaped section of the housing; and positioning means comprising: guide means for constraining the wedge-shaped section to movement generally in vertical direction; manually operable means for vertically moving the wedge-shaped section relative to the V-shaped trough, along the guide means and between at least a raised position, in which the wedge-shaped section is spaced apart from the V-shaped trough, and a lowered position, in which the window of the wedge-shaped section is brought closely adjacent an open book resting in said V-shaped trough; and counterbalance means to compensate for the weight of said housing to facilitate said manual vertical movement of the housing's wedge-shaped section relative to the said book support.
Claim 3
Dependent Claim
17 words
A document scanner according to claim 1, and further comprising a vertical main section of the housing.
Claim 4
Dependent Claim
23 words
A document scanner according to claim 2 wherein said guide means comprises guides vertically disposed in said vertical main section of the housing.
Claim 5
Dependent Claim
21 words
A document scanner according to claim 2, wherein said counterbalance means is disposed in said vertical main section of the housing.
Claim 6
Dependent Claim
29 words
A document scanner according to claim 1, wherein braking of said wedge-shaped section in said raised position is enabled by friction between said wedge-shaped section and said guide means.
Claim 7
Dependent Claim
37 words
A document scanner according to claim 1, and further comprising a braking means for holding the wedge-shaped section in said rasied position wherein said braking means is operable by a control incorporated in said manually operable means.
Claim 8
Dependent Claim
25 words
A document scanner according to claim 1, including a vertical main housing having guides for up and down movement of the wedge shaped section thereon.
Claim 9
Dependent Claim
17 words
A document scanner according to claim 7, wherein the counterbalance means is accomodated in the main housing.
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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |