US4087179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book holder for microfilming
Assignee: Individual
•
Filing: 1976-11-19
•
Granted: 1978-05-02
•
Expires: 1996-11-19
Abstract
Abstract A holding device for books being filmed by microfilm cameras comprising a generally rectangular-shaped, box-like structure having a bottom, front, back and side walls, a transparent cover which can be raised for loading books therein, and means within the holding device for lifting the book up against the transparent cover during filming.
Inventors
- 👤 Lawrence J. Conkerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6214
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A holding device for books being filmed by microfilm cameras which comprises a generally rectangular-shaped, box-like structure, having a bottom, four wals and an upper-hinged, transparent cover, having mounted internally therein at least two book-lifting means in a side by side relation which operate to maintain pressure, against a book resting thereon, in the direction of the upper-hinged, transparent cover, each book-lifting means being independently operable, and wherein the book-lifting means are guided in an up and down relation to the device by means of vertical guides attached to the inner surface of at least the front and rear walls of the book holding device and wherein the vertical guides are received in matching indentations located in the book-lifting means.
Claim 2
Dependent Claim
120 words
A holding device for books being filmed by microfilm cameras which comprises a generally rectangular-shaped, box-like structure, having a bottom, four wals and an upper-hinged, transparent cover, having mounted internally therein at least two book-lifting means in a side by side relation which operate to maintain pressure, against a book resting thereon, in the direction of the upper-hinged, transparent cover, each book-lifting means being independently operable, and wherein the book-lifting means are guided in an up and down relation to the device by means of vertical guides attached to the inner surface of at least the front and rear walls of the book holding device and wherein the vertical guides are received in matching indentations located in the book-lifting means.
Claim 3
Dependent Claim
31 words
The book holding device of claim 1, wherein the front wall of the device has openings through which an operator may turn pages of a book resting upon the book-lifting means.
Claim 4
Dependent Claim
24 words
The book holding device of claim 1, wherein the transparent cover is hinged on the upper edge of the rear wall of said device.
Claim 5
Dependent Claim
15 words
The book holding device of claim 1, wherein the box-like structure is made from wood.
Claim 6
Dependent Claim
15 words
The book holding device of claim 1, wherein the box-like structure is made from plastic.
Claim 7
Dependent Claim
13 words
The book holding device of claim 1, wherein the transparent cover is glass.
Claim 8
Dependent Claim
22 words
The book holding device of claim, wherein the two book-lifting means have affixed to and positioned beneath each such platform a spring.
References Cited (Backward Citations)
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US1148127A
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GB588158A
Cited
GB676972A
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GB912100A
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US3494696A
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US3625610A
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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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |