Patent US1606143A successfully refreshed from Google Patents.
US4031644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Page-turners
Assignee: Possum Controls Ltd
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Filing: 1976-04-12
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Granted: 1977-06-28
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Expires: 1996-04-12
Abstract
Abstract Apparatus enabling the pages of a book to be turned by remote control comprises a book-support with a reversible electric motor on it. An output shaft of the motor extends across the book and the motor is pivotally mounted for swinging the shaft both across and perpendicular to the book through limited angles. A friction wheel is on the shaft for rolling across the pages of the book and a radial finger adjacent the friction wheel is coupled to the shaft through a slipping clutch.
Inventors
- 👤 Peter Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:18
CPC Classifications
B; B42; B42D; B42D9/00; B42D9/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
Apparatus whereby the pages of a book can be turned by remote control, comprising a mounting board for supporting a book and having a reversible electric motor mounted thereon, the motor having an output shaft extending therefrom over and generally parallel to the mounting board and being pivotally mounted for swinging movement of the output shaft through limited angles across and perpendicular to the mounting board, the output shaft having affixed thereto a friction-wheel for rolling across the pages of a book resting on the mounting board when the wheel is driven by the motor to thereby turn said pages, and a radial finger adjacent the wheel and coupled to the shaft through a slipping clutch whereby when the shaft reaches a limit of swing across a book the wheel can continue its rotation with the finger held against rotation by engagement with the mounting board.
Claim 2
Dependent Claim
146 words
Apparatus whereby the pages of a book can be turned by remote control, comprising a mounting board for supporting a book and having a reversible electric motor mounted thereon, the motor having an output shaft extending therefrom over and generally parallel to the mounting board and being pivotally mounted for swinging movement of the output shaft through limited angles across and perpendicular to the mounting board, the output shaft having affixed thereto a friction-wheel for rolling across the pages of a book resting on the mounting board when the wheel is driven by the motor to thereby turn said pages, and a radial finger adjacent the wheel and coupled to the shaft through a slipping clutch whereby when the shaft reaches a limit of swing across a book the wheel can continue its rotation with the finger held against rotation by engagement with the mounting board.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1, and wherein the said radial finger is in the form of a loop of wire.
Claim 4
Dependent Claim
34 words
Apparatus according to claim 1 wherein the said slipping clutch comprises a spring washer frictionally engaging the finger and a threaded nut whereby the force between the washer and the finger can be adjusted.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 1, wherein the mounting board has a curved member upstanding therefrom which is engaged by the shaft when traversing a central region of a book whereby the said friction-wheel is lifted from the book.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |