Patent US4050754A successfully refreshed from Google Patents.
US4050754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book ejection apparatus
Assignee: Individual
•
Filing: 1975-09-12
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Granted: 1977-09-27
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Expires: 1995-09-12
Abstract
Abstract A device for use in a conventional book case to eject a book upon demand.
Inventors
- 👤 Charles L. Coley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:08
CPC Classifications
A; A47; A47B; A47B63/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A book ejection system for use in a bookcase having a front and back and having at least one horizontal shelf, and two vertical sides comprising compression resistant means having reactive characteristics mounted to the back of said bookcase substantially orthogonal to said horizontal shelf, whereby when books are positioned in a first position on said horizontal shelf against said compression means and a book is moved with a force against said compression means and released, said book will be moved foward in a direction away from said compression means to a position forward from said first position.
Claim 2
Dependent Claim
98 words
A book ejection system for use in a bookcase having a front and back and having at least one horizontal shelf, and two vertical sides comprising compression resistant means having reactive characteristics mounted to the back of said bookcase substantially orthogonal to said horizontal shelf, whereby when books are positioned in a first position on said horizontal shelf against said compression means and a book is moved with a force against said compression means and released, said book will be moved foward in a direction away from said compression means to a position forward from said first position.
Claim 3
Dependent Claim
35 words
The system of claim 1, where said compression resistance means is comprised of a cellular elastomeric material covered with a thin flexible first material connected to a second material by a porous flexible third material.
Claim 4
Dependent Claim
12 words
The system of claim 2, where said cellular material is foam rubber.
Claim 5
Dependent Claim
13 words
The system of claim 3, where said third material is a muslin cloth.
Claim 6
Dependent Claim
49 words
The system of claim 1, wherein said compression resistant means is comprised of a rectangular shaped front panel maintained in a spaced relationship with respect to a rectangular shaped back panel by a spring means and at least one bingee mounted between and connected to each of said panels.
Claim 7
Dependent Claim
29 words
The system of claim 5, wherein said spring means is a multiplicity of spring taken from the group consisting of compression springs, leaf springs, belleville springs, and volute springs.
Claim 8
Dependent Claim
13 words
The system of claim 5, wherein said spring means is a torsion bar.
Claim 9
Dependent Claim
142 words
A book ejection system for use in a book case having at least one horizontal shelf, two vertical sides and at least one vertical back plate comprising a rectangular shaped back panel mounted on said vertical back plate substantially parallel thereto, compression resistant means having reactive characteristics mounted on said rectangular shaped back panel and a rectangular shaped front panel mounted on said compression resistant means substantially parallel to said back panel and maintained in a spaced relationship with respect to said back panel by at least one flexible bingee whereby when books positioned on said horizontal shelf susstantially against said front panel are pushed toward said vertical back panel and released, said book will be moved in a direction away from said back panel to a position spaced from said front panel by the reactive force of said compression resistance means.
Claim 10
Dependent Claim
142 words
A book ejection system for use in a book case having at least one horizontal shelf, two vertical sides and at least one vertical back plate comprising a rectangular shaped back panel mounted on said vertical back plate substantially parallel thereto, compression resistant means having reactive characteristics mounted on said rectangular shaped back panel and a rectangular shaped front panel mounted on said compression resistant means substantially parallel to said back panel and maintained in a spaced relationship with respect to said back panel by at least one flexible bingee whereby when books positioned on said horizontal shelf susstantially against said front panel are pushed toward said vertical back panel and released, said book will be moved in a direction away from said back panel to a position spaced from said front panel by the reactive force of said compression resistance means.
Claim 11
Dependent Claim
43 words
The system of claim 8, wherein said front panel is a rigid panel and said compression means is a multiplicity of spring means taken from the group consisting of compression springs, leaf springs, belleville springs, volute springs, torsion bars and cellular elastomeric materials.
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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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |