§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3790429A Expired / Lapsed US ⏱️ 0.0 years remaining

Articulated, unit cast case system for ungluing documents

Assignee: Individual
•
Filing: 1971-06-09
•
Granted: 1974-02-05
•
Expires: 1991-06-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract This invention relates to apparatus which will allow documents of small dimensions to be unglued from their bindings without damage. The apparatus includes a unit-cast case actually including two boxes connected by a hinge forming an integral part of the case, with the boxes mentioned differing only by their depth, and with the top one functioning as a cover. To the respective bottom of each box are attached thin plates of asbestos covered with a plasticized grill. The system operates by dampening the asbestos plate of the lower box with distilled water. The document to be unglued is placed directly upon the grill. Impregnation time before ungluing varies from several minutes to several hours. The invention can be used in the laboratory; in the medical and pharmaceutical fields; in industry; by stamp collectors; and the like.

Inventors

  • 👤 R Berger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 06:35
CPC Classifications
B; B43; B43M; B43M99/00; B43M7/00; B43M7/004; Y; Y10; Y10T; Y10T156/00; Y10T156/11; Y10T156/1111; Y10T156/19; Y10T156/1928

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 85 words
An articulated unit cast case system for ungluing documents, comprising, a case, a cover, a flexible piano hinge integrally connecting said case and cover together along an edge thereof as a single molding so that when said cover is placed over said case an enclosure is formed therein, first asbestos plate means attached to the inner surface of the bottom of said case, and second asbestos plate means attached to the inner surface of said cover for facilitating the presence of moisture within the enclosure.
Claim 2
Dependent Claim 85 words
An articulated unit cast case system for ungluing documents, comprising, a case, a cover, a flexible piano hinge integrally connecting said case and cover together along an edge thereof as a single molding so that when said cover is placed over said case an enclosure is formed therein, first asbestos plate means attached to the inner surface of the bottom of said case, and second asbestos plate means attached to the inner surface of said cover for facilitating the presence of moisture within the enclosure.
Claim 3
Dependent Claim 53 words
An articulated unit cast case system for ungluing documents as recited in claim 1, wherein said first and second asbestos plate means for said case and cover, respectively, comprise an evaporation plate for containing moisture which emanates in the enclosure and an absorption plate for absorbing the moisture emanating in the enclosure, respectively.
Claim 4
Dependent Claim 36 words
An articulated unit cast case system for ungluing documents as recited in claim 2, and additionally a plasticized grill with mesh of a woven wire for enclosing said plates to contain and support said plates therein.
Claim 5
Dependent Claim 73 words
An articulated unit cast case system for ungluing documents as recited in claim 2, wherein closure of said case and cover is obtained by means of a flexible piano hinge of said cover fitting into a corresponding slot in said case, with the closing and opening thereof being facilitated by platelets belonging respectively to said case and to said cover on which hinges can find support for separating said closure case and cover.

References Cited (Backward Citations)

US895874A Cited
US2173046A Cited
US2322350A Cited
US3155269A Cited
US3554847A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-04 1977-08-06 1978-02-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-04 1981-08-06 1982-02-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-04 1985-08-06 1986-02-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag