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US3824726A Expired / Lapsed US ⏱️ 0.0 years remaining

Changeable multiple image display apparatus

Assignee: MININNESOTA MINING AND MANUFACTURING Co
•
Filing: 1972-10-04
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Granted: 1974-07-23
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Expires: 1992-10-04
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Abstract

Abstract An improved removable display film carrier for changeable copyboards including a carrier panel frame with a display surface, means for removably mounting the frame onto changeable copyboards, a flexible display film bearing an image on at least one face, and a plurality of elastomeric tensioning members, each tensioning member having one end attachable to a panel frame corner, another end attachable to the flexible film corner, and a stretchable middle portion, the flexible display film being held under constant tension on the carrier frame, centered on and slightly spaced from the inside display surface. The display film can be readily changed and replaced as desired to correlate with a worded message. A three-in-one display including a supporting structure, a light diffusion plate having a background image mounted rearwardly in the supporting structure, a changeable display film mounted in a carrier frame and in front of the diffusion plate, the display film bearing an image which is compatible for display purposes when viewing the diffusion plate image overlaid by the display film image, elastomeric tensioning members for mounting the display film in constant tension suspension within the carrier frame, and a changeable copyboard mounted to the front side of the carrier frame. The three-in-one display can accommodate a smaller display film carrier panel removably mounted on the changeable copyboard to provide a fourin-one display.

Inventors

  • 👤 W Schubert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 17:43
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/0418; G09F13/045

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 226 words
A changeable, multiple display comprising: a framework supporting structure for holding said multiple displays; a light source mounted on said framework supporting structure; an image bearing panel display member including means for diffusing light from said light source; panel mounting means for mounting said panel display member immediately adjacent said light source; a carrier frame having a transparent display face bounded by a border rim; hinge means for hingedly mounting said carrier frame to said framework immediately adjacent said image bearing panel display member on the side opposite from said light source; an image bearing thin film display member; and a plurality of constant tension fastening means for readily detachably mounting said thin film display member in constant tension suspension between said border rim and viewable through said display face, said plurality of fastening means each including, an elongated fastening member having an elastomeric middle portion, a tail knob at one end of said middle portion, and a head portion at the other end; each of said fastening members engageable in fastening position between said thin film display member and said carrier frame, with said head portion disposable on one side of said thin film display member, said tail knob disposable on said border rim; and said middle portion therebetween in elastomeric tension for maintaining said film in substantially constant tension suspension on said carrier frame.
Claim 2
Dependent Claim 226 words
A changeable, multiple display comprising: a framework supporting structure for holding said multiple displays; a light source mounted on said framework supporting structure; an image bearing panel display member including means for diffusing light from said light source; panel mounting means for mounting said panel display member immediately adjacent said light source; a carrier frame having a transparent display face bounded by a border rim; hinge means for hingedly mounting said carrier frame to said framework immediately adjacent said image bearing panel display member on the side opposite from said light source; an image bearing thin film display member; and a plurality of constant tension fastening means for readily detachably mounting said thin film display member in constant tension suspension between said border rim and viewable through said display face, said plurality of fastening means each including, an elongated fastening member having an elastomeric middle portion, a tail knob at one end of said middle portion, and a head portion at the other end; each of said fastening members engageable in fastening position between said thin film display member and said carrier frame, with said head portion disposable on one side of said thin film display member, said tail knob disposable on said border rim; and said middle portion therebetween in elastomeric tension for maintaining said film in substantially constant tension suspension on said carrier frame.
Claim 3
Dependent Claim 45 words
A changeable, multiple display as claimed in claim 1, including a plurality of hanger bars for supporting changeable characters and pictorial display panels, including means for mounting each of said hanger bars on said carrier frame in vertical separation, horizontally extending across said display face.
Claim 4
Dependent Claim 24 words
A changeable, multiple display as claimed in claim 1, wherein said panel display member includes an initial background image viewable through said display face.
Claim 5
Dependent Claim 47 words
A changeable, multiple display as claimed in claim 3, wherein said thin film display member includes an image correlated to said initial background image so as to present a composite image when viewing said thin film display member overlying said panel display member through said display face.

References Cited (Backward Citations)

US1475977A Cited
US2189521A Cited
US2305426A Cited
US2306511A Cited
US2731749A Cited
US3460282A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-07-22 1978-01-21 1978-07-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-07-22 1982-01-21 1982-07-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-07-22 1986-01-21 1986-07-23 $7700.00 Window Closed / Lapsed

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