Patent US3888029A successfully refreshed from Google Patents.
US3888029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable multiple image display apparatus
Assignee: MININNESOTA MINING AND MANUFACTURING Co
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Filing: 1974-02-01
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Granted: 1975-06-10
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Expires: 1994-02-01
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
- 👤 Wilfried Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:06
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/0418; G09F13/045
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
212 words
A removable display film carrier for changeable copyboards comprising: a carrier frame having a display face bounded by side flanges extending from said carrier frame transversely to said display face and including means for removably attaching said carrier frame to said copyboard; said side flanges having mounting apertures therein; a thin, flexible film sheet bearing a display image and including a plurality of apertures along the perimeter thereof; and a plurality of tensioning members for suspendingly mounting said film sheet in substantially constant tension on said carrier frame with said display image viewable through said display face; each of said tensioning members including; an elongated, elastomeric middle portion, a tail knob at one end of said middle portion, said tail knob having a slightly larger cross sectional portion than said middle portion; a head knob at the other end of said middle portion, said head knob having a slightly larger cross sectional portion than said middle portion; each of said tensioning members engageable between respective mounting apertures in said side flanges and said film sheet perimeter with said tail knob engaging said side flange, said head knob engaging said film sheet, and said middle portion in elastic tension therebetween for suspending said film sheet in substantially constant tension between said side flanges.
Claim 2
Dependent Claim
212 words
A removable display film carrier for changeable copyboards comprising: a carrier frame having a display face bounded by side flanges extending from said carrier frame transversely to said display face and including means for removably attaching said carrier frame to said copyboard; said side flanges having mounting apertures therein; a thin, flexible film sheet bearing a display image and including a plurality of apertures along the perimeter thereof; and a plurality of tensioning members for suspendingly mounting said film sheet in substantially constant tension on said carrier frame with said display image viewable through said display face; each of said tensioning members including; an elongated, elastomeric middle portion, a tail knob at one end of said middle portion, said tail knob having a slightly larger cross sectional portion than said middle portion; a head knob at the other end of said middle portion, said head knob having a slightly larger cross sectional portion than said middle portion; each of said tensioning members engageable between respective mounting apertures in said side flanges and said film sheet perimeter with said tail knob engaging said side flange, said head knob engaging said film sheet, and said middle portion in elastic tension therebetween for suspending said film sheet in substantially constant tension between said side flanges.
Claim 3
Dependent Claim
33 words
A removable display film carrier as claimed in claim 1, including means for suspending said film sheet in spacial sEparation from said carrier frame display face to inhibit the collection of moisture therebetween.
Claim 4
Dependent Claim
48 words
A removable display film carrier as claimed in claim 1, wherein said film sheet is substantially rectangular, and including, corner reinforcement means at each corner of said film sheet, each of said tensioning members engageable with said film sheet and corner reinforcement means at respective film sheet corners.
Claim 5
Dependent Claim
66 words
A removable display film carrier as claimed in claim 1, wherein said side flanges include corner anchor portions intermediate respective adjacent ends of each of said side flanges, said corner anchor portions each including one of said mounting apertures, and wherein said tail knob of each of said tensioning members is engageable with a respective one of said corner anchor portions for suspending said film sheet.
Claim 6
Dependent Claim
26 words
A removable display film carrier as claimed in claim 1, including reinforcing means between said display face and said side flanges for reinforcing said carrier frame.
Claim 7
Dependent Claim
68 words
A removable display film carrier as claimed in claim 1, said side flanges angled transversely from said display face to define a border area around said display face; and wherein said mounting apertures on said side flanges are located such that said tensioning members extend between said angled side flanges and said film sheet substantially within said border area and are not directly viewable at said display face.
Claim 8
Dependent Claim
203 words
A display film carrier assembly for changeable copyboard framework structures comprising: a transparent carrier panel having a central display face; a border rim around the perimeter of said display face, including a mounting flange portion extending therefrom; channel frame means engageable with said mounting flange portion for mounting said carrier panel around the perimeter thereof; said channel frame means including a hinge for hingedly mounting said channel frame means to said copyboard framework structure; an image bearing display film; and means for detachably mounting said display film on said carrier panel immediately adjacent and viewable through said central display face, said means including, a plurality of elastomeric fastening members engageable between said display film and the perimeter of said border rim, each including, 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 display film and said carrier panel, with said head portion disposable on one side of said display film, 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 panel.
Claim 9
Dependent Claim
203 words
A display film carrier assembly for changeable copyboard framework structures comprising: a transparent carrier panel having a central display face; a border rim around the perimeter of said display face, including a mounting flange portion extending therefrom; channel frame means engageable with said mounting flange portion for mounting said carrier panel around the perimeter thereof; said channel frame means including a hinge for hingedly mounting said channel frame means to said copyboard framework structure; an image bearing display film; and means for detachably mounting said display film on said carrier panel immediately adjacent and viewable through said central display face, said means including, a plurality of elastomeric fastening members engageable between said display film and the perimeter of said border rim, each including, 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 display film and said carrier panel, with said head portion disposable on one side of said display film, 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 panel.
Claim 10
Dependent Claim
24 words
A display film carrier assembly as claimed in claim 7, wherein said border rim includes a reinforcing rim portion for reinforcing said carrier panel.
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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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |