US3783542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Map display system
Assignee: Atkins and Merrill Inc
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Filing: 1972-11-10
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Granted: 1974-01-08
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Expires: 1992-11-10
Abstract
Abstract This invention describes an improved type of map display system. It comprises a rectangular framework covered with a sheet of translucent material that is held rigidly in a plane, such that a sheet of photographic material can be adhered to the front surface of the display sheet. Means including a plurality of spaced vertical rails and adjustable horizontal rails attached thereto are provided for holding lamp fixtures which may be positioned on the horizontal rails so that a lamp house can be positioned at any point on the back surface of the display sheet. The lamp fixture is of improved design in that it comprises a system which can be moved vertically or horizontally, and has an arm which rotates about a horizontal axis perpendicular to the display sheet, and a lamp fixture that can be rotated about this arm, and holds a lamp house which can be rotated separately about its axis. The lamp house may include 1, 2 or 4 separate lamp bulbs which can be lighted one or more at a time. The lamp house may also include dividers between the lamps such that the light from one or two or four of the lamps can be directed to separate areas of the display sheet.
Inventors
- 👤 C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:32
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/10; G09B29/102; G09F; G09F13/00; G09F13/04; G09F13/0418; G09F13/045; G09F13/0454
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A map display system comprising: a a vertically disposed housing having a front display sheet of translucent material; b a plurality of transversely spaced vertical columns behind said sheet attached to said housing, a plurality of movable means on said columns to support said sheet; c a plurality of horizontal support rods, and means to movably clamp said rods to pairs of said columns; d a plurality of lamp systems each comprising: 1 a first part movably clamped to one of said support rods; 2 a second part comprising bent rod means rotatable at its first end in said first part; 3 a third part comprising lamp fixture means rotatably supported on the second end of said second part; 4 lamp house means rotatably supported in said lamp fixture, said lamp house in contact with the back surface of said sheet; 5 at least one lamp in said lamp house; and e eleCtric circuit means to power and control said lamps.
Claim 2
Dependent Claim
161 words
A map display system comprising: a a vertically disposed housing having a front display sheet of translucent material; b a plurality of transversely spaced vertical columns behind said sheet attached to said housing, a plurality of movable means on said columns to support said sheet; c a plurality of horizontal support rods, and means to movably clamp said rods to pairs of said columns; d a plurality of lamp systems each comprising: 1 a first part movably clamped to one of said support rods; 2 a second part comprising bent rod means rotatable at its first end in said first part; 3 a third part comprising lamp fixture means rotatably supported on the second end of said second part; 4 lamp house means rotatably supported in said lamp fixture, said lamp house in contact with the back surface of said sheet; 5 at least one lamp in said lamp house; and e eleCtric circuit means to power and control said lamps.
Claim 3
Dependent Claim
16 words
The display system as in claim 1 including a plurality of lamps in said lamp house.
Claim 4
Dependent Claim
13 words
The display system as in claim 2 including dividing walls between each lamp.
Claim 5
Dependent Claim
18 words
The display system as in claim 1 including colored filter means in connection with at least one lamp.
Claim 6
Dependent Claim
18 words
The display system as in claim 1 including opaque mask means between said lamp house and said sheet.
Claim 7
Dependent Claim
35 words
The display system as in claim 5 in which said mask means comprises a thin lid covering the front of said lamp house, at least one opening in said lid of selected size and shape.
Claim 8
Dependent Claim
47 words
The display system as in claim 1 in which said means to support said sheet comprise a plurality of short horizontal rods, movably clamped to said columns and extending forward to the back surface of said sheet, and means to removably attach said rods to said sheet.
Claim 9
Dependent Claim
144 words
In a display system including a housing, a plurality of spaced vertical columns in said housing, movable means attached to said columns to support said sheet, at least one horizontal support rod movable attached to said columns, the improvement in back lighting means for said display sheet comprising at least one lamp system, comprising: a a first part movably clamped to said support rod; b a second part comprising bent rod means rotatably clamped at its first end in said first part; c a third part comprising lamp fixture means rotatably clamped to said second part at its second end; d a fourth part comprising lamp house means rotatably clamped in said lamp fixture and adjustable in a longitudinal direction, so as to be placed in contact with the back surface of said sheet; and e at least one lamp in said lamp house.
Claim 10
Dependent Claim
144 words
In a display system including a housing, a plurality of spaced vertical columns in said housing, movable means attached to said columns to support said sheet, at least one horizontal support rod movable attached to said columns, the improvement in back lighting means for said display sheet comprising at least one lamp system, comprising: a a first part movably clamped to said support rod; b a second part comprising bent rod means rotatably clamped at its first end in said first part; c a third part comprising lamp fixture means rotatably clamped to said second part at its second end; d a fourth part comprising lamp house means rotatably clamped in said lamp fixture and adjustable in a longitudinal direction, so as to be placed in contact with the back surface of said sheet; and e at least one lamp in said lamp house.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |