Universal sign
US4280294A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1980 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2007/1847
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sign for universal mounting includes a display sheet and a frame surrounding said sheet, said frame being formed of a pair of U-shaped tubular members joined at the sides in butted relationship to provide joints at opposite sides of the sign. The sheet has rows of oppositely opening tabs or channel rails, etc. for receiving various panels with appropriate characters or numerals. The frame is apertured at top and bottom for securement thereto of channels which may be clamped to a post or vertical standard. The sides are similarly apertured for attachment of channels carrying pivot pins receivable by supports on opposite sides of the sign to pivotally mount the sign by said supports. A counterweight in the form of a channel is provided for securement by use of the aperture at the bottom of the sign for proper counterweighing of the sign when pivotally mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.