Erasable marker board assembly
US5176522A · kind A · utility
Inventor
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L1/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A display device upon which erasable indicia may be written comprises a rigid frame encompassing a planar marking surface and corners joining elements of the frame. The frame comprises an elongated top spaced apart from a parallel, elongated bottom, and a pair of spaced apart sides extending perpendicularly between the top and the bottom. The sides and top are formed from a single continuous piece of aluminum extrusion having a generally J-shaped cross section. A similar extrusion forming the bottom comprises an added outwardly extending tray. The planar marking surface is preferably fiberboard, spray coated with polyurethane. Crimps defined in the frame secure the board. Each upper corner of the device is reinforced by a resilient, snap fit hanging bracket which is offset from the back of the board to engage a fastener. A pair of L-shaped modular corners join the frame sides to the bottom. Each corner comprises a base, a front, and a rear wall extending upwardly from the base forming a channel, an offset snap fitting system, and an end wall. An outwardly projecting ledge concurrently mates with an end of the bottom and its tray. The channel receives an end of one side. Its walls a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.