Poster clamp
US5390889A · kind A · utility
Inventor
Key dates
| Filing date | Dec 21, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A poster clamp having a clam-shell clamp having an upper member and a lower member, the upper and lower members rotatable about a common hinge between open and closed positions, and when in the closed position a first clamp arm on the upper member overlaying a first clamp arm on the lower members, and when in the closed position a second clamp arm on the upper member, coplanar with the first clamp arm on the upper member, overlaying a second clamp arm on the lower member, the second clamp arm on the lower member coplanar with the first clamp arm on the lower member, the second clamp arms extending substantially at right angles to the first clamp arms, the first and second clamp arms having longitudinal outside edges, the hinge along the longitudinal outside edges of the first clamp arms, whereby when in the closed position the first and second arms of the upper member are in substantially parallel engagement with the first and second arms of the lower member to thereby releasably frictionally engage a sheet placed between the upper and lower members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.