Banner support arm lock
US5433408A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Oct 18, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7158
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An arm locking system for a vertical banner supporting column having horizontally disposed arms. The tubular column internally receives a nut having resilient fingers permitting unilateral installation of the nut adjacent an arm extending through holes formed in the column. A screw within the nut bears upon the arm forcing the arm against the edges of the associated column holes frictionally positioning the arm and column. A single nut and screw may be used to position a plurality of arms upon the arms being so related that the screw causes engagement of the arms portion's within the column to engage in a frictional relationship forcing the arms into contact with their associated hole edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.