Signals and indicators – Flags and flagstaffs
Patent
1981-03-05
1987-05-05
Haroian, Harry N.
Signals and indicators
Flags and flagstaffs
G09F 1700
Patent
active
046623051
ABSTRACT:
A collapsible signpost comprising three major subassemblies is disclosed. An elongate support shaft having a ground engaging stake for engaging the ground mounted at the lower end thereof forms the main body of the signpost. An extendable arm having a mast head for supporting a display at the upper end thereof is received within an opening in the upper end of the support shaft. The arm may be extended upward from the support shaft and clip pin is provided to hold the arm at any of several desired elevations. A weighted cylinder is mounted on the support shaft and is free to reciprocate between flanges located at both the lower end and the upper end of the support shaft. By driving the cylinder against the lower flange, the ground-engaging stake is driven into the ground and by driving the cylinder against the upper flange, the ground-engaging stake is removed from the ground. A clip is provided to insert through holes in both the support shaft and extendable arm in such a manner that both the extendable arm and the cylinder are prevented from moving during transportation. A detachable support assembly may be provided to aid in displaying signs which are relatively large or comprised of fabric.
REFERENCES:
patent: 504987 (1893-09-01), Marum
patent: 3138886 (1964-06-01), Cobb
patent: 3200786 (1965-08-01), Swezy
patent: 3381763 (1968-05-01), Matson
patent: 3519234 (1970-06-01), Matson
patent: 4249715 (1981-02-01), Repp
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